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Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

This science fair project idea explores whether talking to a plant will help it grow.

The objective of this science fair project it to determine whether adding ethanol alcohol to gasoline slows the run time of a motor.

In this science fair project, young children observe, record, and create collections of shapes in their world and increase their powers of observation.

This project compares the national anthems of several different countries to determine if there is a correlation between tempo and a country's latitude.

In this experiment we use Scotch Guard to make sand that resists water.

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

Dig into the physics of pool to explore some cool applied math and learn about what happens in an elastic collision of equal masses.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.

The Galileo inclined plane physics experiment was one of the first ways scientists calculated acceleration due to gravity. Do it yourself in this project!

By dropping a magnet through a copper tube, kids observe the cool (and bizarre) braking effect produced by the eddy currents predicted by Lenz's law.

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

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

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

This experiment researches if you gave different amounts of food to mosquito larvae would they grow faster or slower

Science fair project that determines the effect of concentrated mental effort on physical performance levels.

Kids learn about the color rendering index by finding the best lightning for makeup in this fun and original physics science fair project idea.

Measure the speed of the earth's rotation using protractors and meter sticks. This science fair project measures the angle of the sun in relation to earth.

Science fair project that determines whether moths are attracted to one color of light more than others.

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.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

What is surface tension? Kids will discover how water-skating insects use surface tension to keep from sinking by making a model water walker.

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

This baseball science fair project explores the concept of an object's center of percussion to determine if the "sweet spot" has a scientific basis.

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