We all know that the Moon has different phases, but it can be hard to figure out why. Try this activity to see how the Moon's phases really work.

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

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

Determine if gender affects the ability to identify different smells.

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

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

Is it magic? No...it's the amazing, gravity-defying capillary action experiment! Kids will love this dramatic and enlightening science fair project.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

This project examines whether people's taste perception is influenced by what they see.

This science fair project idea determines what household items are good conductors of electricity.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

In this design challenge, your child will make a bottle rocket using typical household items.

This science fair project idea determines what household items are good conductors of electricity.

In this design challenge, your child will create a parachute for a small toy using typical household items.

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

This Valentine's Day, pair up science and crafting with this simple crystal formation project that's sure to bring a little love into your home.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

The purpose of this study is to determine if people can tell the difference between organic and conventional food from looking at, smelling and tasting it.

Teach your child how butter is created by shaking up cream the old-fashioned way.

This science project explores the concept of being opaque or clear. Can you make something clear opaque? Or something opaque clear?

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

This science fair project idea investigates the difference in reaction times between boys and girls.

Let your young scientist explore a brave new world of sound with an experiment that just requires a handful of common household items.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

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

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

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.

This science fair project idea examines which type of insulation holds in the most heat.

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.