with Johnny Ball
A light-hearted exploration of numbers and science.
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 half and add three. What's the answer?
Written by JOHNNY BALL
Production ALBERT BARBER Series producer ANN REAY BBC Bristol
(Answer 103 -not 28!)