Children will learn why and how to compost as they help with the process of filling their compost, turning it, and observing the changes that occur.

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

Learning about how plants grow is a building block in the early grades science curriculum. Put a fun twist on this life science concept with these cup monster friends!

This fun marbled paper craft uses things you're likely to have around your house, and it teaches kids some simple chemistry too!

Using a toy race car kids create a visual model of the Doppler Effect.

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

Perk up your front porch with this hanging vase craft, perfect for spring and for getting kids outdoors!

Has your child ever played weatherman? Try this science activity that lets kids try their hands at observing and predicting the weather.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

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

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

In this science fair project, kids will be able to see where germs reside on their hands while gaining insight into the benefits of thorough hand washing.

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

Create a soda bottle garden that defies gravity! This hanging terrarium is housed in a soda bottle and perfect for crafty kids with a growing green thumb.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

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.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

Creating a home for a toad is an easy and fun project for kids. Here's how to make your very own toad abode.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

Introduce your child to the importance of preserving the world's biodiversity by turning a lesson on endangered species into a fun game for the whole family.

Create a mini plant habitat with your kid to help teach him what it takes to make an ecosystem work.

Introduce your child to the amazing, almost magical phenomenon of static electricity!

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

What's a liquid? What's a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!