Ends 5.35.
Arthur Grandma teaches Arthur to Play marbles, and Brain suffers a run of bad luck.
4.10 The Mummy The Dark Medjai escapes from prison.
4.35 Watch My Chops Thanks to
Corneil, Bernie is mistakenly hailed as a genius.
4.45 Cavegirl Left alone to defend the village, Cavegirl forms an unlikely alliance. Continues Friday 4.45pm.
This week's episodes written by Mark Williams
5.00 Blue Peter The second of two special sporting extravaganzas.
Signed repeat tomorrow 7.30am BBC2 www.bbc.co.uk/bluepeter
5.25 Newsround