Practice multiplication facts and geography at the same time in this fun third grade math card game.

Science fair project that compares the freezing temperature of salt water and freshwater in order to learn about supercooling and condensation nuclei.

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

This fun geometry game requires players to use measurement, find perimeter, and draw polygons. It's great for a fourth grade math student!

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

Teach your third grader about the concepts money and purchasing with this "Mock Card Shop" activity.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.