Key Stage 3 3, 2, 1, Go!


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Sports people must be fast,

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strong...

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..and deadly accurate.

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But did you know they wouldn't be able to compete without maths?

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Time-keeping...

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..scoring, speed...

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shape, distance.

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It's all mathematics.

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A tenth of a second or just a few millimetres

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can transform an ordinary person into a world champion.

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Great Britain get the gold!

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-This is...

-3, 2, 1...

-Go!

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We take teams to a secret location...

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This really IS a special place.

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This is fabulous!

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..to be given a behind-the-scenes tour...

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HE SCREAMS

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..and meet their sporting heroes...

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Hi, nice to meet you.

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..who'll give them a maths challenge.

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3, 2, 1, go!

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-Go!

-Go!

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And if they get it right...

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17!

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One, two, three, four...

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Probability suggests we should dive to the bottom right hand corner.

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..they win a gold medal.

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This challenge is all about football.

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Football is played on a rectangular grass pitch up to 120 metres long

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and 90 metres wide. Two teams of 11-a-side kick a round ball

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into a goal on the opposite team's half.

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On the pitch, only the goalkeeper can handle the ball,

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and only in the penalty area.

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The games last for 90 minutes and the team with the most goals wins.

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So, are you ready? 3, 2, 1, Go!

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Today, football fans Hayden and Romario are being taken

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to a secret location to complete their 3, 2, 1, Go! challenge.

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They have no idea where they're going.

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They've both been playing football since they could walk.

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I get so much enjoyment out of it.

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Yeah, and you can get away from all homework and stuff

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-and it's just a way of freedom, really.

-Yeah.

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Hayden gets to enjoy a lot of that freedom

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because he plays for the Potters Bar Crusaders.

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And with them, he has won the league.

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He's also played in the Arsenal soccer schools, which is good,

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because they're both die-hard supporters of one club.

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BOTH: Arsenal.

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I used to live sort of around that area, so it's sort of my home team.

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Romario plays for his local club, Barnet Azzurri,

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and has been on two successful tours with the team.

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He's also played AGAINST the Arsenal Academy,

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but they both hope to play FOR Arsenal one day.

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I like the way they play, really. The players are very skilful.

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They ARE extremely skilful.

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In fact, they're one of the most successful British clubs,

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winning 13 First Division and Premier League titles,

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two League Cups and no less than ten FA Cups.

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And it looks like the lads have just spotted where they're going.

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-Arsenal Training Centre.

-Arsenal Training Centre.

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Yes, that's right.

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-Amazing.

-Amazing. Absolutely great.

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This is where their favourite team Arsenal train.

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With ten full-size pitches, each to the exact specification of their home stadium,

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they come here to prepare for all their matches.

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Today the pitches are covered in snow, so they're training indoors.

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It's a top-secret location,

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and usually only the players are allowed in.

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Hi, guys, welcome to Arsenal Football Club. These are for you.

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If you'd like to follow me.

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But today, Romario and Hayden are going to be given special access.

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BOTH: Amazing.

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So who've you spotted, lads?

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Thierry Henry.

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Yep, there he is, playing keepy-uppy with Johan Djourou.

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-Sagna.

-Pires, Sagna.

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And there's Alex Oxlade-Chamberlain playing table tennis...?

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And one of the top players, Per Mertesacker, has taken a break

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to give them their 3, 2, 1, Go! maths challenge.

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-Hello.

-Hello, nice to meet you.

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And there's someone else with him, too.

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-And you?

-Romario.

-Do you play football?

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Yeah. Hello, Wenger!

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Um, that's Monsieur Wenger to you!

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After all, it is Arsene Wenger, the Arsenal manager. Best behaviour, boys.

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-Do you play football?

-Yeah.

-What position?

-Centre mid, up front.

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I play right back.

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I'm impressed.

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New talents...for our club, maybe?

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Per Mertesacker is a defender and, as well as playing for Arsenal,

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he's also played for his national team, Germany,

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where he's won 78 international caps.

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And it's rumoured that he was bought by Arsenal for £10 million.

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What's the best game you've played in?

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Oooh, I've played many games for the national team of Germany,

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and...we have some good games,

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but with Arsenal, every game is very massive.

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What's more fun and exciting - playing for Arsenal or Germany?

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The German league is good, obviously is very good,

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and I like to play there for a long, long time,

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but now I change my mind and England is much, much better.

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OK, enough idle banter, then. Time for their 3, 2, 1, Go! Challenge.

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OK, listen, here's your challenge.

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Our goalie Wojciech Szczesny always studies

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where strikers place the ball.

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Speak of the devil, there's Wojciech Szczesny himself!

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Anticipating where penalty might go is key to saving it.

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Watch where the strikers aims the penalties

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and predict where his next one will be.

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3, 2, 1, Go!

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So the boys have been given their prediction challenge.

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But first, an outside pitch has to be cleared of snow.

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Wow.

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I wish I could just jump in and play!

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Yeah. In an Arsenal shirt.

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Now, the boys are up against the 3, 2, 1, Go! striker,

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nicknamed White Boots because he, um, has...white boots.

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Some say he never misses the goal.

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Now, the boys have to watch White Boots take penalties,

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then predict which direction he will go when they face him

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for the final shot. You feeling lucky, boys?

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Right, we've got to work out what side he favours

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and plot them on the board. Let's get our pen. OK.

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Right, on the board is a diagram that represents the goal.

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It's divided into four quarters. The boys have to mark on the table

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which quarter White Boots aims each penalty,

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so they can work out his statistics afterwards.

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And there he goes with the first shot.

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And White Boots puts it straight in!

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-First one right.

-Yeah, right in the corner.

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So, they've marked it on the board.

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-Let's see where the next one goes.

-Yep.

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-Bottom left, yeah?

-Yeah.

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Now, I know White Boots is a deadly shot,

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but this keeper doesn't seem to be trying very hard.

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-Bottom right.

-Yeah.

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Predicting where a striker is likely to place a ball

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will give an added advantage to any keeper.

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-Bottom right again.

-About there?

-Yeah.

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And to know that, they must study a striker's form.

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That's bottom left that time.

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Oh, White Boots, off the bar but behind the line.

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-That one had a bit of a bounce there.

-Yeah.

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Like a penalty. Top left, little bit more middle. Yeah, about there.

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About there, yeah.

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And deadly White Boots is racking up the goals,

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he's giving the boys plenty to think about.

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-Bottom right again.

-Up there.

-Yeah. He favours bottom right.

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Bottom right-hand corner, yeah.

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Statistics are incredibly important to sport teams.

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It helps them to know how good their players are

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and also to size up their competitors.

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-Bottom right again. About there, maybe?

-Yeah, yeah.

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Right, White Boots has finished his run of penalties. What's next, lads?

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Now we need to add up each quarter and see how many there is.

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One, two, three, four, five, six, seven, eight, nine.

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Nine for this one.

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There's just one in this one.

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This one's got four. One, two, three, four.

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And the last one's got one, two, three, four, five, six.

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-So add them all up.

-That's 10... 14 plus 6 is 20.

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They've got the number of shots aimed at each quarter of the goal.

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So we've got 20 shots, so we need to work out the percentage out of 100.

