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Get a cool and easy science fair project idea which helps high school students in understanding concepts behind the working of a microphone.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

Water can go from solid to liquid to gas...but how does popcorn go from kernel to snack? Invite your first grade scientist to find out.

What does yeast eat? Sugar, of course. But yeast also has some powerful enemies in the form of antifungal agents! Kids test them out in this fun yeast lab.

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

This science fair project idea assesses the effect of music on work performance.

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

Put an oatmeal box, a flashlight, and some construction paper together and you have the makings of an incredibly cool bedroom planetarium!

Science fair project that determines whether spreading a moss soup over an area increases moss growth.

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

With some cookie dough and ordinary household objects, let your kindergartener explore how fossil imprints are made.

This science fair project idea investigates whether rocks containing geodes can be determined from the outside.

What is a series circuit and how does it work? Learn about voltage, electrical current, and resistors in this cool science experiment!

You and your child can create this beautiful butterfly mobile for hanging anywhere in the home (and learn about this magical creature while you're at it).

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

Looking for a way to help your teen explore the fun side of physics? How about a round of Saturday morning cartoons?

This science fair project examines how seeds hitchhike on animals and clothing.

This easy project for little hands uses mushroom spores to make an imprint of the mushroom, and the result is very beautiful.

This Mother's Day, mix in some fifth grade science learning to create this fabulous fudge!

Give your child a chance to experiment with how things grow. And throw in something extra to up the fun factor even more...her very own grass pet!

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

What is vegetative reproduction? Find out how you can clone plants and regrow cabbage from a stem in this cool experiment!

Kids will learn how to clean fish tank the natural way. Add catfish to the tank and see if your water gets cleaner.

These flying potato poppers make a cool sound, create a celebratory mood, and they can teach your child about the power of air pressure.

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!