0:00:02 > 0:00:04# In an ordinary sofa In an ordinary room
0:00:04 > 0:00:08# Are extraordinary heroes who are standing by to zoom
0:00:08 > 0:00:11# To wherever they are needed they are speeding out today
0:00:11 > 0:00:13# The Numberjacks are on their way
0:00:15 > 0:00:18# They will help you with your problems
0:00:18 > 0:00:21# They are waiting for your call
0:00:21 > 0:00:24# No problem is too big for them
0:00:24 > 0:00:26# No problem is too small
0:00:26 > 0:00:29# Things may all be going wrong but you can bet it's not for long
0:00:29 > 0:00:35# The Numberjacks are on their way The Numberjacks are on their way! #
0:00:37 > 0:00:39I'm not sure I like this!
0:00:39 > 0:00:43You're fine, Four. My Buddy Blocks are very strong.
0:00:43 > 0:00:47I've never been as high as this before. Eight blocks high!
0:00:47 > 0:00:49Ohhhhh!
0:00:49 > 0:00:54- Well done, Four.- I think I'll jump down to my Buddy Blocks.
0:00:54 > 0:00:59- Four. That's better. - You're only half as high as you were.
0:00:59 > 0:01:03- I'm feeling a lot better for it. - Jump down again.
0:01:04 > 0:01:10Two blocks. Even better! That's only half as high as four.
0:01:10 > 0:01:13And half again is one.
0:01:13 > 0:01:16To be honest, this is quite high enough for me.
0:01:16 > 0:01:18I'll have a go.
0:01:20 > 0:01:21One!
0:01:21 > 0:01:24Not very exciting.
0:01:24 > 0:01:25Two!
0:01:25 > 0:01:29Twice as high as one block, but still doesn't do much for me.
0:01:29 > 0:01:32- Careful!- Four blocks!
0:01:32 > 0:01:36Pretty good, but I'm going for double that number.
0:01:36 > 0:01:41Eight blocks, here I come!
0:01:41 > 0:01:43Urrr-oh, yes!
0:01:43 > 0:01:46Yes, very nice! But come down now.
0:01:46 > 0:01:49OK. Eight.
0:01:49 > 0:01:51Four.
0:01:51 > 0:01:53Two.
0:01:53 > 0:01:54One!
0:01:54 > 0:01:56- We both did it!- Yes!
0:01:56 > 0:01:58ALARM BEEPS
0:01:58 > 0:02:00Ah! More excitement.
0:02:00 > 0:02:02See you later, Four.
0:02:17 > 0:02:19We have a call.
0:02:22 > 0:02:26Agent 37 here. There's something going wrong.
0:02:26 > 0:02:28- But not for long! - Tell us the problem.
0:02:28 > 0:02:32- Have a look at what's happening. - Putting it on screen.
0:02:40 > 0:02:44That bike's going to be hard to ride with only one wheel!
0:02:44 > 0:02:47And look at this boy and his car.
0:02:51 > 0:02:53What happened?
0:02:53 > 0:02:59It had four wheels, but now it's only got two. ..No! Only one wheel.
0:03:03 > 0:03:06- Right, this needs sorting out.- So...
0:03:06 > 0:03:09Yes! The Numberjacks are on their way.
0:03:09 > 0:03:14- Thank you!- And the Numberjack who's going is...Number Four!
0:03:14 > 0:03:16Oh! Even more excitement.
0:03:18 > 0:03:21# We've got a problem What shall we do?
0:03:21 > 0:03:23# Who's going out there? Who do we choose?
0:03:23 > 0:03:26# We've got a problem to explore
0:03:26 > 0:03:29- # Who's going out there? - Number Four! #
0:03:29 > 0:03:32SIREN WAILS
0:03:53 > 0:03:55Good luck, Four.
0:03:58 > 0:04:02I'm checking everything's clear...
0:04:02 > 0:04:04All clear! Off you go.
0:04:12 > 0:04:13Four! Three!
0:04:13 > 0:04:16Two! One! Zero!
0:04:23 > 0:04:26Scanning for a four to land on...
0:04:26 > 0:04:30Not yet...not yet...
0:04:30 > 0:04:31Found a four!
0:04:35 > 0:04:39- Oh!- Good luck, Four!- Thank you!
0:04:41 > 0:04:43More troubles!
0:04:43 > 0:04:47Agent 58 here. There are more things going missing.
0:04:47 > 0:04:48On the screen...
0:04:48 > 0:04:52Nice pair of earrings!
0:04:52 > 0:04:55Oh! Just one now.
0:04:59 > 0:05:01And four lovely rings.
0:05:03 > 0:05:05Two...
0:05:05 > 0:05:09Oh! One! That's strange.
0:05:09 > 0:05:11They look nice.
