The objective of this free science fair project is to examine the way in which the phases of the moon affect circadian patterns in mammals.

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

This cool electricity project teaches kids how connecting batteries in series vs. parallel circuits can contribute to different levels of voltage and amperage.

Science fair project that teaches you key definitions of molecular science, and how different isotopes of an element affect the relative atomic mass.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Science fair project that demonstrates the different phases of the moon by physically representing them with construction paper and a shoebox

This balloon-powered car project is a great way for your kid to learn about energy and how it can be used efficiently.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

Your kid will be captivated as she watches liquids change color before her very eyes during this fun science project that introduces some chemistry basics.

This project investigates several commercially decaffeinated tea types (black, green, oolong, white) for the presence of detectable traces of caffeine.

Check out this cool science project idea to explore the differences in feeding behaviors of birds and if other species of birds also have color preferences.

Here's a great project to get your child on the right track towards writing well thought-out proposals.

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

In this fun science fair project idea learn about the multiple sources of radio waves and fin out how difficult it is to block them.

This science fair project idea explores whether it is easier to balance on a narrow ledge or on a rope.

This science fair project idea explores whether there is a connection to the color a person wears and the way their emotional state is perceived by others.

Science fair project that creates a pamphlet to help others learn about Epilepsy, its causes, symptoms and treatments.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

Demonstrate and describe acid-base reactions of baking soda and baking powder by making pancakes.

Science fair project which compares the rates of photosynthesis for various light sources. Which type of light will be best for photosynthesis and why?

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

Science fair project in which you will stage an election campaign to determine whether people are more swayed by a positive ad or negative ad.

Fudge is one of very few desserts people make at home that is actually crystalline. What happens when the fudge crystallizes at different temperatures?

In this science fair project, students will use methylene blue to study the presence of aerobic bacteria in milk.

Is the birthday paradox really a paradox, or just an intriguing problem that defies intuition? Find out with this birthday paradox science fair project.

Here's an experiment that will have your child experimenting with cake ingredients to learn about the chemical reactions that happen when a cake's in the oven.

More height, more steep, more speed! This science project investigates whether there is a correlation between the height of the roller coaster and the slope.

Free science fair project idea that measures change in flexibility with age, using a variety of flexibility tests like Sit & Reach.

This science fair project tested various nose cones to determine which would be the most ideal shape for propelling a water rocket.

This science fair project focuses on the use of the enzyme amylase found in human saliva to break down starch into sugar.