5 teaches 3 and 4 a new game about sorting things into groups.

Numberjacks is a CGI animation and live action mix in which superhero numbers are launched from their secret base, inside a sofa, to solve numerical problems in the real world. Collaborating with Open Mind Productions from an early stage, we developed the characters and environments and have now generated over eight hours (65 episodes) of original animation in HD. It was broadcast on BBC2 and Cbeebies and has been a huge success, hitting number one in the Cbeebies ratings chart after three weeks and selling over 140,000 DVDs in seven months. The first series also picked up a Royal Television Society award and ranked third in a list of "the best educational TV programmes ever" compiled by the Times. A second series was commissioned at the end of 2008 and has recently finished showing on Cbeebies.