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This science fair project idea identifies trees using a dichotomous key.

Show your fifth grade scientist how to create a siphon using two buckets, plastic tubing, and water. Watch her astonishment as the water travels uphill!

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

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

This project compares the strength of one, two, and three-ply toilet paper.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

Conduct a simple science experiment to see if flowers from your garden pass the acid-base indicator test with this exciting chemistry activity.

The objective of this science fair project idea is to examine light refraction as it passes through liquid crystals.

This science fair project idea produces sounds by creating vibrations using different objects.

In this project students experiment with making music using only glasses of water.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

Amaze your kids by separating a salt and pepper mixture using an "electric spoon" charged with wool.

In this science fair project you will make a model of a cell membrane using very simple material.

Construct and experiment with a periscope using reflected light rays to gather an image.

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

Science fair project in which you will start a fire from scratch without using matches or a lighter.

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

Recreate the fantastic phenomena of solar eclipses with your child using just a flashlight, a quarter, and her very own face!

Got a birdwatcher on your hands? Bring the birds to your backyard by making a zany bird feeder using an orange and some string.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

Learn to solve a crime scene investigation using an important forensics tool: oblique lighting.

By using static electricity generated from their body, a child can cause a small fluorescent lamp bulb to light up!

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

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

In this game, players will learn interesting facts about animal adaption and practice them using a fun matching card game!

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.