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Exactly. To work out what percentage of the total goals

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went into each quarter of the goal, they need to work out

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what percentage of the total each individual goal is worth.

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So that would be 100 divided by 20.

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-Which equals...

-Five.

-Five.

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So that equals one single shot.

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That's right. For 20 shots, each one is 5% of the total.

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So what percentage of the total went into each quarter?

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So that means each one equals 5. So 9 x 5...

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That equals 45% for this quadrant.

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This one's just got 1, so that will be 1 x 5, which is 5%.

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This one down here has 4, which will be 5 x 4, which is 20. 20%.

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And the last one up here's got 6. 6 x 5 equals 30,

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so that means 30%.

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So the right-hand corner was the one with the most percentage of him shooting.

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That's right.

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45% of White Boots' shots went to the bottom right-hand corner.

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So now it's time to face him yourselves. What's your plan?

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-It's most likely...

-Most likely to be the bottom right-hand corner,

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as the probability is 45%.

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-He could go here, as that's second highest.

-Yeah, second highest.

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All the others are less.

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So probability suggests that if we were to save this next shot,

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we should dive to the bottom right corner. So who's going to do this?

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I'll go and try and save it.

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So, crunch time.

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Did the boys study the striker's previous form well enough?

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They nearly went for the top left, because it had a pretty high percentage of goals,

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but they decided to go with bottom right.

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Can this prediction mean Romario can get behind the ball by diving to his left?

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White Boots looks determined to remain unbeaten.

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Here he comes. It's got power.

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Romario commits to the dive...

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White Boots goes bottom right...

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-and Romario's got it!

-Yes, he saved it!

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White Boots, you are SO predictable!

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Bottom right looks favoured.

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Romario and Hayden stepped up to the challenge.

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They recorded the direction of White Boots' penalties

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and worked out his shooting statistics.

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They made their prediction based on the facts,

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before facing White Boots' final shot.

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And they came home heroes. What was your prediction again, boys?

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BOTH: Bottom right.

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They have completed their 3, 2, 1, Go! challenge,

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and Arsenal player Per Mertesacker has got their prizes.

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-First.

-Thank you.

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Thank you.

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-Hayden...

-Thank you.

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-Well done.

-Thank you.

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-How was that, boys?

-That was brilliant!

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Meeting Per, that's amazing, and seeing all the Arsenal players.

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Yeah, speaking to them in person, as well.

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Brilliant, once-in-a-lifetime opportunity.

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And what about the big boss, Arsene Wenger?

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Should have asked him for a trial!

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Now your teacher has a challenge for you.

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3, 2, 1, Go!

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Sports people must be fast,

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strong...

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..and deadly accurate.

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But did you know they wouldn't be able to compete without maths?

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Time-keeping...

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..scoring,

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speed...

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shape, distance.

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It's all mathematics.

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A tenth of a second or just a few millimetres

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can transform an ordinary person into a world champion.

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Great Britain get the gold!

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-This is...

-3, 2, 1...

-Go!

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We take teams to a secret location...

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This really is a special place.

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This is fabulous.

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..to be given a behind-the-scenes tour...

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..and meet their sporting heroes..

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Hi, nice to meet you.

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..who'll give them a maths challenge.

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3, 2, 1, Go!

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-Go!

-Go!

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And if they get it right...

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17!

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One, two, three, four...

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Probability suggests we should dive to the bottom-right corner.

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..they win a gold medal.

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This challenge is all about cycling.

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Track cycling takes place in specially-built velodromes,

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made up of two 180-degree circular bends connected by two straights.

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Cyclists race at speeds of up to 80 kilometres per hour

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on specially designed bikes with no brakes. So are you ready?

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3, 2, 1, go!

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Today's cycling fans, Dale and Jermaine, are being taken to a secret location

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in Manchester to complete their 3, 2, 1, Go! challenge.

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Dale likes nothing more than going out into the countryside on his BMX.

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I do jumps with my mates, go across the mud parts and get wet. Muddy.

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Dale is mad about cycling.

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He's been riding a bike for over ten years,

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and hasn't looked back since discovering BMXing,

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but loves watching the track cycling on TV.

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Although the lads don't know where they're going yet, they're already having a laugh.

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Jermaine is a sports star in the making.

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As a competitive swimmer and cyclist,

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he's training for a triathlon.

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He's also been cycling for ten years

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and likes watching the swimming and cycling on TV.

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So, as budding sportsmen, is there anywhere you've ever dreamt of going?

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The one place I would like to go in Manchester cycling is a velodrome, because I've never been before.

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Well, lads, this is your lucky day.

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You've seen where we're headed?

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-Professional cycling.

-Yep, you've got it.

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This is the National Cycling Centre in Manchester and it was Britain's first indoor Olympic cycling track.

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A cycle arena is called a velodrome.

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And this one is where members of the Great Britain Olympic team are training.

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This is where the boys will be given their 3, 2, 1, Go! challenge.

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Hi Jermaine, Dale, welcome to the National Cycling Centre.

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Do you want to come this way?

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The boys are going to be given a special tour of the velodrome.

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You've seen some of the bikes we've got here. These are the bikes that we use on the velodrome now.

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And they're just about to see the track for the first time.

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-OK, guys, this is the track.

-Wow!

-Pretty impressive, yeah?

-Yeah.

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And today Team GB are training with their coach...on a motorbike.

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Have a closer look.

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-It's a big place though, innit?

-It's really big, yeah.

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And you're about to get the track all to yourselves.

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It's your chance to take a spin while Team GB take a break in their training.

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Do you think you'd be able to get round the banking here?

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-No, I reckon I'll slip.

-I don't blame you for being a bit worried, Dale!

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You see the way the track is? As you come into the banking here,

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the steepest part goes to 42 and a half degrees.

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What you need to do when you're starting out is just pedal faster.

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-Yeah, yeah.

-Yeah? So I reckon you would be able to ride on here.

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It'd be hard, but I'll have a go, yeah.

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Right then, better get to the bike store to get fitted up.

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Come and have a look.

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This is the biggest fleet of track bikes in the UK,

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and each bike is designed just for track cycling.

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With just one gear and an aerodynamic frame,

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these bikes are built for speed.

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-How fast will they go?

-How fast will they go?

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They actually go as fast as the person who's pedalling them.

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OK, and they can get them up to around 62k.

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Our squad riders can go a lot faster.

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Yep, I think that's fired the boys up. Let's get you on the track.

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First thing you need to both know is you have no brakes on your bikes.

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OK, no brakes! Well it's too late to chicken out. You're on your own and it's time for the warm up.

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Go on, Jermaine. Go fast. Don't be scared.

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If you fall off, you fall off!

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HE LAUGHS

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If you die, you die!

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Those are, erm, interesting words of encouragement from Dale,

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but it doesn't seem to have put Jermaine off.

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Just get a feel of the bike.

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-Dale, are you ready?

-Yeah.

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Off you go, Dale.

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They're both picking up speed - total naturals.

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I think they're ready for a time trial. Jermaine is off first.

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3, 2, 1, go!

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Fast as you can!

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And he's looking fast!

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Next up, the clock starts for Dale.

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3, 2, 1, go!

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The boys are whizzing round.

