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Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.

Take to the air with science by experimenting with helicopter seeds right in your own backyard!

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

This science fair project idea examines how well individuals can remember a story they were told and how accurately they pass that story along.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

Using a toy race car kids create a visual model of the Doppler Effect.

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

Turn the common pastime of constructing paper airplanes into a lesson on the physics of aerodynamics and flight with this fun science activity.

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

This science fair project idea examines the reason boats are shaped and engineered.

This science experiment tests if dog saliva can really help heal wounds.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

In this design challenge, your child will create a parachute for a small toy using typical household items.

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

Discover flight initiation distance as you play around in the park with this fun bird watching project!

Camouflage is one of the most important animal adaptations in the African savanna biome. Kids create their own camouflage with this fun science fair project.

In this science fair project, students will try to discover if test subjects can detect the presence of Monosodium Glutumate (MSG) in food.

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

This science fair project focuses on the use of the enzyme amylase found in human saliva to break down starch into sugar.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.