Teach your creative second grader about proportions, animals, and proper cutting methods with cucumber carving.

Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

Learn about lateral earthquake motion and its effect on high rise buildings in this simple 4th grade earth science experiment.

Learn with makes water molecules work with this fun and easy science activity!

In this activity your child will make a coiling snake out of simple household materials, and also find out why they coil.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

Your kid will delight in creating an extraterrestrial vehicle from goods found around the house. There's no telling where her imagination will go!

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

Find out whether matte or shiny nail polish lasts longer.

Will increasing the amount of salt in water effect how slow or fast the water freezes?

Young physicists will wrestle with a discrepant event: the Hammer Ruler Trick. They'll make some inferences about torque, balance, and center of gravity.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

Take advantage of the fact that ink and water don't mix and introduce your kid to suminagashi, a Japanese form of art.

This science fair project idea investigates if fats add to the flavor of food.

All you need are pencils, paper and some scissors to get started on this easy and fun game to review astronomy information, or other types of study concepts.

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

This clay "painting" activity encourages and supports creative development and critical thinking skills.

Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?

Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

Check out this cool science fair project idea to explore the risk of mechanical deterioration of artifacts placed in a storage box due to mold outbreaks.

In this activity, your child will make her own "quicksand" to better understand how a substance can be both fluid and solid at the same time.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

Find out whether a longer airplane will fly farther or a wider paper airplane.