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Jermaine has hit his home straight and is about to cross the line.

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Fast as you can. All the way to the line, keep going.

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Don't forget to keep pedalling! Keep pedalling.

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30.06.

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That's a good time for Jermaine, but Dale is flying round the track.

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It doesn't look like he's having any problems with the banking.

0:20:020:20:05

All the way, Dale, all the way.

0:20:050:20:07

26.22.

0:20:080:20:10

Amazing times.

0:20:100:20:12

-Well done, Dale. How did you find that?

-Easy.

0:20:130:20:16

Easy? You did it in 26.22 seconds. Well done.

0:20:160:20:20

DALE BREATHES HEAVILY

0:20:200:20:22

-You out of breath?

-Yeah.

0:20:220:20:23

That's a great job, lads.

0:20:260:20:27

You've managed some super-fast times on the very track our elite cyclists train and race on,

0:20:270:20:32

and today a world champion has taken a break in her training

0:20:320:20:36

to give the guys their 3, 2, 1, Go! challenge.

0:20:360:20:40

-Hi guys, my name's Sarah. What's your name?

-Dale.

0:20:400:20:42

-Hi, Dale.

-I'm Jermaine.

-Hi, Jermaine, how are you?

-Fine.

0:20:420:20:45

-Have you had a good day at the velodrome?

-Yeah.

0:20:450:20:48

Sarah Storey is world champion in paracycling.

0:20:480:20:52

She has competed at no less than five Paralympic Games,

0:20:520:20:55

where she's won 18 medals

0:20:550:20:58

and she has an incredible 71 world records!

0:20:580:21:01

And it was at the Manchester velodrome where Sarah learned to ride a track bike.

0:21:030:21:08

-How did you find it on the velodrome?

-We did a time trial.

0:21:090:21:13

-You did?

-Yeah.

-Over one lap?

-Yeah.

-250 metres. Do you know what time you did?

0:21:130:21:17

-26 point-something seconds.

-Pretty quick.

-30.6.

-That's all right.

0:21:170:21:20

How did you find it?

0:21:200:21:21

-Was it quite hard getting the gear going from standing?

-Yeah.

-Yeah...

0:21:210:21:24

I found it harder from there.

0:21:240:21:26

Yeah, getting onto the track and staying on the track and the bank,

0:21:260:21:29

-it's not as easy as it looks, is it?

-No.

0:21:290:21:31

What was the year that you won your first gold medal?

0:21:310:21:35

I won my first gold medal in 1992 when I was 14,

0:21:350:21:37

and that was in Barcelona at the 1992 Paralympic Games.

0:21:370:21:43

Amazing! 14 years old! That's just one year older than the boys.

0:21:430:21:47

But now they have a chance to win their very own medals.

0:21:470:21:50

Sarah has got Dale and Jermaine's 3, 2, 1, Go! challenge.

0:21:500:21:54

Listen up, boys.

0:21:540:21:55

I race 12 laps of the velodrome, that's in the individual pursuit,

0:21:560:22:00

but I can pick my position on the track.

0:22:000:22:02

Calculate how much further I would travel if I rode it on the red line

0:22:020:22:07

rather than on the black line during my race.

0:22:070:22:09

OK? 3, 2, 1, go!

0:22:090:22:12

So Dale and Jermaine have been given a measuring and arithmetic challenge.

0:22:120:22:17

Right, so we've got to measure the black and red line down there, let's go.

0:22:170:22:21

The track is oval-shaped, which means the inside edge is shorter than the outside one.

0:22:240:22:30

So it makes sense for the riders to stick to the inside edge on the track.

0:22:300:22:34

That's the black line.

0:22:340:22:37

But there are times when they might need to move up the track

0:22:370:22:39

like if they need to overtake someone in front of them.

0:22:390:22:42

This would take them to the next line up the bank, the red line.

0:22:420:22:46

Although this allows the rider to get a better position in the race,

0:22:460:22:50

it means that they will have to cycle a longer distance.

0:22:500:22:53

But how much further would the cyclist travel

0:22:530:22:55

if they spent the whole race on the red line rather than the black?

0:22:550:22:59

So, first up to work this out they need to measure both the black and red lines

0:22:590:23:05

that are marked out on the track, then do the sums.

0:23:050:23:08

Before they start, we thought it might be a good idea to clear the track of riders!

0:23:080:23:15

One, two, three...

0:23:150:23:17

Being able to understand distance is really important in cycling,

0:23:170:23:21

as every race is defined by the maximum distance the cyclist will travel.

0:23:210:23:25

Keep going, all the way round!

0:23:310:23:33

..248, 249, 250.

0:23:330:23:36

-Let's swap.

-Anyone else apart from me spotted a clue on the track?

0:23:360:23:42

Right that's the black line done, next it's the red.

0:23:420:23:46

Three, four...

0:23:460:23:48

253, 254, 255.

0:23:530:23:57

255. I'll go and write it down.

0:23:570:24:00

Good work, lads.

0:24:000:24:02

Hurry up!

0:24:020:24:04

Time for the sums.

0:24:040:24:06

-So what was the...

-Black line distance, that's 250 metres.

0:24:060:24:10

And the red line was 255.

0:24:120:24:15

The difference must be five metres.

0:24:190:24:21

Spot on, you've found the difference in length between the two lines.

0:24:210:24:26

Now to work out what a five-metre difference means over a 12-lap race.

0:24:260:24:30

-You've got to do it 12 x 5.

-Yep, that's the sum.

0:24:330:24:38

Being able to multiply and divide numbers

0:24:380:24:41

helps cyclists work out how many laps they have to cycle in any given race.

0:24:410:24:46

Anyhow, back to the sum, 12 x 5.

0:24:460:24:50

That means she's got to travel 60 metres more if she goes on the red line.

0:24:500:24:54

Spot on!

0:24:540:24:57

Right, done.

0:24:570:24:58

Good work. 60 metres is a huge amount over a race.

0:24:580:25:03

It's nearly a quarter of a lap.

0:25:030:25:04

Sticking to the red line would add critical seconds onto Sarah's time,

0:25:040:25:09

and could mean the difference between winning and losing.

0:25:090:25:13

It's definitely worth sticking on the black.

0:25:130:25:16

They did a top job measuring those lines,

0:25:160:25:19

and calculating the difference between the lengths in record time.

0:25:190:25:24

-And that difference again?

-BOTH: 60 metres.

0:25:240:25:28

The lads have completed their 3, 2, 1, Go! challenge,

0:25:300:25:33

and cyclist Sarah Storey has their prizes.

0:25:330:25:36

Congrats, guys, that was really, really good.

0:25:360:25:39

I had absolutely no idea that I would go so much further in a race if I rode so far up the track.

0:25:390:25:44

I'd like to give you a certificate,

0:25:440:25:46

and also, hopefully this will be the first of many gold medals to come in your careers.

0:25:460:25:52

Hang it somewhere proud, so you remember your day here at the velodrome.

0:25:520:25:56

-So congratulations.

-Thanks.

0:25:560:25:59

OK, now your teacher has got a challenge for you. 3, 2, 1, Go!

0:26:010:26:06

Sports people must be fast,

0:26:100:26:13

strong,

0:26:130:26:15

and deadly accurate.

