This science fair project idea produces varying pitches of sound.

This science fair project idea examines the reason boats are shaped and engineered.

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.

This science fair project idea compares biodiversity between drops of water.

This science fair project idea explores the different properties of matter.

This science fair project idea identifies trees using a dichotomous key.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

In this science fair project, students make their own rain gauge to measure rainfall.

This science fair project will help students learn about non-vascular plants, such as mosses.

This science fair project idea investigates how the shape of an object affects drag.

This science fair project idea discovers which brand of bubblegum produces the largest bubbles.

This science fair project idea investigates how magnetism can defy the force of gravity.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

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

This science fair project idea experiments with spinning color wheels and optical illusions.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

This science fair project idea determines the most effective method of preserving food.

This science fair project idea examines whether boys and girls differ in reflexes.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

Do different types of oil mix or stack? Find out in this science fair project idea!

This science fair project idea explores substances that cause a bubble to last longer.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

In this science fair project, students create their own miniature salt flats at home.

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

This science fair project idea explores whether white light can be separated into different colors.

Think you can blow up a balloon without using your mouth? This isn't just a cool trick, it's also a great way to introduce chemistry and biology concepts.

This science fair project idea provides evidence that air is everywhere and takes up space.

This science fair project idea investigates if fats add to the flavor of food.