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The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

Your third grader will be amazed at the explosive combination of vinegar and baking soda in these chocolate volcano cupcakes with white chocolate "lava."

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

What is it about a Slinky that causes it to walk down the steps? This simple experiment is a perfect illustration of both gravity and momentum.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

This science fair project idea determines what household items are good conductors of electricity.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

Play Rock Tic-Tac-Toe, the perfect outdoor game for all ages. Help your child develop thinking skills and get away from the TV!

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

Students explore hot desert plant adaptations in this cool science fair project by observing how these organisms prevent excessive transpiration.

Explore how sound waves are reflected and absorbed by producing echoes. Analyze which locations produce echoes.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

The goal of this project is to create an exciting topographical map out of dough.

Explore how dielectric heating comes into play when microwaving various liquids in this science project. This test will help you understand how microwaves work!

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.

Learn how to grow an avocado plant indoors with your 1st grader in this hands-on gardening activity.

Forget store-bought dyes this Easter: color your Easter eggs with natural dyes made with ingredients from your own kitchen in this 1st grade activity.

The objective this science fair project is to determine whether a bigger bag will allow a homemade hot air balloon to fly higher than smaller bag.

Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!

Give your science savvy kindergarten a lesson in plant science with this fun carnation experiment.

Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

Make a backbone model to explore human anatomy and life science.

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

Does your child always demand to know why the sky is blue, how the sun moves across the sky, or where wind comes from?

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