Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.

Discover which fabrics shrink the most in the wash and why.

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

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

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

In this activity your child will create their very own marble maze!

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.

This science fair project idea explores whether mint, known for its âcooling sensationâ really does lower temperatures.

People have favorite flavors, but what about ants? Which ant food is the most popular?

This science fair project idea demonstrates that plants give off water.

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

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

Blend science and math to explore a very important first grade social studies question: does our planet contain more land or more water?

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

Discover whether cold or hot water from the faucet will boil faster on the stove.

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

Come take off your shoes and explore with your feet. Your child will embark on a barefoot adventure as he plays with different textures.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

This science fair project idea explores the different properties & interactions of sugar molecules.

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

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.