Kids build a rainforest food web to explore trophic levels in this cool science fair project for 4th grade.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

How do crystals form? In this science fair project, students will use three different saturated solutions to see how different minerals form crystals over time.

This social science experiment assesses whether the timing of peak mental performance shifts from afternoon to morning as we age.

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

This science fair project idea explores whether the types and brands of faucet filters are relevant to their performance.

Check out this cool science fair idea on why hard fruits become soft and learn how to compare the sugar content between ripe and unripe fruits.

Science fair project that explores the variety of webs that spiders weave and collect specimens for identification.

This science fair project idea examines the distance a person travels on an average day and to relate that to an understanding of the size of the Earth.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

This project will explore whether people are emotionally susceptible to suggestions of both humor and sorrow.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

Learn about what happens to a current-carrying wire in a magnetic field in this cool electromagnetism experiment!

This science fair project idea investigates the difference in reaction times between boys and girls.

This science fair project idea produces varying pitches of sound.

Can the force of air be used to propel a vehicle? This science experiment provides step-by-step instructions to help you answer this question.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

Explore the properties of light and color using photographic filters. Take pictures of color spectrum, compare results of different filters.

Explore the negative and positive consequences of stereotypes.

This science fair project examines how carnivorous plants digest insects, and whether the plant can use nitrogen in the soil to compensate for lack of insects.

Explore the best way to store popcorn kernels. It examines the impact of moisture and temperature on unpopped kernels.

Do human lie detectors exist? Charge up your powers of observation to see if you can tell a lie from the truth.

Can cells be frozen? This science fair project provides information to answer this question.

Science fair project that identifies the nature of ionic and covalent bonds and determines how ionic and covalent compounds differ.

Check out this fun science project idea on ecological succession and learn the main difference between primary and secondary succession.

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!

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

Science fair project that determines what neurons are, what they do and compiles this vital information in an illustrated book.