The Bell Foundation works with parents, schools and other agencies to provide you with helpful advice and EAL resources for the classroom and home. They have sections for parents and learners with lots of ideas and activities. https://www.bell-foundation.org.uk/eal-programme/guidance/parental-involvement/
The British Council has a page for Children learning English with games, stories and activities to help them. http://learnenglishkids.britishcouncil.org/