5 Season
30 Episode
Think of a Number - Season 1 Episode 4 (1984)
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 ?
- Country : United Kingdom
- Genre : Family, Kids
- Studio : BBC One
- Director :
- Cast : Johnny Ball
