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.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

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

This study evaluates if electronic devices commonly found in most households emit radiation, and if they do, how much?

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

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

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

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

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

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

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

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.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

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.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

The goal of this project is to create an exciting topographical map out of dough.

This science fair project idea determines what household items are good conductors of electricity.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.