Tutpup is a fun site for math and spelling practice. The feature that engages students is the competitive aspect. Once you join a game, you are matched with students from around the world. This simple feature adds a whole new experience. I was experimenting with the site and, even as an adult, my competitive nature came out. I thought, “I am totally going to win this!” (even though my opposition was probably a 7 year old in Australia).
For now, Tutpup is free so definitely give it a try. I plan to use it with my own children.