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.

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

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!

Using simple materials found around your home, you can reinforce the static electricity concept by helping your child build a simple device with zapping power!

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.

Help your child create a working lung model that fills with air just like the lungs inside of his own chest when he breathes.

Check out this mind-blowing experiment in which a hard-boiled egg will fit through an impossibly small opening with the help of only a few matches!

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.

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

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.