In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

Your child will learn science and make a fun new malleable toy with this balloon sandbag science experiment.

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

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

This science fair project idea investigates how color affects temperature.

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

This science fair project examines how seeds hitchhike on animals and clothing.

This science fair project idea produces varying pitches of sound.

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

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

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 discovers which brand of bubblegum produces the largest bubbles.

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

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.

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.