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

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

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

How do organic materials become soil? This science experiment measures what materials biodegrade.

This science fair project idea determines the most effective method of preserving food.

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

Find out whether packaged seeds actually do expire in this new science fair project idea.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

This science fair project idea determines if the color of light affects the growth of plants.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

Test whether plants can grow without sunlight and water.

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Find out whether putting something on top of a plant will inhibit its growth.

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

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