Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!

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

The goal of this project is to create an exciting topographical map out of dough.

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

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

In this design challenge, your child will make a bottle rocket using typical household items.

This science fair project idea investigates how magnetism can defy the force of gravity.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

Determine if gender affects the ability to identify different smells.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

Are you ready to be a detective for science? Then get out your magnifying glass and start studying fingerprints!

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.

This science fair project idea determines what household items are good conductors of electricity.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

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.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

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

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

Using a toy race car kids create a visual model of the Doppler Effect.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.