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

This science fair project idea experiments with spinning color wheels and optical illusions.

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

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

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

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

Learn about the effect of artificial light on plant growth versus natural sunlight and delve into some biology and botany concepts in this science project.

This project explores ways to prevent static electrical shocks.

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

Could there be toxic chemicals lurking in the cupboards and closets of your home?

Science fair project which teaches you how to make your own homemade glue by combing curdled milk with baking soda.

This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

This science fair project idea investigates whether plants can survive being frozen.

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

Students explore hot desert plant adaptations in this cool science fair project by observing how these organisms prevent excessive transpiration.

This science fair project idea explores whether mint, known for its âcooling sensationâ really does lower temperatures.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

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

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

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

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

This science research project challenges students to think of more effective lobster farming methods.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

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