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This science fair project idea explores the egg's thin membrane.

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

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Is it a square or a circle? See if you can trick your friends with this zany science project!

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

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

Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

This classic children's game demonstrates how sound travels through air vs. through a solid.

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

Create your very own scented hand sanitizer that will help your child to keep those nasty germs at bay!

Kids will learn how to clean fish tank the natural way. Add catfish to the tank and see if your water gets cleaner.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

How powerful is the reaction between baking soda and vinegar? Find out here!

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

Use this fun activity to make an optical illusion picture that helps your kindergartener explore the sense of sight, and sharpen his observation skills!

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

Help your child explore chromatography, which is the process of separating colors or pigments, and create a neat art project in the process!

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

The possibilities are endless with this fun Halloween-themed STEM activity! With simple supplies, your child will experiment, adapt, and use their creativity while they build structures using different specifications.

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

This snowman's not abominable, he's adorable! Your child can bring her very own snowman to life while practicing how to create texture.

Can you imagine a sky filled with bright, colorful bubbles? Make this whimsical scene come alive with bubble science!

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.