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

Kids will discover the meat science behind the meat they eat, and find out how to use safe chemistry to make meat more tender.

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

The purpose of this science fair project is to build a basic radio.

This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.

This science fair project idea investigates how color affects temperature.

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 explores which fruit molds the fastest.

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

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

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.

Does your middle school teenager have good reflexes? Gauge his reaction time in this science and math activity that requires only a yardstick and a friend.

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.

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

Check out this cool science fair project on identifying rocks and minerals for kids.

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.

Science fair project that uses muriatic acid to develop fingerprints that would otherwise be invisible.

Science fair project that determines whether mass and weight are the same or different.

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.

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