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This science fair project idea investigates how magnetism can defy the force of gravity.

This science fair project idea investigates how the shape of an object affects drag.

Help your kindergarten scientist explore an important part of earth science: how soil retains water.

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

This activity is a fun way for your first grader to learn about how veggies help your body while being creative with art and drama. Here's how to get started.

In this activity, you'll send your kindergartener on a scavenger hunt to find sounds and create a sound recording. Here's how!

Plants and light seem to be good buddies, but how far does the friendship really go?

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

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

This balloon-powered car project is a great way for your kid to learn about energy and how it can be used efficiently.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

What's a crater, and how does it happen? Here's a kindergarten experiment with safe, nontoxic ingredients.

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

What is surface tension? Kids will discover how water-skating insects use surface tension to keep from sinking by making a model water walker.

Water can go from solid to liquid to gas...but how does popcorn go from kernel to snack? Invite your first grade scientist to find out.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

In this fun activity, kids practice measurement and boost fine motor skills as they learn all about how fossils form and even make a few of their own!

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

Do this activity to help your kids see how seeds contain "baby" versions of big plant stems, roots, and leaves.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

Wiggly worms are known for staying buried in the soil, but how does that affect plants? Are earthworms and plant growth related?

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.

Here's a math, science, and social studies activity: help your kindergartener become a "coin archaeologist" by examining how different coins look and feel.