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Cookie catastrophe! In this project you will determine if different types of cookie sheets can cause cookies to bake differently.

Let your second grader pay homage to an ancient Olympic tradition with this modern day Olympic wreath!

Help your child make an attractive frozen holiday ornament to hang outside during winter months.

This experiment will explore the best way to create a perfect soft-boiled egg.

Science fair project that demonstrates how stalagmites and stalactites are formed.

Got a birdwatcher on your hands? Bring the birds to your backyard by making a zany bird feeder using an orange and some string.

Determine whether the relationship between a personâs armspan and height are genetic.

Create uphill flow of water by using a siphon. Create vacuum by suctioning one end of tube, and submerge it under water. Watch the direction the water travels.

Can you win a staring contest? Would your performance be influenced by your eyesight? Find out in this science fair project idea!

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

This classic children's game demonstrates how sound travels through air vs. through a solid.

Teach your fifth grader about the wonders of wind by making and observing this winter wind chime.

Tin can phones offer something modern versions don't—a fun project to make with a friend, and a dramatic illustration of vibration and sound waves.

This project examines the phenomenon of using a mirror to trick a person's brain into experiencing sensations in body parts not actually affected.

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

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

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

Slime mold is no longer classified as fungi! So what is it? In this cool science fair project, learn how to grow slime mold and explore its behavior.

In this cool sound resonance experiment, learn about frequency and pitch, and use a tuning fork to calculate sound velocity in air.

Your child will decorate a headband with any bugs they can think of, then they'll add antennae so they can pretend to be a bug!

Learn how to make a periscope with this cool engineering science fair project idea, and learn about optics to learn how a periscope works.

Your fourth grader will be astonished to discover the significance and intricacies of his spine as he builds a model of a human vertebral column.

The objective of this experiment is to evaluate whether funny advertisements are more or less effective than serious advertisements.

Many ancient cultures used the rising or setting sun to create calendars. Observe the setting sun once a week to come up with your own solar calendar!

Examine whether males or females are more likely to have a higher center of gravity.

Here's a fun activity to reinforce the physics concept of stored energy for your middle schooler.

In this activity, your child will learn about a style of gardening that uses moss, also called "kokedama."

Here's a science experiment that gives your kids a chance to see how fire needs oxygen to burn, with a little math and writing practice thrown in.

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

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