Games:

www.barryfunenglish.com

http://anglomaniacy.pl/

www.eslgamesplus.com

Grammar and exercises

http://www.learnenglishfeelgood.com/

http://www.lasouris-web.org/primaire/anglais.html

http://a4esl.org/

Apps

Duolingo

Teachme: Kindergarten and Teach me: 1st Grade