You must sign up first so you can keep up with your scores. This is a well designed math site. Many interactive and fun activities grouped by grade-level through eighth grades. It includes Flashcards, Game Room, Homework Helper, and much more. This is an awesome site for math students.
Students can fine tune math skills through fun games and activities.
It includes games for all levels. This site gives tons of information about animals and plants that live in the ocean. Each page of this site provides text, images, and even some sounds and movies about the planets. It is full of news, games, weather, discoveries, and much more. It's worth spending some time exploring.