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.

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 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.

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

Test whether plants can grow without sunlight and water.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

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

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

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

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

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

Explore if planting seeds in a certain direction will affect how fast it germinates.

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.

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

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

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.

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.

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

This science experiment tests if dog saliva can really help heal wounds.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

This project determines what category of person is most likely to be ticklish.

Have you ever noticed the ridges on a dog's nose? In this project, we take several dogs' nose prints and discover just how unique they are!

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.