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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?

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

Magma Lamp: What Happens When a Less-Dense Fluid Interacts with a Denser One?

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

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

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

Let your kid experiment with textures among fabric and other materials that are smooth, rough, soft, or slippery—and then they'll make a texture book!

Different Textures

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

Understanding Absorption

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

The Relationship Between Toilet Paper Ply and Strength

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

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

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

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

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?

For your budding first grade scientist, all you need is some simple, natural materials to create an amazing ant farm. Here's how to get started.

Make Your Own Ant Farm

These "Dig It!" worksheets not only teach about life on earth, they teach the scientific method as well.

Fossil Worksheet for Kids: Dig It! #1

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

What Is a Compound Microscope?

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

Mental Mix Up: Experimenting with Your Ability to Focus

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

Most Popular Soda

Find out whether a longer airplane will fly farther or a wider paper airplane.

Does A Longer Paper Airplane Fly Farther than a Wide One?

In this activity, students will be challenged to describe and count the ways a toy moves from one position on a grid to another.

Toys on the Grid

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

Breaking Rocks

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

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Factors Affecting Seed Germination

Set up a fun guessing game for your curious kindergartener, one that will test her ability to use all five of her senses.

Hidden Objects

Camouflage is one of the most important animal adaptations in the African savanna biome. Kids create their own camouflage with this fun science fair project.

African Savanna Animal Adaptations: Camouflage

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

Third-Class Levers in the Human Body

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