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?

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

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

This science fair project idea demonstrates that plants give off water.

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

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

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

Find out whether we can create motion in a dish and as a result, create a wonderful and colorful show.

In this project children practice the scientific method while playing with puffy paint.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

This science experiment has students test whether a snail moves faster on concrete or dirt.

Make your own helicopter using a paper clip and a sheet of paper. Hold the spinner up in the air, let it go, and watch it spin gracefully to the ground.

This engaging project encourages young children to practice and refine the important scientific skills of sorting and classification.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

Your child will do a fun science experiment using soap and pepper flakes to help understand the concepts of water molecules and the surface tension of water.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

Encourage a group of third graders to play this fun game of Whistle Hide-and-Seek as a warm-up to get them prepared for finding a "lost" camper.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

What's a crater, and how does it happen? Here's a kindergarten experiment with safe, nontoxic ingredients.

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Engineers in training can get started with this simple wheel-and-axle construction activity.

This homemade parachute toy is incredibly easy to build. Plus, it gives kids an excuse to investigate and experiment...the backbone of kindergarten science.

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

Create a brush pile to help wintering wildlife stay warm and cozy through the winter.