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Episode 5
Think of a Number - S1 - E5
This week Johnny discovers some dicey things about dice and a number over a thousand miles long; also something heavy about gold and cutting about diamonds. Meanwhile - Think of a Number. By using two minus and one plus signs make this all add up! 123456789 = 10
Think of a Number: Season 1 - 6 Episode s
1x1 - Episode 1
April 12, 1978
Johnny Ball, with the help of a studio audience, will show some mind-stretching models, blistering ballistics, lightning calculations and some shocking ways to store your energy - and let it go.
1x2 - Episode 2
April 19, 1978
This week Johnny discovers why hands are so handy, how to make sense of your senses, automate an automaton and how bionic a bionic man can be. Meanwhile - Think of a Number - How many times can you take 3 from 24 ?
1x3 - Episode 3
April 26, 1978
This week Johnny looks at family trees, works out how to get rid of a boomerang, puts nylon in an endless spin and turns a fossil back into a dinosaur with the aid of an element that never forgets. Meanwhile - Think of a Number - a half is a third of it - what's the number ?
1x4 - Episode 4
May 3, 1978
Lots of giggles and quite a few gurgles as Johnny explores water from H to O. Meanwhile - Think of a Number. At a quick guess, which set of numbers has the larger total ?
1x5 - Episode 5
May 10, 1978
This week Johnny discovers some dicey things about dice and a number over a thousand miles long; also something heavy about gold and cutting about diamonds. Meanwhile - Think of a Number. By using two minus and one plus signs make this all add up! 123456789 = 10
1x6 - Episode 6
May 17, 1978
This time Johnny considers why the Earth is in a flat spin; talks about what makes tocks tick and how to gain on the swings and roundabouts. So meanwhile - Think of a Number - Divide 50 by a half and add three. What's the answer ?