This is a terrific site for students to use their own data from investigations and build graphs – bar graphs, line graphs, pie charts and other types.  

The study jams site has short, fun and animated videos on a large variety of science and math topics.  The students can watch the video and then, if they choose, take a quiz to help them evaluate how well they learned the information.

The edheads site has a lot of fun and educational games for kids of any age.  You can choose a grade level or a type of game –from simple machines to virtual surgeries.  My students have always enjoyed the edheads site.

This is a kid friendly site with videos, games, stories, activities, and so on.

If you go to the kids zone, there are activities and games for the students to play.