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This science fair project idea examines which type of insulation holds in the most heat.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

This science fair project idea provides evidence that air is everywhere and takes up space.

Explore scientific concepts with this experiment that introduces kids to the scientific method!

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

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

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

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

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

Science fair project which teaches you about the principles of physics within a vacuum by creating a vacuum chamber.

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!

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

This science fair project idea explores the egg's thin membrane.

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

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

The objective of this science fair project idea is to examine light refraction as it passes through liquid crystals.

Create safe lightning for kids! They'll learn how to make lightning at home with this fun science fair project idea illustrating static charges and grounding.

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.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

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

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

Make your own greenhouse - out of a balloon! Your child will learn how greenhouses work as they plant radish seeds and watch them grow.

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.