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.

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

Help your child make a beautiful homemade sandcastle that will last!

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

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

The possibilities are endless with this fun Halloween-themed STEM activity! With simple supplies, your child will experiment, adapt, and use their creativity while they build structures using different specifications.

Is your child a nature nut with an eye for creative, green-friendly projects? Introduce them to this amazing DIY bird feeder!

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

How powerful is the reaction between baking soda and vinegar? Find out here!

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

This weather spinner will improve observation skills by encouraging children to examine and track weather details and patterns.

There are hundreds of properties in rocks which you can describe, so get your geology goggles on and get ready to rock your child's science skills.

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

This experiment that explores water and air pressure will amaze your fifth grader as it appears that a single card is holding water in an upside-down glass.

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.

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

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.