Good educational games for kids can be hard to come by, and finding ones that are targeted towards a specific age group are even more rare. The website CyberKidzGames.com, however, does just that. All of their online games are broken down by ages ranging from 4 to 11, and from there they are all categorized.
The math category has 32 games, geography has 26 games, literacy has 32 games, and art/music has 4 games. Your kids can learn everything from multiplication tables to state capitals, and there are even typing tests.
The games aren’t uber great, but keep in mind that they are aimed at young kids. The interfaces for the ones that I tried felt suitable for the ages they were targeting, and I could see how they would be relatively entertaining. I mean really though, how much fun can learning be? :)