Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

Is it a square or a circle? See if you can trick your friends with this zany science project!

This science fair project idea examines the reason boats are shaped and engineered.

Discover whether cold or hot water from the faucet will boil faster on the stove.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

This classic children's game demonstrates how sound travels through air vs. through a solid.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

Reinforce your child’s understanding of the alphabet by helping them construct all of the letters using pipe cleaners.

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.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

In this activity, students will think about the form and function of household objects as they compare and contrast kitchen serving spoons of various sizes and designs.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!