2/20 Andy travels back in time 152 million years, to the time of diplodocus.
12/20 Jess has a close look at a millipede and shows how it differs from a centipede.
1/20 Andy travels back in time 65 million years, to the time of Tyrannosaurus rex.
11/20 Jess meets up with some children and together they search in a meadow for butterflies.
14/20 It's snowing at Lowick School and the children rush outside to make snow angels.
5/30 Dr Ranj warns Deep that scratching ringworm can spread the germs to other children.
12/20 Sophie brings her favourite toy dog to school to show everyone.
4/30 Nurse Morag and the Healthy Helpers play a game of snotty football.
10/20 Davey, Abbie and their friends at Lowick School make their very own pretend school shop.
3/30 Riz sees only blurry shapes when Dr Ranj tests his eyes.