How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

Use applied math to model orbital eccentricity in this cool science fair project for 7th grade.

This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

This science fair project idea tests the efficacy of both synthetic and natural antibiotics.

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.

An home science experiment for older students that teaches about the science behind heat.

We all know that the Moon has different phases, but it can be hard to figure out why. Try this activity to see how the Moon's phases really work.

Travel back to the Jurassic age with this creative dinosaur activity that would make a great addition to any wall or fridge.

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

Get your child math and science savvy with this fun outdoor classification game. Using chalk, your child will classify what she sees in the natural world.

Crystals are a very special structure. In this third grade activity, your child will learn how to grow salt crystals.

This experiment will investigate whether reward or punishment is more apt to motivate people.

In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

How do the phases of the Moon and gravity cause spring tides and neap tides? Does the Sun play a role in the tides? Figure it out in this fun science project!

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

In this science fair project, young children observe, record, and create collections of shapes in their world and increase their powers of observation.

Are you able to endure long periods of exercise? Find out if snorers can exercise longer than non-snorers.

What's the difference between centripetal and centrifugal force? Students find out by seeing both in action as they conduct this experiment.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

Check out this free high school science fair project to explore the physics of the Coriolis effect with a homemade Foucault Pendulum.

Science fair project which teaches you about the principles of physics within a vacuum by creating a vacuum chamber.

Would your child like to learn about a hidden world? All she needs to do is open her box of markers!

In this simple circular motion experiment, you'll observe tangential velocity and learn about how acceleration and centripetal force affect an object.

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

This science fair project explains the process of how the lungs expand and contract with the help of the diaphragm.

Encourage your child to jump into sea creature science by creating her own colorful "socktopus" sculpture.