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 science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

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

In this science fair project, young children observe, record, and create collections of shapes in their world and increase their powers of observation.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

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

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

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

This science fair project teaches students the differences between fruits and vegetables.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

Can you fool your eyes and your brain with an optical illusion? The purpose of this science fair project is to demonstrate various kinds of optical illusions.

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

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

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 learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

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

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.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

In this project children practice the scientific method while playing with puffy paint.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

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

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

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.