0:26:150:26:17

But did you know they wouldn't be able to compete without maths?

0:26:190:26:24

Time keeping...

0:26:240:26:27

scoring...

0:26:270:26:30

speed...

0:26:300:26:31

shape...distance.

0:26:310:26:34

It's all mathematics.

0:26:340:26:36

A tenth of a second or just a few millimetres

0:26:360:26:40

can transform an ordinary person into a world champion.

0:26:400:26:45

COMMENTATOR: Great Britain get the gold!

0:26:450:26:48

-This is...

-3, 2, 1.

-Go.

0:26:480:26:51

-We take teams to a secret location.

-This really is a special place!

0:26:510:26:55

This is fabulous.

0:26:580:26:59

To be given a behind-the-scenes tour...

0:26:590:27:02

..and meet their sporting heroes...

0:27:040:27:07

Hi, Jack, nice to meet you.

0:27:070:27:10

..who'll give them a maths challenge.

0:27:100:27:12

3, 2, 1, go!

0:27:120:27:16

-Go!

-Go!

0:27:160:27:18

And if they get it right...

0:27:180:27:21

17!

0:27:210:27:22

One, two, three, four...

0:27:230:27:27

Probability suggests you should dive to the bottom right hand corner.

0:27:270:27:31

..they win a gold medal.

0:27:310:27:33

This challenge is all about gymnastics.

0:27:350:27:38

Gymnastics is a sport that involves the performance of exercises,

0:27:410:27:46

demonstrating strength, agility, and balance.

0:27:460:27:49

Floor exercises take place on a mat measuring 12 metres by 12 metres.

0:27:490:27:55

A performance must contain forward, backwards and sideways acrobatic elements, and a balance move.

0:27:550:28:01

It must not exceed 70 seconds. And they must not step outside the lines.

0:28:010:28:06

So, are you ready?

0:28:060:28:08

3, 2, 1, Go!

0:28:080:28:10

Today, twins Heather and Beth are being taken to a secret location near Heathrow Airport

0:28:120:28:19

to complete their 3, 2, 1, Go! challenge.

0:28:190:28:22

They're really into gymnastics and know all about the ins and outs of the sport.

0:28:220:28:27

There's a lot of elements to gymnastics.

0:28:270:28:29

You've got, like, the trapeze, and you've got the balance beam.

0:28:290:28:33

Heather loves to watch the gymnasts on the balance beam and bars,

0:28:330:28:37

and is learning gymnastics herself at school.

0:28:370:28:40

She really enjoys practising on the trampoline

0:28:400:28:43

and her favourite move is the straddle jump.

0:28:430:28:47

Heather's twin sister Beth loves the accuracy of gymnastics.

0:28:470:28:50

You've got to be perfect, because if you do just one little thing wrong, you can lose a lot of points.

0:28:500:28:55

Beth's favourite discipline to watch is rhythmic gymnastics with ribbons,

0:28:560:29:01

but at school she really enjoys practising on the balance beam,

0:29:010:29:05

and she has won sports day twice.

0:29:050:29:08

The girls are so sports mad, they've been picked to be Olympic ambassadors at their school.

0:29:090:29:14

We've always been involved in sport within our school.

0:29:140:29:18

We're not necessarily the best,

0:29:180:29:20

but they chose people enthusiastic about the Olympics wanting to do it.

0:29:200:29:23

I'd have thought they'd have guessed where they're going by now.

0:29:230:29:26

It's the Heathrow Gymnastics Club.

0:29:260:29:29

Wow.

0:29:300:29:31

Wow, indeed!

0:29:310:29:34

The Heathrow Gymnastics Club is the UK's only official Olympic association training gymnasium.

0:29:340:29:39

It's the largest gymnastics facility in England,

0:29:390:29:42

and is the most successful British club across all disciplines.

0:29:420:29:46

And this is where they're going to be given their 3, 2, 1, Go! challenge.

0:29:460:29:50

That'll be good!

0:29:500:29:51

For any gymnastics enthusiast, this is a real treat.

0:29:530:29:56

You guys done any gymnastics before?

0:29:580:30:00

We've done trampolining at school.

0:30:000:30:02

This is where elite British gymnasts come to train.

0:30:020:30:08

Wow, it's massive.

0:30:080:30:10

It certainly is! Even though they've come for a maths challenge,

0:30:100:30:13

the girls can't pass up a chance to train where some of the British Olympic team practise their stuff.

0:30:130:30:18

First things first, warm up.

0:30:180:30:21

Now, come on, girls - reach!

0:30:230:30:25

Can't stretch that far!

0:30:250:30:27

Now time for the bars. Chalk up.

0:30:270:30:31

SHE LAUGHS

0:30:350:30:37

And that's not bad at all, girls.

0:30:370:30:39

-Thank you.

-That's all right.

0:30:390:30:41

Now time for Heather's favourite, the trampolines.

0:30:410:30:45

Now, I'm afraid it's time to jump off

0:30:560:30:58

and get ready for your maths challenge.

0:30:580:31:01

And one of the British Olympic gymnastics team

0:31:010:31:03

has taken a break in training to meet Beth and Heather

0:31:030:31:07

and give them their challenge.

0:31:070:31:09

-I'm Beth.

-Hi, Beth.

-I'm Heather.

-Hi, Heather.

0:31:090:31:11

Here's hoping he can tell them apart.

0:31:110:31:13

Daniel Purvis became the world number one

0:31:140:31:17

men's artistic gymnast in 2011.

0:31:170:31:20

He's been the British all-round gymnastics champion twice.

0:31:300:31:34

He won gold in the World Cup,

0:31:340:31:36

and also got gold in the 2012 Test Event.

0:31:360:31:39

What's your favourite sports then?

0:31:420:31:44

Gymnastics and the diving and swimming,

0:31:440:31:46

-I think they're the most precise ones.

-All right, cool, good answer!

0:31:460:31:50

OK, girls, we're going to have to crack on. Time for the challenge.

0:31:500:31:54

My routines are full of somersaults and flips and spins.

0:31:540:31:57

Can you work out where I'd be at different degrees of rotation?

0:31:570:32:00

Three, two, one, go!

0:32:000:32:02

So Beth and Heather have been given a rotation measuring challenge.

0:32:040:32:08

I think you have to draw these angles.

0:32:080:32:11

Angles that Daniel was at, at different points in his flips.

0:32:110:32:16

Yep, you've got it.

0:32:160:32:18

Heather and Beth have been given a list

0:32:180:32:20

of three different degrees of rotation

0:32:200:32:22

that Daniel's body will pass through in a 360 spin.

0:32:220:32:25

Their job is to measure them out, and mark them on the board,

0:32:250:32:29

using a protractor and a few pictures of Daniel.

0:32:290:32:32

We've already put the first one down, to get the girls going.

0:32:320:32:35

Daniel at 45 degrees in his spin.

0:32:350:32:39

So now for the next one, 162 degrees.

0:32:390:32:41

OK, so we need to get a picture of Daniel,

0:32:410:32:43

and if you get the protractor and the pens.

0:32:430:32:47

-OK, so if you measure 162 degrees.

-OK.

