Why not try the following websites and apps?
Oxford Owl
gives access to 250 free ebooks.
Teach your Monster to Read
is a series of new, free games to practise the
first steps of reading.
Spelling City
is available as a website or an app that lets your
child practise weekly spellings.
Crickweb
has lots of free online English games.
Fun English Games
features lots of free English resources online.
British Council Learn English Kids
has lots of free games for younger children