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

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

Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

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

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

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

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

Using a toy race car kids create a visual model of the Doppler Effect.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

In this awesome science fair project idea, kids will be attempting to pick up different objects using snail slime.

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

Gymnosperms are coniferous trees that reproduces using pine cones to spread seeds. Check out this simple pine cone experiment to learn about the process!

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

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

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

This project investigates the affect of storage temperature on microwave popcorn.

In this project children practice the scientific method while playing with puffy paint.

This science fair project idea determines what household items are good conductors of electricity.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

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

This science fair project idea demonstrates that plants give off water.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

This science fair project idea determines what household items are good conductors of electricity.

This study evaluates if electronic devices commonly found in most households emit radiation, and if they do, how much?

This science fair project idea investigates the hardness property of minerals.