0:32:470:32:50

That's good measuring, girls.

0:33:010:33:03

Shall we go from here?

0:33:070:33:10

And just draw through the middle.

0:33:100:33:12

There's the first one done.

0:33:120:33:13

Perfect!

0:33:130:33:15

Understanding rotation is really important for gymnasts

0:33:150:33:18

when they are learning and perfecting spins and somersaults.

0:33:180:33:21

They should know roughly whereabouts their body should be

0:33:210:33:24

at these different degrees of rotations.

0:33:240:33:26

So the second one is 239.

0:33:260:33:28

That's right, girls. This one is a little tricky, though,

0:33:280:33:31

because the protractor finishes at 180 degrees.

0:33:310:33:34

But there's a way round it.

0:33:340:33:36

First, find the difference between 239 and 180.

0:33:360:33:41

-Take away 180 from 239.

-Which is 59 degrees.

0:33:410:33:45

Then reposition the protractor, so that it starts at 180,

0:33:450:33:49

and mark from there the difference you calculated.

0:33:490:33:52

We need to measure 59 degrees off the protractor.

0:33:520:33:56

And there it is.

0:33:590:34:01

-180 plus 59?

-239.

0:34:010:34:05

Try and stick this here, and draw the line through.

0:34:050:34:11

Perfect.

0:34:110:34:12

It's incredible to think Daniel's body goes through all of these degrees.

0:34:120:34:16

Which one next?

0:34:160:34:17

And the last angle is 324 degrees.

0:34:170:34:20

This time, they need to find the difference between 324 and 180.

0:34:200:34:25

That way, they can figure out where to mark the board,

0:34:250:34:28

while holding the protractor in the new position.

0:34:280:34:30

-324 minus 180 degrees is...

-144.

0:34:300:34:36

Oh, they're good! So round to 144 on the protractor.

0:34:360:34:39

I'll just draw a straight line from the centre through.

0:34:390:34:43

That's 324 degrees there from zero.

0:34:430:34:48

That's right. 180 plus 144 makes 324.

0:34:480:34:53

OK, get the last picture of Daniel.

0:34:530:34:55

And we need to draw a straight line through.

0:34:590:35:01

Amazing work. That was a tricky challenge

0:35:040:35:07

and you completed it in record time.

0:35:070:35:10

You managed to use the protractor to find specific degrees of rotation,

0:35:100:35:14

and mark them up on the board.

0:35:140:35:16

You also expertly used subtraction to mark up those bigger numbers.

0:35:160:35:20

So take us through those degrees of rotation, girls.

0:35:200:35:24

-162 degrees.

-239 degrees.

-And 324 degrees.

0:35:240:35:30

Beth and Heather have completed their 3, 2, 1, Go! challenge

0:35:330:35:37

and it's time for their reward.

0:35:370:35:38

Great job today, girls, well done.

0:35:380:35:40

Here's your medals, congratulations again.

0:35:400:35:43

-Thank you.

-Congratulations.

-Thank you.

0:35:430:35:46

Well done, great job.

0:35:470:35:49

Now your teacher has a challenge for you. 3, 2, 1, go!

0:35:530:35:56

Sports people must be fast...

0:36:000:36:03

strong...

0:36:030:36:05

and deadly accurate.

0:36:050:36:07

But did you know they wouldn't be able to compete without maths?

0:36:110:36:14

Time keeping...

0:36:140:36:16

scoring...

0:36:170:36:19

speed...

0:36:190:36:21

shape...

0:36:210:36:23

distance. It's all mathematics.

0:36:230:36:26

A tenth of a second or just a few millimetres

0:36:260:36:30

can transform an ordinary person into a world champion.

0:36:300:36:34

Great Britain get the gold!

0:36:350:36:36

This is...

0:36:360:36:39

-3, 2, 1.

-GO!

0:36:390:36:40

We take teams to a secret location.

0:36:400:36:43

This really is a special place.

0:36:430:36:45

This is fabulous.

0:36:480:36:50

To be given a behind the scenes tour...

0:36:500:36:52

THEY SCREAM AND LAUGH

0:36:520:36:54

..and meet their sporting heroes.

0:36:540:36:57

Hi, Jack, nice to meet you.

0:36:570:36:58

..who'll give them a maths challenge.

0:37:000:37:02

3, 2, 1, go!

0:37:020:37:06

-Go!

-Go!

0:37:060:37:08

And if they get it right...

0:37:080:37:11

17!

0:37:110:37:13

1, 2, 3, 4.

0:37:130:37:17

Probability suggests we should dive to the bottom hand right corner.

0:37:170:37:21

..they win a gold medal.

0:37:210:37:24

This challenge is all about rowing.

0:37:240:37:27

All Olympic rowing races are 2,000 metres long with six lanes.

0:37:310:37:37

The boat, or shells, can have one, two, four or eight rowers in them,

0:37:370:37:43

and some have a cox to steer them.

0:37:430:37:46

The rowers have either one or two oars each.

0:37:460:37:50

They paddle together in a straight line,

0:37:500:37:52

and the first to cross the finish line wins.

0:37:520:37:56

So are you ready? 3, 2, 1, Go!

0:37:560:37:58

Today, rowing fans Emma and Alanna are being taken to a secret location

0:38:010:38:06

near the town of Maidenhead.

0:38:060:38:08

They have no idea where they're going.

0:38:080:38:10

Where are we going?

0:38:100:38:13

There's a forest.

0:38:140:38:17

They've both just started to learn to row.

0:38:170:38:19

We started this school year.

0:38:190:38:21

Rowing, not many people do, so it's a good skill for when you get older.

0:38:210:38:25

They're not the best boats. The seats come off sometimes.

0:38:250:38:29

Alanna has been learning to row at their school club.

0:38:340:38:38

At school, she has won 42 sports medals,

0:38:380:38:41

and because of her sporting achievements

0:38:410:38:43

has been training at the Great Britain pentathlon camp.

0:38:430:38:47

I like being on the water. So I like sailing, as well.

0:38:470:38:52

Emma has also been learning to row at their school rowing club.

0:38:520:38:56

She likes being out on the water so much,

0:38:560:38:59

that she's also a qualified kayaker

0:38:590:39:01

and a Level 3 Royal Yachting Association sailor.

0:39:010:39:03

They do quite a few sports, actually.

0:39:030:39:06

We do lacrosse, rowing, netball.

0:39:060:39:10

-Swimming.

-Rugby.

-I used to do rugby.

0:39:100:39:12

-Hockey, as well.

-Pentathlon.

-Rounders.

-Surfing.

0:39:120:39:15

-Tennis.

-Gymnastics. I've done, like, everything.

0:39:150:39:19

I like discus, as well.

0:39:190:39:20

Phew! Well, they'll fit right in where they're going,

0:39:200:39:23

because it's home to a huge variety of athletes.

0:39:230:39:26

Bisham Abbey National Sports Centre, right on the River Thames,

0:39:260:39:29

houses the UK's most elite athletes.

0:39:290:39:33

All of the British athletes that won gold in the Beijing Olympics

0:39:330:39:37

came through here, and it's where the GB Olympic rowing squads train.

0:39:370:39:41

But it's not just them.

