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Create a brush pile to help wintering wildlife stay warm and cozy through the winter.

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.

What do worms eat? Kids find out what kinds of rotting leaves and vegetables worms prefer in this cool compost science fair project.

It's easier than you think to make homemade play dough -- just a few pantry staples makes a natural version of the toy that kids have loved for generations.

Learning about how plants grow is a building block in the early grades science curriculum. Put a fun twist on this life science concept with these cup monster friends!

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

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.

In this science fair project, young children notice and track changes in trees throughout the year.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

Construct and experiment with a periscope using reflected light rays to gather an image.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

When you see those sunscreen "protection levels," what does that really mean? Try this experiment to find out.

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

Create a soda bottle garden that defies gravity! This hanging terrarium is housed in a soda bottle and perfect for crafty kids with a growing green thumb.

Pair a planetarium visit with this fun art project that mimics the look of far-off galaxies.

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

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!

A simple science experiment exploring the physics of water pressure that's been amazing people since Medieval times.