In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

Show your child how to construct a homemade thermometer. It's hands-on fun and a great way to learn about this important instrument!

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.