Hey 4G, check out some great sites!
https://illuminations.nctm.org/Activity.aspx?id=3533 (tesselations)
SUMDOG (you need login info)
factor captor
LOGIC PUZZLES (INTERACTIVE)
thinking blocks- bar models
http://www.explorelearning.com/ GIZMO
http://www.coolmath4kids.com/
THINK CENTRAL - MATH TEXTBOOK and MANIPULATIVES
star gazing
Lucky Star (math trivia game show)
3-6 Math games - Utah Education Network
Guess the number
CYBER CHASE (PBS math games)
Fruit shoot(comparing)
ICE ICE MAYBE (ESTIMATION)