This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

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

This science fair idea project identifies the active ingredients in soap and experiments with the properties of soap.

Make sourdough bread...and learn some colonial history and modern science in the process!

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

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 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.

It's food. It's Thanksgiving tradition. And guess what: Cranberry Sauce is also science! Try our simple recipe/experiment.

This science fair project idea examines liquids of different densities.

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

This science fair project idea investigates how color affects temperature.

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

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

This science fair project idea produces varying pitches of sound.

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

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 deals with the qualities of shade on a sunny day.

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

This science fair project idea researches the effects of acid rain on plant growth.

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

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.

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

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.