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

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

Science fair project which helps you determine your latitude by using an astrolabe, which measures the angle between the North Star and the horizon.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

In this fun activity, frozen cubes of paint provide your preschooler with a cool new way to paint a masterpiece.

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

First graders are learning basic addition and subtraction math facts. Practice in the sandbox with this fun outdoor math activity!

Learn how to make a periscope with this cool engineering science fair project idea, and learn about optics to learn how a periscope works.

It's a rare kid who doesn't like a sandbox. Next time you're out digging, build in some earth science, too.

This easy Halloween-themed science experiment for first-graders is perfect for chilly October afternoons or great as a Halloween party activity.

This science fair project idea demonstrates sonar mapping of the ocean floor.

Make a seed bomb and let your junior guerilla gardener spread flowers far and wide.

Make homemade lemonade in a baggie with your preschooler with this fun and easy recipe.

Do plants breathe? Not exactly. They do respire though! This activity will help your child with see that plants are producing the oxygen we need to survive.

Make a backbone model to explore human anatomy and life science.

Get your sense of humor ready for this fun science experiment that demonstrates the fundamental physics of air pressure.

This activity will introduce your child to the four different components of blood and give him a fun way to visualize its properties.

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?

What is a series circuit and how does it work? Learn about voltage, electrical current, and resistors in this cool science experiment!

In this physics project, you'll learn how to find the maximum height of a projectile using some math and trigonometry.

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

Teach your creative second grader about proportions, animals, and proper cutting methods with cucumber carving.

Along with being an interesting science activity, dehydrated strawberries are also tasty â and healthy!

Examine whether males or females are more likely to have a higher center of gravity.

Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.

Science fair project the demonstrates Newton's Third Law using a milk carton filled with water.

If your mom likes flowers, make her a sweet gift that she'll treasure with this fun craft, a pretty Pressed Flowers Card!

What's cooler than an explosion? Not much! This simple science experiment lets kids build their own pop rocket. So put on your safety goggles and let her rip.

Some fossils have been been preserved for billions of years! Help your kid understand how fossils are created and preserved with this crafty project.