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

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.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

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

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

Have your child kick off their summer vacation by making a miniature water slide!

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

In this design challenge, your child will make a bottle rocket using typical household items.

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

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

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

Along with being an interesting science activity, dehydrated strawberries are also tasty â and healthy!

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.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

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

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.

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

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!

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

Dinosaurs were huge creatures that left behind huge footprints that lasted for millions of years. In this science fair project, kids learn how dinosaur tracks were left behind!

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

This project examines whether playing music during class helps students learn or if it distracts students from learning.

In this activity, your child will transform an egg into a glowing, bouncy "ball" that they can play with.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

In this design challenge, your child will create a parachute for a small toy using typical household items.

In this science fair project, young children observe, record, and create collections of shapes in their world and increase their powers of observation.

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

Can you fool your eyes and your brain with an optical illusion? The purpose of this science fair project is to demonstrate various kinds of optical illusions.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.