Love this interactive science site! My 3rd and 6th grader have learned about everything from the parts of a flower, to electrical currents and melting points. The games are really engaging; this has been a great supplement to our homeschooling.
After reading and seeing photos in our newspapers about the latest tornado that hit in amercia our little boy was asking How Do Tornadoes Form? this is probably bit over the head of my ds (6) but great for older children..