0:39:410:39:43

Over 100 different British Olympic and Paralympic athletes

0:39:430:39:47

are training here, too,

0:39:470:39:48

from hockey to synchronised swimming.

0:39:480:39:50

It's usually only the highest level sports people who are allowed in,

0:39:500:39:55

but today, Alanna and Emma are going to be given special access.

0:39:550:39:59

Hi, Alanna, hi, Emma, I'm Richard.

0:40:000:40:03

Welcome to the English Institute of Sport at Bisham Abbey.

0:40:030:40:06

Come in, I'll show you around.

0:40:060:40:07

You're normally only allowed in this gym

0:40:090:40:11

if you're in the top 15 in the world.

0:40:110:40:13

Now that's exclusive!

0:40:130:40:15

This is where the hard training happens.

0:40:150:40:17

This is where the gold medals are earned.

0:40:170:40:20

To earn those medals, the athletes train every day,

0:40:200:40:24

lifting enormous weights to build their strength.

0:40:240:40:27

The basic theory is we want to make sure that the rowers get stronger.

0:40:270:40:30

And the stronger we can make the rowers, the faster they make the boat go.

0:40:300:40:35

So this is one of the exercises rowers would do.

0:40:350:40:37

This is really important to improve your back strength

0:40:370:40:41

and making sure you can pull the oar through as strong as you possibly can, OK?

0:40:410:40:46

I want you to pull up, so the chest hits the bar.

0:40:460:40:49

That's it - perfect. See if you can do another one.

0:40:490:40:52

Good work, Alanna, you'll be on the team in no time.

0:40:520:40:56

Pull up till your chest hits the bar, that's it.

0:40:560:40:58

So you can be working your back.

0:40:580:41:00

Good, excellent.

0:41:010:41:03

As well as all that weight lifting,

0:41:030:41:05

the rowing team also has to train on the ergonomic rowing machines.

0:41:050:41:10

And today the men's and women's Olympic teams are in a session,

0:41:100:41:13

so the girls get to train with the best.

0:41:130:41:15

All the rowers use the ergos every single day.

0:41:150:41:18

We can see what is their maximum power,

0:41:180:41:20

especially when you're looking at a race of 2,000 metres,

0:41:200:41:24

and measuring how quickly they can do it.

0:41:240:41:26

Dig deep, girls!

0:41:260:41:28

But, of course, the real rowing doesn't happen on dry land.

0:41:300:41:34

Just outside the training centre is the River Thames,

0:41:340:41:37

where the rowing teams get out on the water,

0:41:370:41:39

and put all of that training into practice.

0:41:390:41:42

They're pulling in quite well.

0:41:420:41:44

Their boat's nicer than ours!

0:41:440:41:46

Getting ready - go!

0:41:480:41:49

Today, one of the British Olympic rowing team

0:41:510:41:53

has taken a break in her training to give them their challenge.

0:41:530:41:58

-Hello.

-BOTH: Hi.

-I'm Anna. Nice to meet you.

0:41:580:42:00

-What's your names?

-I'm Emma.

-I'm Alanna.

0:42:000:42:03

Anna Watkins competes in the women's double scull.

0:42:040:42:07

With that event, she has won the world championship,

0:42:070:42:13

and also come first in the World Cup.

0:42:130:42:17

And at the Beijing Olympics, she took home a bronze medal.

0:42:170:42:20

You two are rowers, as well, is that right?

0:42:210:42:24

-Yeah.

-And whereabouts do you row?

-In Reading, with our school.

0:42:240:42:29

Oh, wow! I wish I'd been able to do rowing at school.

0:42:290:42:32

It wasn't at my school, I had to wait till I was older.

0:42:320:42:34

-What's your favourite bit about rowing?

-Being on water.

-Yeah.

0:42:340:42:40

When you get it right there's nothing like it, is there,

0:42:400:42:42

when you think, "Yeah, I did that," and you can't ever do it quite the same, can you?

0:42:420:42:46

Yeah. Was it scary going to Beijing and rowing in the Olympics?

0:42:460:42:50

Um, yeah, it was scary,

0:42:500:42:52

because you knew that everybody was watching you on the telly,

0:42:520:42:56

and you're in a really weird place. Like, China's obviously very

0:42:560:43:00

different from England and the food was different,

0:43:000:43:03

and lots of unexpected things happened,

0:43:030:43:05

like, there were helicopters flying over during the racing,

0:43:050:43:07

and we had to get used to it all.

0:43:070:43:10

Right, enough of the chat, time for their challenge.

0:43:100:43:14

In our training, we need to measure if we are improving.

0:43:140:43:16

A good indication is to look at our stroke rate -

0:43:160:43:19

a measure of how many times the team pull the oars in a minute.

0:43:190:43:22

Measure the rower's stroke rate over three straights

0:43:220:43:25

and plot them on a graph.

0:43:250:43:26

Also, plot a line of the average rate.

0:43:260:43:29

Did the team improve over the training session?

0:43:290:43:32

3, 2, 1, go!

0:43:320:43:34

So the girls have been given a timing challenge,

0:43:380:43:41

and we've got them as close to the water as possible

0:43:410:43:44

without them having to swim.

0:43:440:43:45

OK. We need to work out the stroke rate per minute for three strokes.

0:43:510:43:55

-Mm-hm. I'll do the timing.

-And I'll count. Pass me a pen.

0:43:550:43:59

So they know what they've got to do.

0:43:590:44:02

The team are out on a training session,

0:44:020:44:04

rowing up and down straight lengths on the river.

0:44:040:44:07

As the boat comes past them, they have to work out

0:44:070:44:10

the team's stroke rate, which is the number of strokes

0:44:100:44:13

they make in a minute.

0:44:130:44:15

They need to take measurements for three different straights

0:44:150:44:17

over the team's training session and plot them on a graph.

0:44:170:44:22

Right, looks like the team are heading their way.

0:44:220:44:25

-Go.

-One...

0:44:280:44:30

So, Alanna is timing a minute on the stop watch,

0:44:300:44:33

while Emma counts the strokes.

0:44:330:44:35

-18.

-Stop.

0:44:370:44:40

-Write it down.

-18.

0:44:400:44:42

Right. 18 strokes per minute was the stroke rate

0:44:420:44:45

of their first straight. Not bad, they're warming up.

0:44:450:44:48

-Are you ready for the next straight?

-Go.

0:44:480:44:51

It's really important for rowers to know their stroke rate,

0:44:520:44:55

as it's a good indication of how fast they're going during a race.

0:44:550:44:58

-If stroke rate increases, so should the speed.

-19, 20.

0:44:580:45:03

-Stop.

-OK, 20.

0:45:030:45:06

And there's the second one - 20 strokes per minute.

0:45:060:45:09

That's pretty good, but come on team, let's get to competition rate.

0:45:090:45:14

It's really important to get a precise measurement,

0:45:150:45:18

because in a race, every stroke, and every second, counts.

0:45:180:45:21

-26.

-Stop.

-26.

0:45:210:45:25

OK, 26.

0:45:250:45:27

Wow! 26 strokes a minute - that's got to hurt!

0:45:270:45:31

-OK, let's plot those results on the graph.

-1.

-18.

0:45:310:45:37

So that'll be there.

