This science project teaches students to classify different shapes of leaves.

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.

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

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

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

This science fair project idea explores how much force is needed to move a lever at different distances from the fulcrum.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

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

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.

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

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

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 is a fun and inexpensive project and it's a great way for your child to build basic geometry skills, like shape recognition and pattern/angle familiarity.

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

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?

Will the shape of an ice cube impact how fast the ice melts?

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