Learn how acid-base catalysis affects enzymes and enzymatic reactions in this science project.

This science fair project tested various nose cones to determine which would be the most ideal shape for propelling a water rocket.

This project examines whether sugar substitutes are as sweet as real sugar.

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

Your mission, if you choose to accept it, is to construct a parachute that will deliver an egg safely to the ground. Good luck!

This project explores the interaction between air pressure and playing surface in determining a basketballâs bounce.

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

This science fair project idea investigates how different disinfectants work in killing germs.

Explore the belief in astrology as a predictive system.

This science experiment explores why leaves change color in the fall and the role of photosynthesis in leaf coloration.

Learn about the Atwood Machine and Newton's 2nd Law with a pulley and masses of different weights in this physics science project.

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!

This project makes young children uniquely aware of their sense of touch and its ability to alone give them information about the world around 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!

The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.

Thoroughly research image search engines. Consider possible improvements for visual search engines. Help design better image-matching engines.

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.

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

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.

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

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.