0:45:380:45:40

2 is 20, so...

0:45:430:45:46

26.

0:45:480:45:49

-OK, now join them up, girls.

-And this one.

0:45:530:45:56

Lovely.

0:45:580:46:00

So, what was their average rate across their training session?

0:46:000:46:04

So, 18 plus 20, that's 38.

0:46:040:46:07

Yeah, that's the total of the first two straights.

0:46:070:46:10

Then 38 plus 26, that's 64.

0:46:100:46:15

Great. So that's the total of all three straights.

0:46:150:46:17

Now, what's next?

0:46:170:46:20

We need to divide 64 by 3, so that's 21.3 recurring.

0:46:200:46:27

That's a good job, girls. You've got the average stroke rate,

0:46:270:46:30

and without a calculator and everything.

0:46:300:46:33

-Now add that to the graph.

-OK. So, 21 would be, like, there.

0:46:330:46:38

So, do you think they got better during the session?

0:46:400:46:43

Yeah, I think they did.

0:46:430:46:45

because they started off at 18 strokes per minute, below average,

0:46:450:46:48

and then they ended up at 26 strokes per minute, above average,

0:46:480:46:53

so, yeah, I think they did.

0:46:530:46:55

Looks like they got it right. They first measured three different stroke rates over the team's

0:46:550:47:00

practice session and plotted them on the graph.

0:47:000:47:02

They worked out the average - in their heads, no less - to prove

0:47:020:47:06

whether the team's stroke rate improved over the session.

0:47:060:47:10

-How did they do again, girls?

-BOTH: They improved.

0:47:100:47:12

They have completed their 3, 2, 1, Go! challenge,

0:47:140:47:17

and rower Anna Watkins has got their prizes.

0:47:170:47:19

Well done, as well, Alanna. There's your certificate

0:47:190:47:23

and a very shiny medal. Good work!

0:47:230:47:26

Top job, girls.

0:47:270:47:29

Now your teacher has a challenge for you. 3, 2, 1, go!

0:47:290:47:34

Sports people must be fast, strong,

0:47:390:47:44

and deadly accurate.

0:47:440:47:46

But did you know they wouldn't be able to compete without maths?

0:47:480:47:52

Time keeping...

0:47:530:47:54

..scoring...

0:47:560:47:58

speed...

0:47:580:48:00

shape...

0:48:000:48:02

distance. It's all mathematics.

0:48:020:48:05

A tenth of a second or just a few millimetres

0:48:050:48:09

can transform an ordinary person into a world champion.

0:48:090:48:13

COMMENTATOR: Great Britain get the gold!

0:48:130:48:15

This is...

0:48:150:48:17

-3, 2, 1...

-Go.

0:48:170:48:19

We take teams to a secret location...

0:48:190:48:21

This really is a special place.

0:48:210:48:24

This is fabulous.

0:48:260:48:28

..to be given a behind-the-scenes tour...

0:48:280:48:31

HE SCREAMS

0:48:310:48:32

HE LAUGHS

0:48:320:48:33

..and meet their sporting heroes...

0:48:330:48:36

Hi, Jack, nice to meet you.

0:48:360:48:39

..who'll give them a maths challenge.

0:48:390:48:41

3, 2, 1, go!

0:48:410:48:45

-Go!

-Go!

0:48:450:48:47

And if they get it right...

0:48:470:48:49

17!

0:48:490:48:52

One, two, three, four.

0:48:520:48:56

Probability suggests we should dive to the bottom right corner.

0:48:560:48:59

..they win a gold medal.

0:48:590:49:02

This challenge is all about rugby.

0:49:040:49:06

Rugby union is played on a grass field up to 100 metres long

0:49:090:49:13

and 70 metres wide.

0:49:130:49:15

Two teams of 15-a-side try to get an oval-shaped ball

0:49:150:49:18

to either end of the pitch.

0:49:180:49:20

The ball can be kicked forwards, but only passed sideways or backwards.

0:49:220:49:28

Five points are scored for a try, and a further two for converting it,

0:49:280:49:33

and tackling IS allowed.

0:49:330:49:34

So, are you ready?

0:49:340:49:36

3, 2, 1, go!

0:49:360:49:39

Today, rugby fans Owen and Cameron are being taken to a secret location

0:49:410:49:45

in Cardiff in Wales to complete their 3, 2, 1, Go! challenge.

0:49:450:49:51

They both play for local teams,

0:49:510:49:53

and Cameron has had some pretty important matches, even a cup final.

0:49:530:49:58

All your family and that was there watching, like, me,

0:49:580:50:01

so you've done something, you've achieved something.

0:50:010:50:05

That's what it felt like when I walked onto the pitch.

0:50:050:50:08

Cameron has been playing rugby for four years.

0:50:080:50:11

He's a flanker in the scrum.

0:50:110:50:14

He plays for Rumney and Cardiff Schools,

0:50:140:50:17

and has won Player of the Year.

0:50:170:50:18

Although the lads don't know where they're going yet,

0:50:180:50:21

they're already looking forward to it.

0:50:210:50:24

Yeah, should be good.

0:50:240:50:25

Owen has also been playing rugby for four years.

0:50:260:50:29

He plays the number eight position,

0:50:290:50:31

so it's his job to bind between the locks at the back of the scrum.

0:50:310:50:35

He plays for the Glamorgan Wanderers,

0:50:350:50:38

and has won the Cardiff District Cup.

0:50:380:50:40

And the boys have just seen where they're going.

0:50:400:50:43

It's the Millennium Stadium, home to the Wales national rugby union team.

0:50:430:50:48

Every year, it hosts their Six Nations home games,

0:50:480:50:51

in front of 74,500 fans.

0:50:510:50:53

It even has its own retractable roof to keep everyone nice and dry.

0:50:530:50:58

This is where the boys are going to be given their 3, 2, 1, Go! challenge.

0:50:580:51:02

Cameron, Owen, welcome to the Millennium Stadium.

0:51:070:51:10

This is the entrance that only the players get to use.

0:51:100:51:14

OK, so this is where the players come in on a match day.

0:51:140:51:16

And the boys are being given a backstage tour.

0:51:180:51:22

This is the Welsh home dressing room.

0:51:230:51:26

And this is where all the favourite players come before a match.

0:51:260:51:30

Got all the shirts lined up.

0:51:310:51:33

-Can I keep one of the tops?

-Oh, I dunno.

0:51:340:51:38

-They won't mind.

-Maybe if you get a cap you can.

0:51:380:51:40

Yeah, nice try, Owen!

0:51:400:51:42

The dressing rooms aren't just where the teams prepare for matches,

0:51:420:51:45

they're also where they come to recover.

0:51:450:51:48

At the end of the game, the players have got so many bruises

0:51:480:51:50

and so much damage to their muscles,

0:51:500:51:52

they need to have a bath full of ice.

0:51:520:51:55

Imagine sitting in that, full of ice,

0:51:550:51:58

for about two or three minutes.

0:51:580:52:00

Could you imagine doing that?

0:52:000:52:02

Um, no.

0:52:020:52:04

HE LAUGHS

0:52:040:52:05

This is where every Welsh rugby player dreams of walking out.

