Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

These flying potato poppers make a cool sound, create a celebratory mood, and they can teach your child about the power of air pressure.

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

Inspire your learner to love poems like Sonia Sotomayor by reading some poetry aloud!

This science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

Check out this activity that has your kid create her own Cubist montage. Soon your kid will be well on her way to understanding the vibrant art of Cubism!

With this hands-on activity, you'll show how fall colors are hidden in the leaf all year long!

In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

This activity will further your child's ability to interpret graphs and apply math skills in a real-world situation.

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

Be active while learning about American history with this twist on the classic running game "Capture the Flag."

Here's a black fuzzy spider that's sure to cause a silly fright! This eight-legged creepy crawler is sure to surprise anyone looking for a treat.

Find out whether optical mice are useful on all surfaces or if there are drawbacks to this supposedly superior solution to the traditional roller-ball mouse.

Find out whether putting something on top of a plant will inhibit its growth.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

Your child can transform a triangle of felt into a colorful and motivating pennant sharing all her favorite characteristics and traits.

Show your child how to concoct a simple duo of household ingredients that changes color as acids and bases are added!

In this activity, your kid will watch coal turn into crystals right before her very eyes, and learn some science along the way!

The human knot game is a perfect team-building exercise and a fun activity that's sure to bring lots of laughs along the way.

This twist on the classic game of freeze tag spells fun for your fourth grader--and the whole family!

This science project teaches students to classify different shapes of leaves.

Take play-dough to the next level with this homemade recipe, adding surprising ingredients perfect for summer!

This Halloween, your child can make her very own jar light that will shine bright throughout the night!

Here's a fun family activity: have your child make a cameo appearance by creating and drawing on their own silhouettes!