Think of a Number
Think of a Number

Think of a Number

1978 5 Seasons 30 Episodes ⭐ 7.7 Family Kids

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

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

Seasons & Episodes

EP 1

Episode 1

Johnny Ball, with the help of a studio audience, will show some mind-stretching models, blistering ballistics, lightning

EP 2

Episode 2

This week Johnny discovers why hands are so handy, how to make sense of your senses, automate an automaton and how bioni

EP 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

EP 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

EP 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 ab

EP 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 swi

EP 1

The Pressure's Mine

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 th

EP 2

Absolutely Nothing

The people who thought nothing was something - the man who invented nothing. People who have managed to sell us nothing.

EP 3

Face Facts

Faces - old faces, new faces. Pulling faces and painting faces. Discovering that looks are more than skin-deep. See the

EP 4

Seeing the Light

Reflect on the speed of light and the colour of space. Why Father Christmas is never seen. See what your screen looks li

EP 5

Mechanical Minds

Computers - digital computers, electrical computers, wind, steam and sun computers. Computers that talk and computers th

EP 6

Getting Things Moving

Seeing how the problem of Cleopatra's Needle was sewn up, how to pull your weight and someone else's besides. See a tail

EP 1

Wheels Within Wheels

The first of six programmes with Johnny Ball. Round wheels, not-so-round wheels, oval wheels, big wheels, little wheels;

EP 2

The Science of See-through Sand

He cooks, looks, hits, breaks and bends... glass. See some glass over 3,000 years old, a teardrop that goes with a bang

EP 3

No Cockles, Just Muscles, Alive Alive Oh

Squeezing muscles, waving muscles, levering muscles, springing muscles and jumping muscles. He'll be in deep water seein

EP 4

Elementarianisticalizationableism... or it's elemental when it's on the table

Atomic elements, lit up elements, man-made elements and elements that melt in your hand. See how two people become the s

EP 5

Hello Listeners

Listening to loud sounds, soft sounds, old sounds and new sounds. Recording some of the first sounds. Investigating drum

EP 6

2D or not 2D, That is the Question

Doubling dimension, flexing flexagons and perceiving perspective. See the impossible triangle, two dimensional people wh

EP 1

Reproduction

The first of six programmes with Johnny Ball This week Johnny finds out about reproduction, discovering where your heart

EP 2

What does exactly mean exactly ?

Johnny finds out how to measure a metre, what keeps a marching soldier in line when he puts his best foot forward and ho

EP 3

Musical Numbers

This week Johnny looks at a few musical numbers - discovering that time can change the National Anthem but still rule th

EP 4

Box Clever

Johnny discovers the secrets of Doctor Who's Tardis, a box that looks like one but isn't and a machine that makes boxes

EP 5

Dangerous Curves

Find out how you can draw hyperbolas, parabolas and about the illusion that something is there when it isn't. So this we

EP 6

Gambling

Find out if a fruit machine is fair and how skittles are at the fair. Also see some of the latest electronic games inclu

EP 1

In the Balance

A 6 part series with Johnny Ball. Johnny bounces back with some lighthearted explorations into numbers and science. This

EP 2

Bounce and Stretch

Watch Johnny spring through sand, cement and sponge cakes and discover new angles to pool playing.

EP 3

Planes and Flights of Fancy

This week Johnny Ball airs his views on Plain Planes and Flights of Fancy with the aid of paper darts, boomerangs, kites

EP 4

The Maze of Ways from A to B

Johnny takes off his waistcoat without removing his jacket and spins his way through maps and mazes, helped by a robot m

EP 5

Say it with Numbers

Johnny whistles for the thistle sifter, finds out how a turtle draws and even meets a computer that talks back. So, in a

EP 6

Beat It!

This week, the last of the series, it's Think of a Number and Beat it! Johnny discovers that hitting things together goe

Popular Cast

Johnny Ball
Johnny Ball