Do you hate to waste energy? In this experiment, you will design a machine that is powered by the process known as energy transformation.

This fun middle school science fair project idea explores the process of respiration and determines whether boys and girls have the same lung capacity.

Introduce your fourth grader to the concepts of solstices by observing the length of her shadow on the shortest day of the year, compared to other solstices.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

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

Put a twist on traditional oil painting with this fun science activity that you and your first grader can do together.

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

Show your child how and why the microwave works, while demonstrating just how strangely foods can behave while inside the crazy cooker.

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

Do human lie detectors exist? Charge up your powers of observation to see if you can tell a lie from the truth.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

Examine the connection between temperature and chemiluminescence.

Determine the differences between various bicep exercises, both in terms of how much muscle exertion they create and how they affect your heart rate.

This science fair project idea discovers whether plants grow best in chemical fertilizer, organic fertilizer, or with no fertilizer at all.

The objective of this science fair project idea is to explore which brands of "anti-fade" shampoos work the best to keep hair color looking fresh.

Examine how the tire treads of a bicycle affect its rolling frictional force. Change tires, test speed performance on different terrains.