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

What's the quickest way to separate salt and pepper? Let static electricity do the work! Your child will be fascinated by this simple experiment.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

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!

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

Help your child celebrate the summer and the sun by making a sandy seascape.

Make edible amber fossils with your second grader to explore the fascinating world of science!

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

In this science fair project, students use the streak test to tell minerals apart from each other.

This balloon-powered car project is a great way for your kid to learn about energy and how it can be used efficiently.

This science fair project teaches students about wilting and browning of salad greens.

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.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

This science fair project teaches students the differences between fruits and vegetables.

In this science fair project, kids will be able to see where germs reside on their hands while gaining insight into the benefits of thorough hand washing.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

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

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

Help your kid feel like a superhero with this safe and fun science experiment that creates an electrical charge that's like a mini lightning bolt!

Help your child make a beautiful homemade sandcastle that will last!

Slip some science into storm watching with a homemade rain gauge!