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What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

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

Construct batteries that make electricity from fruits with this fun science fair project.

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

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

Young physicists will wrestle with a discrepant event: the Hammer Ruler Trick. They'll make some inferences about torque, balance, and center of gravity.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

What is mulch? Kids will provide soil with a wet blanket of mulch and see if that helps keep drought-stricken soil damp.

Try hammering some plants with your kids to teach them a valuable lesson in flower science while making beautiful artwork in the process!

Along with being an interesting science activity, dehydrated strawberries are also tasty â and healthy!

This science fair project idea explores the different properties & interactions of sugar molecules.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

Your child will learn science and make a fun new malleable toy with this balloon sandbag science experiment.

Throughout history, people have used song as a teaching and memory tool. This project explores whether song improves a person's ability to retain information.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

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

Which do you prefer: real or artificial? Try this sweet little taste experiment to help your kids develop a better awareness of the food they consume.

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

Conduct a simple science experiment to see if flowers from your garden pass the acid-base indicator test with this exciting chemistry activity.

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.

Many ancient cultures used the rising or setting sun to create calendars. Observe the setting sun once a week to come up with your own solar calendar!

Science fair project which determines whether it is numerically possible to be connected to every person on the earth within six degrees of separation.

In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

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

Check out this fun and easy science fair project idea on germination of a seed and learn to identify exterior and interior parts of a bean seed.