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This science fair project idea studies which brand of wintergreen candy produces the most sparks in the dark.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

This science fair project idea studies which kind of rock (sedimentary, igneous, or metamorphic) is most damaged by frozen water.

Find out whether optical mice are useful on all surfaces or if there are drawbacks to this supposedly superior solution to the traditional roller-ball mouse.

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

This play-activity causes young children to focus on and become more aware of their sense of hearing and the power of their ears.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

This science fair project idea attempts to train a worm to complete a simple maze in order to find out if worms can learn and remember.

This science fair project teaches students about wilting and browning of salad greens.

This science project teaches students about organic farming and the benefits and disadvantages of commercial plant food.

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

Explore how sound waves are reflected and absorbed by producing echoes. Analyze which locations produce echoes.

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

This science fair project idea discovers if an artificial light source will yield the same plant health and growth rates as light from the sun.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

This science fair project investigates why the number of visible stars changes from place to place.

Science fair project that uses muriatic acid to develop fingerprints that would otherwise be invisible.

This project makes young children uniquely aware of their sense of touch and its ability to alone give them information about the world around them.

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

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

Discover that the absorbency of fabrics depend largely on the shape and structure of the individual fibers that make up the fabric.

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