In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

Start your toy engines -- this is going to be a fast and friction-filled race!

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

This science fair project idea explores the egg's thin membrane.

This science fair project will help students learn about non-vascular plants, such as mosses.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

In this experiment we will be determining whether birds prefer certain colors of seed.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

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

Crystals are a very special structure. In this third grade activity, your child will learn how to grow salt crystals.

In this project students experiment with making music using only glasses of water.

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

Grow these wheatgrass and alfalfa friends and watch their hair spring up in just a couple days!

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

Jazz up your patio or backyard with hip and quirky planters made from simple Mason jars.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

In this project children practice the scientific method while playing with puffy paint.

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

Set your young chemist up for an afternoon of science-fueled magic with a deceptively simple activity starring baking soda and vinegar!

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!