0:05:11 > 0:05:13Oh!
0:05:13 > 0:05:15What's going on?
0:05:15 > 0:05:20Agents, can you help us? Is there a pattern here?
0:05:20 > 0:05:24Yes. There's four things, two get taken away and they become two.
0:05:24 > 0:05:26And if there are two things,
0:05:26 > 0:05:30one gets taken away and it becomes one thing.
0:05:30 > 0:05:34OK. Four becomes two and two becomes one.
0:05:34 > 0:05:37So we know what is happening. But why?
0:05:37 > 0:05:41I think I can hear something. Listen!
0:05:41 > 0:05:45ELECTRONIC WARBLING I've heard that sound before!
0:05:45 > 0:05:48And I've seen that hat before. The Numbertaker!
0:05:48 > 0:05:51All we need to know about him is going on screen.
0:05:55 > 0:05:59# Numbertaker, Numbertaker Have you seen the Numbertaker?
0:05:59 > 0:06:03# Taking all the numbers he can see
0:06:03 > 0:06:07# Picking, nicking Getting, netting
0:06:07 > 0:06:10# As mean a Numbertaker as can be
0:06:10 > 0:06:15# With his number sucker-upper He's a number mucker-upper
0:06:15 > 0:06:20# He's as mean a Numbertaker as can be! #
0:06:20 > 0:06:22Be careful, Four!
0:06:22 > 0:06:25- You've got to stop him taking things.- OK.
0:06:25 > 0:06:28I think he's heading for the school.
0:06:28 > 0:06:34- Four, you've got to get there before him.- OK, I'll try!
0:06:34 > 0:06:36I've got the school on screen.
0:06:36 > 0:06:40Four, is there anything that the Numbertaker might be after?
0:06:40 > 0:06:43Anything that there are four of or two of?
0:06:43 > 0:06:46I think the papers are all right.
0:06:48 > 0:06:49There's...
0:06:49 > 0:06:51one, two,
0:06:51 > 0:06:53three, four,
0:06:53 > 0:06:55five, six,
0:06:55 > 0:06:57seven, eight!
0:06:57 > 0:07:00- Eight things should be all right. - I hope so.
0:07:02 > 0:07:06Oh, no! There were eight, but now there are only four!
0:07:07 > 0:07:08Two...
0:07:08 > 0:07:10one!
0:07:10 > 0:07:11Things are getting worse!
0:07:11 > 0:07:14The Numbertaker is making eight into four,
0:07:14 > 0:07:17four into two, and two into one.
0:07:17 > 0:07:20- I'm sure that reminds me of something.- What?
0:07:20 > 0:07:24- When I was in the gym... - Putting it on screen!
0:07:24 > 0:07:28..I started on eight blocks, then jumped to half as high - four.
0:07:28 > 0:07:34Then jumped to half as high again - two. And half again - one.
0:07:34 > 0:07:38The Numbertaker is making the number half as big each time.
0:07:38 > 0:07:42If he keeps doing that, anything could happen!
0:07:43 > 0:07:46Half of two wings is one wing,
0:07:46 > 0:07:48and a bird wouldn't be able to fly.
0:07:48 > 0:07:52And if the dancing cow had half the number of legs,
0:07:52 > 0:07:54that's two instead of four,
0:07:54 > 0:07:56and half of two is one,
0:07:56 > 0:07:59and she couldn't dance at all!
0:07:59 > 0:08:02And a spider might start with eight legs,
0:08:02 > 0:08:04then have only half that number -
0:08:04 > 0:08:05four -
0:08:05 > 0:08:07then half again is two,
0:08:07 > 0:08:09and half is one,
0:08:09 > 0:08:12and she'd have a terrible time spinning her web.
0:08:13 > 0:08:17We've got to stop the Numbertaker making numbers half as big.
0:08:17 > 0:08:21- I'll get the Brain Gain going. - Let's get things back to normal.
0:08:26 > 0:08:28# Brain Gain Brain Gain
0:08:28 > 0:08:30# To solve the problem Use our brain
0:08:30 > 0:08:33# The way to get your brains all linking up together
0:08:33 > 0:08:38# Joined up thinking. # Getting brain power now! Brain Gain!
0:08:39 > 0:08:42OK. What Brain Gain do we need?
0:08:42 > 0:08:46One thing has got to go back to two things.
0:08:46 > 0:08:48And two things go back to four things.
0:08:48 > 0:08:51And four things go back to eight things.
0:08:51 > 0:08:54Oh! I'll TRY to say all that!
0:08:54 > 0:09:00One becomes four... No, no, eight becomes two...no!
0:09:00 > 0:09:05Two becomes... Oh, I don't know! It's hard to remember.
0:09:05 > 0:09:08I'm not sure that's going to work!
