0:29:50 > 0:29:57.
0:30:02 > 0:30:03It's a brand-new term,
0:30:03 > 0:30:07and CBBC has sent these four magicians back to school.
0:30:07 > 0:30:10They are some of the hottest magicians in the country.
0:30:10 > 0:30:13And when they're not in your classrooms
0:30:13 > 0:30:15they're out in public thrilling families.
0:30:25 > 0:30:27If you fancy yourself as a magician,
0:30:27 > 0:30:29here's a trick you can try on your mates.
0:30:30 > 0:30:34Katherine will show you how to make a knot in the middle of a school tie
0:30:34 > 0:30:38without letting go of it and by only holding the ends.
0:30:40 > 0:30:43Can you work out how to do it?
0:30:43 > 0:30:45Keep watching, and you'll find out later in the show.
0:30:45 > 0:30:47It's going to be incredible.
0:30:48 > 0:30:50Right now though, James is at a theme park
0:30:50 > 0:30:52getting up close and magical.
0:30:52 > 0:30:53Hi, guys. How are you doing?
0:30:53 > 0:30:57I want to show you a really cool trick, with your signature, OK?
0:30:57 > 0:31:00So you can see I've got some business cards here.
0:31:00 > 0:31:02If you take one - doesn't matter...
0:31:04 > 0:31:06And what I'd like you to do,
0:31:06 > 0:31:10is I would like you to write your name on the white side, nice and big.
0:31:12 > 0:31:15Charlie's writing his autograph on the blank card.
0:31:15 > 0:31:18Yeah? Perfect, if I take that back. Take this...
0:31:19 > 0:31:21Now - you can rub that ink,
0:31:21 > 0:31:23- and it doesn't come off... No?- No.
0:31:23 > 0:31:25Good work. Right.
0:31:25 > 0:31:27Now, you've marked your card in one way, OK?
0:31:27 > 0:31:29We're going to mark it in another way,
0:31:29 > 0:31:33by punching a hole straight through the back of the card. OK?
0:31:33 > 0:31:35So if you take this...
0:31:35 > 0:31:37we'll just punch a hole about there.
0:31:37 > 0:31:40Squeeze... Perfect.
0:31:40 > 0:31:42OK, so just wiggle your finger
0:31:42 > 0:31:45underneath the hole, make sure it's real,
0:31:45 > 0:31:48and you can feel it. Make sure it's real.
0:31:48 > 0:31:50So you've marked a card in two different ways.
0:31:50 > 0:31:54You have written your name on it, and you've also punched a hole in it.
0:31:55 > 0:31:57Look - if I squeeze,
0:31:57 > 0:31:59I can actually pull that hole
0:32:02 > 0:32:06straight off the card, and you can check that out.
0:32:06 > 0:32:09- Where's it gone?- Now - that gives a very interesting problem,
0:32:09 > 0:32:11and that's what to do with the hole.
0:32:13 > 0:32:16Let's try this. Can I borrow this?
0:32:21 > 0:32:23ALL LAUGH
0:32:23 > 0:32:26He's moved the hole from the card to the cup.
0:32:26 > 0:32:29Holy moly, James, that's amazing!
0:32:29 > 0:32:31I signed my name on one of them cards,
0:32:31 > 0:32:34and then I hole-punched it.
0:32:34 > 0:32:36And then he took the hole off it,
0:32:36 > 0:32:40and then put it in the coffee cup.
0:32:40 > 0:32:45And to prove it, he poured it and it came out the hole.
0:32:45 > 0:32:47- It was amazing.- It was weird!
0:32:47 > 0:32:49I've been trying to work it out.
0:32:51 > 0:32:53Now it's time for Katherine to reveal the secret,
0:32:53 > 0:32:54in Tricks of the Trade.
0:32:56 > 0:32:58Katherine will show you how to make a knot
0:32:58 > 0:33:00in the middle of a school tie,
0:33:00 > 0:33:03without letting go and only holding the ends.
0:33:03 > 0:33:06Come on - you worked it out yet? How many of you got it?
0:33:06 > 0:33:07Perhaps you use your teeth.
0:33:12 > 0:33:17Nah. How many of you are tied up in knots trying to work it out?
0:33:19 > 0:33:21OK, let me straighten things out.
0:33:24 > 0:33:26Start with your arms crossed...
0:33:29 > 0:33:31..then pick up the ends of the tie.
0:33:35 > 0:33:37Uncross your arms...
0:33:39 > 0:33:41..and there you have it! A perfect knot.
0:33:42 > 0:33:44Did you get it?
0:33:44 > 0:33:48Now you've all got something to show off with in the playground.
0:33:48 > 0:33:50Subtitles by Red Bee Media Ltd