Your third grader will delight in learning about sound waves as he observes the different sounds created by tapping on glasses with varying amounts of water.

Determine how wind speed affects the stability of a kite and the ease of getting it into the air.

Invite your third grader to do taste test science to observe how a strawberry tastes when it is paired with various condiments. The results may be surprising!

How does mold grow? Kids find out by testing different conditions to measure mold growth rate and learn about what factors cause mold to grow more quickly.

Save money by making compost! Use this science fair project idea to determine which composting methods best encourage decomposition of organic matter.

The objective of this project is to examine the ways in which a passive solar house may contribute to conservation of energy.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

This science fair project idea determines which flower lasts the longest.

Determine whether cats have dominant paws. Observe which paw cat uses to reach for treats, feather, and string. Calculate percentage for two paws.

The objective of this free science fair project is to examine the way in which the phases of the moon affect circadian patterns in mammals.

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

Encourage local wildlife to settle down in your backyard with this adorable bird nest craft.

Science fair project that determines the correlation between wind direction and subsequent weather patterns.

Encourage a group of third graders to play this fun game of Whistle Hide-and-Seek as a warm-up to get them prepared for finding a "lost" camper.

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

This middle school science fair project determines whether DNA is most easily extracted from under-ripe, ripe, or over-ripe strawberries.

The goal of this science fair project is to attempt to build a perpetual motion machine and analyze the Laws of Thermodynamics.

Science fair project which uses a camera to observe the surface of a balloon in the moment of its explosion.

Determine whether people can actually taste the difference between âhealthyâ cookies and the traditional version.

The goal of this science fair project was to evaluate the ElectroMagnetic Field produced by Radio Frequency Identification transmitters.

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

The purpose of this science fair project is to determine whether Green Bags, with or without refrigeration, are most effective in preserving food.

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

Learn about the factors that influence group conformity.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

A math project teaches students to use a clinometer to gauge the height of very tall objects like trees & to think of better ways to measure how high they are.

Science fair project which determines whether a person's taste in music is dictated by the key that the song is written in.