To tie-in with the launch of The Magic Key on BBC television, Oxford University Press is publishing six activity books. These are black and white books featuring the characters from The Magic Key adventures, and they provide educationally sound, carefully structured activities which are lots of fun too. The Magic Key Shapes and Sizes Book will help children learn about early mathematical concepts of shape and size.The Magic Key is to be a major 26 part BBC television series featuring the characters from Oxford Reading Tree.The Oxford Reading Tree characters are recognized by children in virtually all primary schools, and know and loved by parents and children.This is the first time BBC Education and BBC children's have jointly invested in a children's TV series. It will be shown on both. Transmission dates to be confirmed. The series is produced by HIT Entertainment, makers of Kipper, Percy the Park Keeper and Bob the Builder programmes.