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The project researches how lubricants affect the mechanical advantage of a pulley.

The objective of this science project is to determine whether a sweet tooth is most likely an inherited trait or a learned behavior.

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

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?

The objective of this science fair project is to determine whether there are gender differences when boys and girls view optical illusions.

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

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 optics-based science fair project idea teaches kids about real and virtual images with a mind-bending candle illusion inspired by Pepper's Ghost.

Check out this cool middle school science fair project idea to determine if shopping carts are really carriers of harmful bacteria.

Check out this fun science fair project idea to measure bacterial colonies from door handles and explore the effectiveness of different cleaning agents.

Demonstrate that insects observe colors and choose favorites. Place colored pieces of construction paper on a flat, glassy surface, observe bug preference.

Discover whether eating certain foods will make you smell (not only bad breath) but through skin cells.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

Find out the differences (if any) in the frequencies of voices produced from a computer, from a phone, and directly coming out of the voice box of a human.

Explore the effect of wind speed on the burning rate of a candle.

Demonstrate Newton's laws of motion by examining the relationship between mass, force, and acceleration during free-fall.

Help your fifth grader embrace the roots--literally--of Mother's Day by growing carnations to honor mothers in you family's history.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

Science fair project that uses iodine solution to demonstrate how starch is turned into sugar when it is chewed in the mouth.

How powerful is the reaction between baking soda and vinegar? Find out here!

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

Some fossils have been been preserved for billions of years! Help your kid understand how fossils are created and preserved with this crafty project.

In this activity, your child will learn about a style of gardening that uses moss, also called "kokedama."

Help your child plant a "tea garden": a garden made of herbs for making teas.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

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

This awesome diffraction grating experiment puts high school students' applied math skills to the test by having them calculate the wavelength of laser light.