Have a look at this fun website Anglomaniacy. It has word games, quizzes, songs, printable worksheets and other resources for parents/carers and teachers.
This is a website produced in Poland with a great variety of resources for vocabulary and grammar for all pupils learning English. There are interactive grammar games to reinforce patterns and these are accompanied by a Polish translation. There are good worksheets and games to help teach Christmas language.
A Polish version of the text is also available at the click of a button so it supports bilingualism and would be useful for parents to use at home.
For lots more resources to support young learners of English as an Additional Language, check out Janet Storey’s excellent website here.