Number Games for Kids – a variety of games for many content areas K- 5.
Arcademic Skillbuilders
Arcademic Skillbuilders – many activities to practice addition, subtraction, multiplication and division facts.
Internet4Classrooms
Internet4Classrooms – this website contains interactive games for many concepts in mathematics.
ABCya! Elementary Computer Games
ABCya! – interactive number games per grade level.
A Math Dictionary for Kids
Math Dictionary – look up words to see definitions and examples.