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Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

Determine which kind of rock (igneous, sedimentary, metamorphic) has the greatest reservoir capacity, which is the ability to hold the most oil and natural gas.

Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?

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.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

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 idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

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.

Check out this fun and easy science fair project idea on germination of a seed and learn to identify exterior and interior parts of a bean seed.

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.

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

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

This experiment tests which gender is better at catching how a magician performs his tricks.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

Find out whether we can create motion in a dish and as a result, create a wonderful and colorful show.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

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

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

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

This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.

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

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

Construct and experiment with a periscope using reflected light rays to gather an image.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.