Test whether plants can grow without sunlight and water.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

This project tests the hypothesis that dark colors absorb more heat than light colors.

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

Explore if planting seeds in a certain direction will affect how fast it germinates.

I scream, you scream, we all scream for homemade spearmint ice cream!

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

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

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!