This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

This biodiversity project examines the biodiversity in your own backyard.

Test whether plants can grow without sunlight and water.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

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

Science fair project which teaches you how to make your own homemade glue by combing curdled milk with baking soda.

Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.

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

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

Learn about the effect of artificial light on plant growth versus natural sunlight and delve into some biology and botany concepts in this science project.

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

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.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

Let your kid experiment with textures among fabric and other materials that are smooth, rough, soft, or slippery—and then they'll make a texture book!

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Here is a kindergarten activity that blends art and science by using magnets, paint, and objects found around the house to create a picture.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

Find out whether putting something on top of a plant will inhibit its growth.

Help children understand the power of germs and the importance of hand washing with this visual activity that introduces the concept of scientific inquiry.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

The purpose of this science fair project is to build a basic radio.

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

This science fair project idea explores which fruit molds the fastest.