This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

This science fair project idea determines which brand of batteries have the longest life.

The project idea is to understand why chocolate turns white and to determine the fastest way that this process can occur.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

There is debate about whether chalkboards or whiteboards are better. This experiment explores which leads to better retention of visually-displayed information.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

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

This experiment tests which gender is better at catching how a magician performs his tricks.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?

What causes sound? Here's a simple science experiment that adds a visual element to the science of sound to help kids better understand this tricky concept.

Play Rock Tic-Tac-Toe, the perfect outdoor game for all ages. Help your child develop thinking skills and get away from the TV!

This science fair project idea teaches kids the different functions of a leaf.

This project investigates an interesting question: If one learns to write backwards, is one also able to read backwards?

This science fair project determines how age affects the speed that someone can change the focus of their eyes between near and far sightedness.

This science fair project idea determines which colors are more difficult to read at a distance.

Are red apples really sweeter than green apples? The objective of this science fair project is to test the theory with quantitative evidence.

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

The project idea is to establish whether it is easier to memorize words with fewer syllables and to understand how memory works.

This project explores ways to prevent static electrical shocks.

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

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

This science fair project idea lets you build your own wind tunnel and tests different models of paper airplane.

Here's a pressed leaf card project that puts science and writing together for your second grader.

Here's a science activity to help your child investigate how seeds are designed to travel.

Learn about endothermic and exothermic reactions and energy exchange by experimenting with temperature change in chemical reactions.

The objective of this science project is to investigate why NASA has been using aerogel for the Stardust Project for collecting gas and dust from comets.

The objective of this science fair project is the compare the rate and efficiency of disaccharide and polysaccharide fermentation by yeast.