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

This science fair project idea tests whether tall people have the ability to swim faster than people of average and shorter heights.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

This experiment investigates the relationship between the temperature of a candle and its burn rate.

This project explores what happens to a rubber band when it is heated and cooled.

Take to the air with science by experimenting with helicopter seeds right in your own backyard!

This science fair project idea investigates how color affects temperature.

Make stunning pendulum waves and learn the math behind the patterns generated with this cool and easy science project.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.

This science fair project explores whether musicians are better than non-musicians at distinguishing and understanding speech in noisy environments

This snowman's not abominable, he's adorable! Your child can bring her very own snowman to life while practicing how to create texture.

Get a cool science project idea on a photovoltaic cell and explore the various factors that affect the energy output of the photovoltaic cell.

This experiment strives to determine if tracking of conservation habits will lead to reductions in a family's electricity and water bills.

Encourage your child to jump into sea creature science by creating her own colorful "socktopus" sculpture.

Pair a planetarium visit with this fun art project that mimics the look of far-off galaxies.

Want to spark your third grader's interest in gardening? Help him make popsicle stick fairies to decorate an enchanting garden oasis.

Determine how good we are at direct and indirect observation.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

In this math and science activity, help your middleschooler learn about proportion and measurement with just her shadow and a tape measure!

In this science experiment, do tensile strength test on fishing line, a strand of hair, a rubber band, and any other materials you're curious about!

Science fair project which helps you determine your latitude by using an astrolabe, which measures the angle between the North Star and the horizon.

Does nail polish really slow the growth of nails? Explore in this science fair project idea.

Use sticks and stones to create create an outdoor version of tic-tac-toe!

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

This project uses toy cars to determine how friction and gravity affect cars and braking.

Discover whether ants are more attracted to natural cane sugar or artificial sweeteners.

Use applied math to model orbital eccentricity in this cool science fair project for 7th grade.

Bring the fun of gardening indoors! By stuffing a simple pair of pantyhose with a few grass seeds on top, your child can grow her very own plant pet.