You must check out this FREE
app to let your kids work on common core
(for computer, kindle, android, ipad and more)
I think you are really going to enjoy this I know my daughter does, I have added her as a homeschooler, although she is a public schooler! But shoot fun free practice on the Ipad! I have set up 2 rewards (braum's and 20$ gift card) but you could add 5 minutes free time, lunch with the teacher - ect!
I saw this site review over at FROM the POND