0:09:10 > 0:09:14Oh! This feels a bit mixed up, this Brain Gain.
0:09:14 > 0:09:17Oh, dear!
0:09:17 > 0:09:21I think we might be making things worse instead of better.
0:09:21 > 0:09:27I'm sorry! One becomes two, two becomes four -
0:09:27 > 0:09:31it's very hard to remember, especially when you're jumping.
0:09:31 > 0:09:35Is there a quicker way of saying it? Agents, any ideas?
0:09:35 > 0:09:40- If the Numbertaker's made numbers half as big as they were...- Yes...
0:09:40 > 0:09:42..we can do the opposite
0:09:42 > 0:09:46and make the numbers twice as big as they are! We can double them!
0:09:46 > 0:09:49I remember that in the gym.
0:09:49 > 0:09:52Eight jumped up, and the number doubled every time.
0:09:52 > 0:09:54One doubles to two,
0:09:54 > 0:09:57two doubles to four, four doubles to eight.
0:09:57 > 0:10:00So the Brain Gain is very simple - double the number!
0:10:00 > 0:10:03Make the number twice as big!
0:10:03 > 0:10:06I can do that!
0:10:06 > 0:10:08Double the number! Twice as big!
0:10:11 > 0:10:14That feels better!
0:10:14 > 0:10:20Double the number of wheels! Twice as many!
0:10:20 > 0:10:23Double the number!
0:10:26 > 0:10:28Double!
0:10:28 > 0:10:31And double again for the rings!
0:10:34 > 0:10:36Double the number of wheels!
0:10:37 > 0:10:39And double again!
0:10:40 > 0:10:43Double, double!
0:10:43 > 0:10:46Double! Two times as many!
0:10:46 > 0:10:49Twice as many!
0:10:49 > 0:10:53Hooray! Everything is back to normal!
0:10:55 > 0:10:57I knew it would all turn out fine.
0:10:57 > 0:11:00- Yes, I knew there was no...- Four!
0:11:00 > 0:11:03- Or should I say, Two!- Wah!
0:11:03 > 0:11:07- I don't like being made half my number!- And it could be half again.
0:11:11 > 0:11:13PANTING
0:11:21 > 0:11:23Half again! Oh, no!
0:11:23 > 0:11:28- Quick, Three, get doubling! - Double, double, double!
0:11:33 > 0:11:36Oh, no! I've been doubled too much!
0:11:36 > 0:11:39- Quick! Get the Numbertaker to halve you again!- What?!
0:11:39 > 0:11:42- It's your only chance!- Oh, dear!
0:11:44 > 0:11:48Numbertaker! Bet you can't make me half my number!
0:11:50 > 0:11:53Now, THAT is better.
0:11:53 > 0:11:56Three! Double the Numbertaker!
0:11:56 > 0:11:57Double!
0:12:03 > 0:12:07- He hates there being another one of him.- Oh, yes!
0:12:07 > 0:12:10You've done it! Come back now, Four.
0:12:17 > 0:12:19One, two,
0:12:19 > 0:12:21three, four!
0:12:25 > 0:12:28- Well done, Four. - I hope that IS my number.
0:12:28 > 0:12:31Let's see it all on screen.
0:12:31 > 0:12:35Everything was being made half the number,
0:12:35 > 0:12:37all thanks to the Numbertaker.
0:12:37 > 0:12:40We sent Brain Gain...
0:12:40 > 0:12:43..but it was too hard to say all those numbers.
0:12:43 > 0:12:46So I just said, "Double!"
0:12:46 > 0:12:49So things went back to normal.
0:12:49 > 0:12:51Except I wasn't very normal.
0:12:51 > 0:12:56- I doubled you too much!- Oh, no! I've been doubled too much!
0:12:56 > 0:13:00And I had to get the Numbertaker to halve me.
0:13:02 > 0:13:05And everything was back to normal.
0:13:07 > 0:13:11Now watch! I can jump up to double my number.
0:13:11 > 0:13:14Hup! ..That's six.
0:13:14 > 0:13:20Half of six is back to three. Hup!
0:13:20 > 0:13:22So what's the matter?
0:13:22 > 0:13:26Where is the number that is exactly half of me?
0:13:26 > 0:13:29I don't know.
0:13:29 > 0:13:32Maybe I'm a very special number.
0:13:32 > 0:13:36The Numberjack without a half-number.
0:13:36 > 0:13:38I'm not sure.
0:13:38 > 0:13:41Can you think of any other Numberjacks
0:13:41 > 0:13:45that haven't got a half-number? Or is Three the only one?
0:13:45 > 0:13:47Find out and call the Numberjacks!
0:13:57 > 0:14:01# The Numberjacks are on their way The Numberjacks are on their way! #