Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

Science fair project which determines whether it is numerically possible to be connected to every person on the earth within six degrees of separation.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

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

Protozoa and ciliate and amoeba, oh my! The objective of this science fair project is for students to use a microscope and identify microscopic life.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

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

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

In this project, different childproof containers are tested to see how childproof they really are.

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

Science fair project in which you will start a fire from scratch without using matches or a lighter.

Check out this science project idea to compare organic produce to non-organic produce and how preservatives in food extend the shelf life of goods.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

Science fair project that helps you better understand density by comparing the relative densities of cans of Coke and Diet Coke.

This science fair project idea studies which brand of wintergreen candy produces the most sparks in the dark.

Demonstrate how to tell the age of an egg without having to crack it open.

Find out whether optical mice are useful on all surfaces or if there are drawbacks to this supposedly superior solution to the traditional roller-ball mouse.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Construct batteries that make electricity from fruits with this fun science fair project.

Discover how and which salt melts ice the quickest.

In this project, a mnemonic is used to test how it increases memory.

This science fair project idea produces sounds by creating vibrations using different objects.

This science fair project idea explores whether cats can be trained in the same way that dogs can.

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

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

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

This basketball project explores the best way to make the perfect shot every time.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.