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

Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

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

Help your first grade scientist learn about metamorphosis by observing the life cycle of some interesting creepy crawlies.

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

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

Learn about lateral earthquake motion and its effect on high rise buildings in this simple 4th grade earth science experiment.

Lead your first grader on a nature walk ... with a scavenger hunt-style twist! They'll try to capture photos that correspond to paint chip colors.

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

Want to boost math and science learning? Take a bug expedition and give your first grader practice observing and charting what they see.

Celebrate April Fools' Day with a science prank that is sure to amuse...and educate too!

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

This weather spinner will improve observation skills by encouraging children to examine and track weather details and patterns.

Challenge your young dinosaur lover to examine dinosaur footprints and then create their own dinosaur fossil in this hands-on activity.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

Is our water polluted? Help your young scientist understand the importance of taking care of the environment with this simple experiment.

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

This science fair project idea determines the most effective method of preserving food.

Conduct a simple experiment with your child to study how dirt tracks change as they age in this 1st grade science activity.

How do we know that air exists when we can't see it, taste it, or touch it? Here's a classic experiment that will teach your kid some basics of aerodynamics!

Can you imagine a sky filled with bright, colorful bubbles? Make this whimsical scene come alive with bubble science!

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.