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

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

Find out whether packaged seeds actually do expire in this new science fair project idea.

Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

Take a closer look at the soil that surrounds us, and give your child a lesson in Geology 101!

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

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.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

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.

This science fair project teaches students the differences between fruits and vegetables.

Test your friends to find out if you can replicate the placebo effect's incredible results.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

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.

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

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