This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

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.

This science fair project idea investigates whether plants can survive being frozen.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

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 icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

This science fair project teaches students about wilting and browning of salad greens.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

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

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

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

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

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

The goal of this project is to create an exciting topographical map out of dough.