Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

Compare the whitening abilities of four different brands of whitening toothpaste to see which one whitens the fastest and which one whitens the most.

This science fair project determines which of two chemical agents can be used to release the drug (tea) from hydrogel crystals.

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

This science fair project idea determines which method of hand cleansing is the most effective.

This cool air pressure demonstration has kids break a ruler using only a newspaper and atmospheric pressure.

Encourage a group of third graders to play this fun game of Whistle Hide-and-Seek as a warm-up to get them prepared for finding a "lost" camper.

Science fair project that examines various techniques for removing wrinkles from polyester garments to understand why polyester garments become wrinkled.

Make your own helicopter using a paper clip and a sheet of paper. Hold the spinner up in the air, let it go, and watch it spin gracefully to the ground.

This experiment investigates if small changes in your diet can alter your basal body temperature.

In this activity, your child will be challenged to build a tall tower out of building bricks! The instructions include questions prompts to guide students through the design challenge.

Check out this fun science fair project idea to learn about seismic waves and how fast they travel during an earthquake.

You don't need to wait for rain to see a rainbow. Make one yourself, and teach your child about light and weather in the process.

This science project teaches students to classify different shapes of leaves.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

This experiment explores how microwave radiation affects fungi, bacteria, and plant life.

Combine science with reading and art to help your first grader create an attractive holiday gift for a beloved friend or relative.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

Explore properties of liquids and how temperature and salinity effect surface tension of liquids in this fun- filled science fair project idea.

Science fair project idea helps conceptualize probability. Compare probabilities and outcomes of cards drawn from a standard playing deck.