The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

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

Throughout history, people have used song as a teaching and memory tool. This project explores whether song improves a person's ability to retain information.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

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

In this science fair project, students use the streak test to tell minerals apart from each other.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

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

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Students explore hot desert plant adaptations in this cool science fair project by observing how these organisms prevent excessive transpiration.

Find out whether a longer airplane will fly farther or a wider paper airplane.

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.

Dive into the world of cooking oil and smoke points to discover just how fast some oils start smoking.

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

The purpose of this study is to determine if people can tell the difference between organic and conventional food from looking at, smelling and tasting it.

This science fair project idea explores the egg's thin membrane.

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

This science project teaches students to classify different shapes of leaves.

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

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