By dropping a magnet through a copper tube, kids observe the cool (and bizarre) braking effect produced by the eddy currents predicted by Lenz's law.

Check out this cool and free middle school science fair project idea on how to make a solar oven.

In this fun activity, your child will create their very own solar oven to bake s'mores!

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

Use pepper and soap to discover some fun facts about the properties of water.

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

Make your own greenhouse - out of a balloon! Your child will learn how greenhouses work as they plant radish seeds and watch them grow.

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

Learn how to use the Punnett Square to predict the gene combinations of dominant and recessive traits in this fun and easy genetics science project!

Learn about where colors come from and how light absorption works in this fun experiment! All you need is a flashlight, construction paper, and cellophane!

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

Science fair project that determines which foods and drinks contain the highest amount of glucose.

How does light affect plant growth? Do different colors of light work better than others? Find out in this classic science fair project idea.

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

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.

The goal of this middle school science fair project is to examine the effect of caffeine on plant growth.

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

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

Challenge your learner to design and build a city of their own in this creative engineering activity.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

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

Discover how and which salt melts ice the quickest.

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

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

In this challenge, students are tasked with creating a model roller coaster that a marble can travel through.

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?