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?

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

How do organic materials become soil? This science experiment measures what materials biodegrade.

The moon doesn't produce its own light, so why can we see it shining in the sky? Learn about reflection and planetshine in this fun and easy science project!

Explore aromas with your child and help boost her brain power with some fun and interactive science activities.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

Here's a pressed leaf card project that puts science and writing together for your second grader.

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

This science fair project explains the process of how the lungs expand and contract with the help of the diaphragm.

It's easier than you think to make homemade play dough -- just a few pantry staples makes a natural version of the toy that kids have loved for generations.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

The fish most kids see is usually filleted, and it's hard to see how it came from a lake or sea. This cool gyotaku activity blends life science with art!

Protozoa and ciliate and amoeba, oh my! The objective of this science fair project is for students to use a microscope and identify microscopic life.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

This science fair project idea explores whether talking to a plant will help it grow.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

This science fair project idea explores whether color affects a person's emotional state.

Your child grows a green thumb and flowers with this seed planting activity that also celebrates the 100th day of school!

Discover flight initiation distance as you play around in the park with this fun bird watching project!

Popsicles aren't just for the summertime, this activity takes cold and turns it into a creative and tasty science experiment.

You don't need to head to the Arctic to experiment with life in an igloo. Learners can build their own ice igloo at home from water and empty milk containers.

Teach your child how butter is created by shaking up cream the old-fashioned way.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

Here's a first grade ladybug game that explores how air can move solid objects, and adds some measurement practice, too. Play, learn, and enjoy!

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Here's a fun activity that will have your child researching, collecting, and charting plant specimens from the neighborhood.