Here are some suggestions of apps and websites that you can access together with your child at home.
'Nessy' is a great resource that we have signed up to as a school. It supports reading and spelling, especially for dyslexic learners.
Try the free app 'Bitsboard'. It is ideal for vocabulary building.
Have a look at the resources on:
Colour semantics have a wealth of free resources to support early language and sentence construction:
The Communication Trust has links to many different resources parents (and teachers):