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Help your child create a working lung model that fills with air just like the lungs inside of his own chest when he breathes.

Here's a fun activity that will have your child deciphering directions for sandwich making, and learning about sequence along the way!

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

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.

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

Are you looking for a new way to help your fourth grader celebrate New Year's Day? Try this Flash Back Book!

These flying potato poppers make a cool sound, create a celebratory mood, and they can teach your child about the power of air pressure.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

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.

Fly into some rainy day fun with a cardboard airplane project. Making paper airplanes is fun, but you can add a new twist by using recycled materials instead.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

Crowned with orange cream cheese frosting and studded with chocolate chips, these pumpkin muffins make a delicious fall treat.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Try this chemistry experiment with your curious kid and get some "shocking" results!

This activity is a great way to engage learners in Earth Day celebrations while cultivating skills around nonfiction comprehension and research writing.

Here's a math activity that uses coin riddles to help your third-grader improve his coin-counting and logical thinking skills.

Create your very own Sleep Book filled with a menagerie of made-up nonsense creatures and discover how different animals catch some zzz's.

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

Be active while learning about American history with this twist on the classic running game "Capture the Flag."

Hone your child's skills of observation and take a look at forensic science for an interesting afternoon of exploration and detective work!

Find out which kind of bubble wrap fares best when put in impact.