there, you can select the grade from Kindergarten to like Grade 6. the games are educational; schools use them too.
Electronic learning toys are not all that great for kids. Kids this age learn best through open-ended play. Build forts or block towers with them, READ to them, play simple card games, etc. Those are the kinds of things they will learn the most from.
U could let them play online on those eduactional websites. I cant remember wat the exact site was. Ive seen a commercial on nickelodeon.
I still think the best learning game for children is books,books,books. Read to your boys and talk about the books. Take them outside on walks and talks about what you see. The best thing for them is to develop their curiosity and make them eager to learn.