Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

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

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

This science fair project examines how seeds hitchhike on animals and clothing.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

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

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

In this activity your child will create their very own marble maze!

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

This science experiment has students test whether a snail moves faster on concrete or dirt.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

In this activity, your child will be challenged to make a tower using paper cups.

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

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

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.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.