In this programme, Gemma explores perseverance and how failure is often an important part of success.

Nina and her experimenters investigate how waterfalls are formed. Show more

Ralph van Dijk and side-kick Matrix have more questions to consolidate mental maths skills and the focus today is multiplication with zeroes.

The series reaches its climax, with Scrooge taken once again to the Cratchit's house, where Tiny Tim has recently died for lack of adequate care.