Demonstrate how to tell the age of an egg without having to crack it open.

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

The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.

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.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?

Find out which type of sponge holds the most water.

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

In this science experiment, do tensile strength test on fishing line, a strand of hair, a rubber band, and any other materials you're curious about!

This science fair project idea investigates whether plants can survive being frozen.

This science experiment has students test whether a snail moves faster on concrete or dirt.

In this science fair project, students focus sunlight with a magnifying glass and trap shorter waves to melt ice.

This science fair project will help students learn about non-vascular plants, such as mosses.

Find out whether we can create motion in a dish and as a result, create a wonderful and colorful show.

Do different types of oil mix or stack? Find out in this science fair project idea!

This science fair project idea explores whether talking to a plant will help it grow.

In this project, a magnet is used to collect iron from breakfast cereals.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

The project determines which laundry detergent is best for cleaning clothes.

People have favorite flavors, but what about ants? Which ant food is the most popular?

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

This project examines whether people's taste perception is influenced by what they see.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

This science fair project idea investigates how the shape of an object affects drag.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

This experiment tests which gender is better at catching how a magician performs his tricks.

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