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

This is a fun and inexpensive project and it's a great way for your child to build basic geometry skills, like shape recognition and pattern/angle familiarity.

Help your child explore chromatography, which is the process of separating colors or pigments, and create a neat art project in the process!

Learn about the role of Earth's rotation on the Coriolis Effect and hurricanes in this science project. Model the Coriolis Effect on a hurricane's direction.

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

In this project, different brands of microwave popcorn are tested and compared.

Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!

Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.

Help your kindergarten scientist predict and observe as she explores the science of smell...and have a great time doing it, too.

Make your own greenhouse - out of a balloon! Your child will learn how greenhouses work as they plant radish seeds and watch them grow.

This science fair project idea identifies trees using a dichotomous key.

Learn all about balance and motion as your child designs a corn maze!

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

Hold a magnet marathon! Explore the power of magnets with your kindergartener in this entertaining and simple science game.

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

The objective of this science fair project is to study the photosynthesis process and demonstrate the important role that leaves play in the process.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

In this fun guessing game, your child uses his sense of smell and taste to figure out what is in the container. Here's how to play:

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!

Determine which kind of rock (igneous, sedimentary, metamorphic) has the greatest reservoir capacity, which is the ability to hold the most oil and natural gas.

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

Teach your first grade scientist the difference between liquids and solids using maple syrup.

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

This science fair project idea examines how well individuals can remember a story they were told and how accurately they pass that story along.

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

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.