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This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

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.

Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

In this science fair project, students create their own miniature salt flats at home.

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

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.

In this design challenge, your child will make a bottle rocket using typical household items.

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

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

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.

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!

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

Take a look at forensic science with your child. She'll learn how to take a shoe impression, just like the detectives do!

In this science fair project, students use the streak test to tell minerals apart from each other.

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

In this fun activity, your child will create their very own solar oven to bake s'mores!

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

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.

Learn about different fern fronds with your third grader as you create lacy, natural decorations on your Easter eggs this year.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

Construct and experiment with a periscope using reflected light rays to gather an image.