Teacher's Pet Displays is a wonderful free website worth looking at for all areas in KS 1 and KS2
This link allows you to download a large display clock to help children in converting analogue minutes into digital. For example when the long hand points to the number 4, children know that the minutes are written as :20. A mini version is also available to download.
SERC / Newbridge School
Barley Lane Campus, 258 Barley Lane
Goodmayes
Ilford, IG3 8XS
SERC is a service and information centre brought to you by Redbridge.