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In this free science fair project idea, kids will conduct an easy electrolysis of water experiment to test solutions of salt, baking soda, tap water, and more.

Become familiar with ratios and learn how to measure the diameter of the Sun and the Moon in this fun science fair project idea.

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!

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

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

Believe it or not, images that are cast upon your eye's light-sensitive screen (called the retina) are upside down. Here's a fun, fast experiment to prove it!

Demonstrate which cooking method gets rid of the most fat.

If you find yourself with a pair of kids' rain boots too cute to toss and too worn to wear, try making this fun and easy planter.

In this wind tunnel experiment, you'll make a wind tunnel to test lift and airflow on a model plane and explore aerodynamics and the Bernoulli Principle.

Learn about calorimetry, make a bomb calorimeter, and experiment with combusting different nuts to see which one produces the most energy!

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

Explore the neural and mental mechanisms at play in mental imagery.

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

Bring the magic and mystery of the night sky to the light of day with this fun constellation art project!

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

The weather is a key kindergarten science concept. With this activity your child will learn about wind direction and create a self portrait, too!

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

This science fair project demonstrates the "power of conformity".

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

This fun middle school science fair project idea helps student discover the concepts behind deep sea diving and how Cartesian divers work.

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

This science fair project determines if the allelopathic chemical produced by the black walnut tree biodegrades immediately or persists over several days.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

This science fair project idea determines if the color of light affects the growth of plants.

This activity provides a solution to all those leaves on your doorstep, while also giving your child a fun science lesson.

Science fair project that demonstrates how a rainbow forms, by using water to split white light into its many colors.

Learn about nature by making your own mini moss garden.