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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.

Decomposition Rates of Biodegradable Materials

How do organic materials become soil? This science experiment measures what materials biodegrade.

Dig This: Biodegradation

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Magnet Experiment: Are Two Magnets Twice as Strong as One?

This project compares the strength of one, two, and three-ply toilet paper.

The Relationship Between Toilet Paper Ply and Strength

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

Compost Ingredients

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

Design Challenge: Making a Catapult

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.

Principles of Air Pressure

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

Growing Bacteria

Kids make a paperclip perform an act of magnetic levitation and test how effective various materials are at magnetic shielding in this science fair project.

Magnetic Levitation

Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.

Understanding Absorption

The objective of this science fair project is to experiment with balancing everyday objects and observing the the effects of gravity on materials.

Balancing Act: How does Gravity Affect Balance?

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

Bouncy Balls

Use this fossils worksheet to help a child learn about life on earth.  Your child will learn about evolution and extinction, and also form a hypothesis.

Fossils Worksheets: Dig It! #2

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 Limewater Carbon Dioxide Test

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!

Tensile Strength Test

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

How to Make a Lemon Battery

Get your students to be builders and create structures with a variety of materials. Students will have the opportunity to be creative, cooperate in groups, and discuss their experience.


Structure Building Challenge

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

What Attracts Fruit Flies?

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!

Jane Goodall and Nature Journaling

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

Color Changing Milk Experiment

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

Which Plants Can Resist Walnut Tree Allelopathy?

Is your child baffled by the scientific method? Dr. McSquare is here to help! Learn the steps by helping the doctor organize his lab reports.

Sorting Out the Scientific Method #2

In this open-ended activity, students will be given a small quantity of three types of materials and asked to design a prototype for &ldquo;something that will improve the school.&rdquo;

Design Challenge: Improve the School

This classic children&#39;s game-connecting two cups with a string-demonstrates sound&#39;s ability to travel through air vs through a solid.

The Speed of Sound on a String

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Popcorn Pumice: Exploring Different Rock Densities

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

Bouncing Ball Physics: What is Elasticity?

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets&#39; relative size!

Scale Model of the Solar System

Windmills have been around for generations to grind food and create energy. During this challenge, students will use various materials and put their engineering skills to work by creating their own windmills.

Wacky Windmill Challenge

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

Composting Food Scraps

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

Apple Allelopathy: Accelerating the Ripening Process

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