Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

This science fair project idea determines which method of hand cleansing is the most effective.

This science project teaches students to classify different shapes of leaves.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

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

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.

This project determines what category of person is most likely to be ticklish.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

The objective of this science fair project is to experiment with balancing everyday objects and observing the the effects of gravity on materials.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

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

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

This science fair project teaches students about wilting and browning of salad greens.

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

Kids learn about examples of mechanical weathering and conduct an experiment with seeds and plaster in this cool geology science fair project idea.