This science fair project idea explores what it takes to create a biosphere, or a self-sustaining ecosystem.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

Uh-oh! Is that a pill sitting on the counter or a piece of candy?

Research Earthship buildings. Draft a unique architectural design that repurposes used, discarded radial tires. Build scale model of structure.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

Demonstrate which cooking method gets rid of the most fat.

Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

Check out this fun high school science fair project idea to identify features of a mushroom and learn how do humans use fungi to their benefit?

Science fair project which determines which colors of light allow plants to produce the most chlorophyll. How are color and light related to each other?

Practice math facts with your third grader was never so simple! This activity makes addition, subtraction, multiplication, and even division a lot more fun!

Study how we perceive color by exploring optical illusions such as pointillism, digital images, and Ishihara tests.

This science project challenges students to take learned information about weather and climate control and apply it to come up with creative ideas of their own.

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

Scavenger Hunt! Check out this fun science fair project idea to explore the difference between opaque, translucent, and transparent objects around your house.

Discover how and which salt melts ice the quickest.

Design a hearing protection device to protect their ears from loud noises. Examine the properties of current protective hearing devices, materials.

This experiment investigates whether left-handed test subjects have better memories than right-handed participants.

Research and understand basic computer science. Build a simple computer, following instructions found online. Design a new or improved feature.

Science fair project that explores the natural process of limestone formation.

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

This science fair idea is a great way for kids to explore static electricity. Kids will give a comb a static charge and watch as it separates pepper from salt.

This fun outdoor game will help your child develop her addition and subtraction skills and teach her basic arithmetic while keeping her active.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

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

In this science fair project, kids will be able to see where germs reside on their hands while gaining insight into the benefits of thorough hand washing.

Can you fool your eyes and your brain with an optical illusion? The purpose of this science fair project is to demonstrate various kinds of optical illusions.

This science fair project idea demonstrates the process of land erosion.

Create equations in this strategic math card game. Your second or third grader can practice addition, subtraction, multiplication, and division in a new way!