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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.

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

Determine if left-handed people have faster response times.

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

In this science fair project, students examine how the flow rate in a stream affects the growth of aquatic plants.

Check out this fun science project idea to measure the amount of vitamin C in ripe, half-ripe, unripe and stored oranges.

Learn the anatomical and physiological differences between central and peripheral visual systems.

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

The goal of this science fair project is to evaluate the effect of heat on sound wave frequency.

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

This science fair project idea shows kids how to grow mold and whether mold grows better in dry or moist conditions.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

Science fair project that determines what percentage of air is made up of oxygen by examining the chemical reaction between oxygen and rust.

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

Alive or not? This yeast experiment you can conduct with your little scientist explores the answer to this timeless question.

How does mold grow? Kids find out by testing different conditions to measure mold growth rate and learn about what factors cause mold to grow more quickly.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

In this cool experiment, learn about the forces of resistance in a liquid and race marbles in a cylinder to find out which fluids have a high viscosity.

Do dogs understand English? Kids will find out with one of our favorite dog science fair projects that tests how dogs process human language and other cues.

How does bleach kill bacteria? Kids find out in this impressive bacteria science fair project by testing different concentrations on a safe strain of E. coli.

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

The objective of this science fair project is to determine the rate at which participants can respond to different patterns.

The objective of this science fair project idea is to find out whether refrigerating cosmetics will extend their shelf-life and longevity.

More height, more steep, more speed! This science project investigates whether there is a correlation between the height of the roller coaster and the slope.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

This experiment evaluates if a noisy environment makes it harder for test subjects to perform tasks that require hand-eye coordination.