0:52:100:52:14

Cameron and Owen get it all to themselves.

0:52:140:52:18

There's only one word to describe it.

0:52:180:52:20

Big.

0:52:200:52:22

Big. I've never been on here, it's amazing.

0:52:240:52:26

Today, two of the Wales national team have taken a break in training

0:52:280:52:32

to give the boys their 3, 2, 1, Go! maths challenge.

0:52:320:52:36

-OK, boys?

-All right.

-What's happening?

-How's it going?

0:52:360:52:38

-Nice to meet you. Harry.

-Hi.

-Harry, how's it going?

-Owen.

0:52:380:52:42

-Lloyd, hi.

-Cameron.

-How's it going?

-Yeah, good.

0:52:420:52:45

Lloyd Williams plays for the Cardiff Blues.

0:52:450:52:49

He plays scrum half, so he makes many of the tactical decisions.

0:52:550:52:59

He's earned six international caps,

0:52:590:53:01

and represents Wales in the Six Nations.

0:53:010:53:04

-What position are you?

-Number 8. I'm prop.

-How about you?

0:53:060:53:10

-Flanker. Open side.

-Open side.

0:53:100:53:13

THEY LAUGH

0:53:130:53:15

Harry Robinson loves playing at the Millennium Stadium.

0:53:160:53:21

He plays on the wing.

0:53:230:53:25

His team is also the Cardiff Blues and, at only 18,

0:53:250:53:29

he's been selected as the youngest player in the Wales squad.

0:53:290:53:33

-Who are your favourite players, then?

-Um, probably Sam.

0:53:330:53:36

-Sam, yeah.

-Gethyn Jenkins, yeah.

0:53:360:53:40

Flanker Gethyn Jenkins.

0:53:400:53:43

Right, enough of the chat. Time to be given their

0:53:430:53:45

3, 2, 1, Go! challenge. Listen up, lads.

0:53:450:53:48

Here you go boys, here's your task.

0:53:490:53:51

Your team has just scored five points for a try under the posts.

0:53:510:53:53

You get another two points for a successful conversion.

0:53:530:53:56

From a given spot on the pitch, how far will you need to kick the ball

0:53:560:54:00

in a straight line before it just clears the crossbar?

0:54:000:54:02

3, 2, 1, go!

0:54:020:54:04

So the boys have been given a formulaic and measuring challenge.

0:54:040:54:10

They need to work out how far the ball will travel in a straight line

0:54:100:54:13

from a given spot on the pitch, to where it just clears the crossbar.

0:54:130:54:18

They're being given the height of the bar,

0:54:180:54:20

but the other two sides of the right-angled triangle are missing.

0:54:200:54:23

So, we've got to try and get that ball over the post.

0:54:230:54:28

We know the height of the bar, so we need to work out this length here

0:54:280:54:32

to find out how we're going to kick the ball over the post.

0:54:320:54:35

We're going to have to use Pythagoras for that.

0:54:350:54:38

Good thinking, Cameron.

0:54:380:54:40

Right. Now to measure the bottom length.

0:54:400:54:44

Two, three...

0:54:440:54:47

Pythagoras's theorem, said to have been deduced by a Greek philosopher

0:54:470:54:51

and magician over 2,500 years ago, has been helping people work out

0:54:510:54:55

the lengths of the sides of triangles ever since.

0:54:550:54:57

They can't measure the length of the longest side - the hypotenuse -

0:54:570:55:01

directly, so they're going to have to work it out by knowing

0:55:010:55:03

the length of the other two sides.

0:55:030:55:06

15.

0:55:060:55:07

It's 15 metres, so write 15 metres in there.

0:55:080:55:12

So, we know that's 15 metres.

0:55:120:55:16

Now we need to find out this, so if we use the ruler.

0:55:180:55:21

Draw the line.

0:55:210:55:22

From here to the ball.

0:55:260:55:28

OK. They've got the measurements, now to apply the formula.

0:55:280:55:31

We need to name the sides first, so...

0:55:310:55:33

Oh, well done.

0:55:360:55:38

C.

0:55:380:55:40

So, they know the lengths of the sides A and B,

0:55:400:55:43

so what's the equation to find out C?

0:55:430:55:47

Then we can write A squared.

0:55:470:55:50

A squared.

0:55:500:55:53

Plus B squared...

0:55:530:55:56

equals C squared.

0:55:560:56:00

That's right, Pythagoras's theorem is A squared plus B squared

0:56:000:56:05

equals C squared.

0:56:050:56:07

Oh, I love a bit of Pythagoras with my rugby!

0:56:070:56:09

And we're going to need to substitute the numbers, then, for the letters,

0:56:090:56:14

-3.6.

-3.6.

-Squared.

0:56:140:56:18

Yeah, 3.6 is the distance between the crossbar and the floor.

0:56:180:56:23

Plus 15 squared.

0:56:230:56:26

15 is the distance the boys measured from the ball to the goalposts.

0:56:260:56:31

-Equals.

-Equals...

-OK. So, do the maths.

0:56:310:56:35

3.6 squared = 12.96.

0:56:350:56:40

12.96.

0:56:400:56:44

And 15 squared equals?

0:56:440:56:46

225.

0:56:460:56:48

-So what's next, boys?

-So, 12.96 plus 225 equals...

0:56:480:56:55

237.96.

0:56:570:57:02

So, that's going to be C squared.

0:57:030:57:05

C squared equals 237.96.

0:57:050:57:13

Then you have to do the square root of that to get the answer of

0:57:130:57:16

the distance from the ball to the post.

0:57:160:57:21

So, the square route is 237.96 is...

0:57:210:57:27

Oh, no, hold on, don't tell me. I can do this in my head.

0:57:270:57:30

15.43.

0:57:300:57:37

Yes, I knew that. I knew it.

0:57:370:57:39

So, the distance is 15.43 metres.

0:57:390:57:45

It looks like they've got it right, and to two decimal places as well.

0:57:460:57:50

First, they realised that, in order to find the distance the ball

0:57:500:57:54

would travel, they needed to use Pythagoras's Theorem.

0:57:540:57:57

They were already given the height of the bar,

0:57:570:57:59

which they labelled A, then they expertly measured

0:57:590:58:02

the length along the grass, which they called B.

0:58:020:58:05

To find the missing length, C, they applied the formula

0:58:050:58:08

with deadly accuracy, by adding the squared values

0:58:080:58:11

of the two known sides, then finding the square root.

0:58:110:58:15

Easy!

0:58:150:58:17

So what was the distance again?

0:58:170:58:19

BOTH: 15.43 metres.

0:58:190:58:22

Now, they can clear the bar with maths, but can they with a boot?

0:58:220:58:26

Oh, yes! He scores!

0:58:290:58:32

Congratulations, Cameron. Well done, mate.

0:58:320:58:34

The boys have completed their 3, 2, 1, Go! challenge

0:58:340:58:37

and Lloyd Williams and Harry Robinson have their prizes.

0:58:370:58:40

-There's your medal.

-Thank you.

0:58:400:58:43

Well done, boys.

0:58:430:58:44

Now your teacher has a challenge for you.

0:58:440:58:46

BOTH: 3, 2, 1, go!

0:58:460:58:47

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