Overview: The cold facts about squeezing a lot into a little. See how a little hot air can make a lot go a long way, and before the end of the Programme some of the audience will get blown up! So, sit down and find out how, with a bit of inflation, you could be on the move. Meanwhile - Think of a Number - squeeze six marbles into a matchbox and divide them between three boys and three girls so that each person receives a marble but one marble remains in the box.