In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

Enjoy those warm spring and summer nights with your child while teaching some basic astronomy at the same time.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

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

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

Try this activity with your child to explore what happens to rain (and the living things that need it) when it becomes polluted.

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

Have you ever noticed the ridges on a dog's nose? In this project, we take several dogs' nose prints and discover just how unique they are!

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

Get your child outside to observe the clouds, and get a fun exercise in science, writing, and arts and crafts! Here's how.

Teach your child about healthy foods and how to make a meal that is good for them with this fun activity that you both can do together.

Grow borax crystals and get your child excited about Earth science with this crafty science experiment.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

Determine if gender affects the ability to identify different smells.

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.

It's easier than you think to make homemade play dough -- just a few pantry staples makes a natural version of the toy that kids have loved for generations.

Alive or not? This yeast experiment you can conduct with your little scientist explores the answer to this timeless question.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

Reuse and recycle cardboard tubes to make spooky spiders, kooky caterpillars, wacky worms, and more.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

This basketball project explores the best way to make the perfect shot every time.