Demonstrate Newton's laws of motion by examining the relationship between mass, force, and acceleration during free-fall.

Looking for a fun way to encourage imaginative play? Try crafting these animal dice with your preschooler.

Determine how effective animal camouflage is by simulating it in an indoor and outdoor setting.

In this design thinking activity, your child will choose an animal to research, learn about the animal’s habitat, and then replicate the animal's habitat using household items.

Learn how different types of soil affect how animal tracks form in this experiment!

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.

The next time you and your fifth grader go on a hike, take along this key to figure out which common North American animal left a track along the river bank.

In this game, players will learn interesting facts about animal adaption and practice them using a fun matching card game!

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.

Check out this silly game that will put your kid's animal habitat knowledge (and acting skills) to the test.

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

This project determines whether hands-on practice, mental practice, or no practice leads to better shooting of free-throws.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

This science fair project researches the most effective method to cut an onion and stay tear-free.

Find out whether freezing or refrigerating destroys more bacteria. This is essential to consuming safe and germ-free food.

This project involves the development of a website using free software online to promote the value of science.

Free science fair project idea examining how different types of water affect plant germination and growth.

This free science fair project explores the "dirty" relationship between the presence of organic material in soil and water absorbency.

Do suds equal more clean or does a sud-free cleaning agent works just as well or even better?

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

Free science fair project idea that examines the impact of gravity on a dropped carton of eggs. Design a device to protect the eggs from cracking.

Check out this cool and free middle school science fair project idea on how to make a solar oven.

Free science fair project idea that examines air pollution in local environments. Particles are trapped by petroleum jelly on microscope slides.

Check out this free high school science fair project to explore the physics of the Coriolis effect with a homemade Foucault Pendulum.

Free science fair project idea that measures change in flexibility with age, using a variety of flexibility tests like Sit & Reach.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

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

Free science fair project idea that examines the ergonomics of your environment. Redesign your living space to be better suited to your lifestyle.

The objective of this free science fair project is to examine the way in which the phases of the moon affect circadian patterns in mammals.