Looking for a project on machines? Get a fun elementary school science fair project idea to design a compound machine using your knowledge of simple machines.

Kids will make a homemade electroscope and explain how it detects static charges through induction in this fun science fair project idea.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

Check out this free high school science fair project to explore the physics of the Coriolis effect with a homemade Foucault Pendulum.

This science fair project idea explores how water and ice can change the form of rocks.

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

Determine if each hemisphere specializes in dealing with specific functions. Include illustrations of the brain, it hemispheres.

Learn how acid-base catalysis affects enzymes and enzymatic reactions in this science project.

Learn how to convert gravitational potential energy into mechanical energy in this fun science fair project idea.

This science fair project idea explores the egg's thin membrane.

Determine how effective animal camouflage is by simulating it in an indoor and outdoor setting.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

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

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

Learn about the growing app design field by designing a new or improved app for smartphones.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

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

In this Bernoulli's Principle experiment, you'll learn how an increase in the speed of a fluid, like air, decreases pressure.

This science experiment explores why leaves change color in the fall and the role of photosynthesis in leaf coloration.

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

Examine the impact of insecticides on plant growth.

Determine the effect of homework on academic performance. Collect grade info at the end of a semester, determine correlation between grades, amount of homework

Find out whether freezing or refrigerating destroys more bacteria. This is essential to consuming safe and germ-free food.

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

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.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

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

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

Science fair project that compares leaf pigments of various tree species. Which tree species do you think will have the most pigments and why?

In this science fair project, students create their own miniature salt flats at home.