Interactive Website for kids

When I was a kid and was beginning to learn to use a computer (this was when there was only MS-DOS) there were games for kids to learn. I think we need more of those instead of kids going online and playing senseless games. I remember there was a Mario Learning to Type game. I was hooked because it was Mario, a character I knew and it made me want to learn. We just need a well-known character that kids would know today and put them into a game that would teach them to read, type or to do simple math. Kids would be addicted to see their superhero and at the same time, they will learn a lot.