Including a visit to the Tweenies.
Dynamo and Slomo look at numbers 15, 17 and 20, and Scrap and Glimmer play marbles.
Sally Gray looks at innovative alternative energy sources.
Exploring the ways in which people represent space and aliens in art.
The interactive internet club for kids, live from the BBC Cybercafe, presented by Kirsten O'Brien.
Interactive show presented by Jason Bradbury in which viewers exchange views and ideas.
Rory McGrath meets the man with the oldest traceable relative, a cave-dweller from the Stone Age.
Angela Lamont asks the experts the questions that matter and today she is investigating acids and alkalis.
Sally Gray shops for traditional German souvenirs, and Thomas Lange provides a guide to German beer.
The Technosphere in Bradford.