Think of a Number
7.7197830m5 seasons
FamilyKids
A light-hearted exploration of maths and science, presented by Johnny Ball.
Top Cast
Seasons
Series 1
6 episodes
1978
Series 2
6 episodes
1979
Series 3
6 episodes
1980
Series 4
6 episodes
1982
Series 5
6 episodes
1984