Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

Think you can blow up a balloon without using your mouth? This isn't just a cool trick, it's also a great way to introduce chemistry and biology concepts.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

Do different types of oil mix or stack? Find out in this science fair project idea!

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

Is it a square or a circle? See if you can trick your friends with this zany science project!

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

In this activity your child will create their very own marble maze!

Discover whether cold or hot water from the faucet will boil faster on the stove.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

This science exploration lets your first grader see how eggs can provide a perfect environment for a living, growing creature.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

Test whether plants can grow without sunlight and water.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

Before Twitter, birds were the ones tweeting, not humans. Have your child discover the magical sounds of nature while recording birds around his neighborhood!

Learn all about balance and motion as your child designs a corn maze!

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

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

This project determines what category of person is most likely to be ticklish.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.