Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

This science fair project idea investigates if fats add to the flavor of food.

Grow borax crystals and get your child excited about Earth science with this crafty science experiment.

Want to help make studying the nervous system a little more fun? This thinking cap is a great way to learn external human brain anatomy.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

The next time you and your fifth grader go on a hike, take along this key to figure out which common North American animal left a track along the river bank.

In this activity your child will create their very own marble maze!