Check out this cool science fair project on identifying rocks and minerals for kids.

In this investigation, three different juices are tested to determine which juice contains the greatest amount of vitamin C.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

Introduce your child to preliminary science concepts by challenging them to do this fun and simple cloud observation activity.

Science fair project which teaches you about the principles of physics within a vacuum by creating a vacuum chamber.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

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

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

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

In this open-ended activity, students will be given a small quantity of three types of materials and asked to design a prototype for “something that will improve the school.”

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

This science fair project idea determines which method of hand cleansing is the most effective.

In this activity, your child will be challenged to build a tall tower out of building bricks! The instructions include questions prompts to guide students through the design challenge.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

Discover flight initiation distance as you play around in the park with this fun bird watching project!

Science fair project that determines whether mass and weight are the same or different.

In this cool experiment, learn how to find specific gravity of minerals using liquids of different densities to see which substances and items sink and float.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

Learn whether writing things down really makes things easier to remember.

In this activity, students will be challenged to describe and count the ways a toy moves from one position on a grid to another.

Find out whether matte or shiny nail polish lasts longer.

This science fair project idea investigates the difference in reaction times between boys and girls.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.