Think of a Number poster
    TV Series

    Think of a Number

    IMDb7.8/10
    1978 - 1984
    30m/ep
    Ended
    Seasons: 5
    Episodes: 30

    A light-hearted exploration of maths and science, presented by Johnny Ball.

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    Seasons & Episodes

    1. Episode 1

    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.

    4/12/197830 min

    2. Episode 2

    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 ?

    4/19/197830 min

    3. Materials

    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 ?

    4/26/197830 min

    4. Water

    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 ?

    5/3/197830 min

    5. The Shape of Wealth

    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

    5/10/197830 min

    6. Episode 6

    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 ?

    5/17/197830 min

    Cast