Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

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.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

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!

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

Take advantage of the spring and summer sun in this arts and crafts activity that has your learner creating pretty flower prints.

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

Create a mini plant habitat with your kid to help teach him what it takes to make an ecosystem work.

We all know that the Moon has different phases, but it can be hard to figure out why. Try this activity to see how the Moon's phases really work.

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

Create your own cloud with an activity that will explain how important concepts such as evaporation, condensation, and precipitation work.

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

Hone your child's skills of observation and take a look at forensic science for an interesting afternoon of exploration and detective work!

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

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.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

Recreate the fantastic phenomena of solar eclipses with your child using just a flashlight, a quarter, and her very own face!

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 free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

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

Try this simple 2nd grade science experiment to teach your child about the principles of luminosity and light reflection.

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

When you see those sunscreen "protection levels," what does that really mean? Try this experiment to find out.

You don't need to wait for rain to see a rainbow. Make one yourself, and teach your child about light and weather in the process.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

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

This project examines whether people's taste perception is influenced by what they see.