1. Oxford University Press – Oxford Practice Grammar – I like this site because you can take a grammar test to see what grammar you need to work on. It helps when you start teaching grammar to your kids so you don’t pass on bad habits 😉
http://www.oup.com/elt/global/products/practicegrammar/
2. Grammar Blast – This is a fun site for the kids to practice their grammar and it is arranged by levels so it is specific to the skills your child needs.
http://www.eduplace.com/kids/hme/k_5/quizzes/