What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

Cleaning can be a chore, but not with this sudsy experiment!

Discover whether a metal will expand under hot water.

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

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

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?

Will increasing the amount of salt in water effect how slow or fast the water freezes?

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

This science fair project idea explores whether white light can be separated into different colors.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

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!

This project investigates the affect of storage temperature on microwave popcorn.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

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

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Climates with more snowfall have more coniferous forests and fewer deciduous ? Learn about how pine trees in a coniferous forest adapted to withstand snow.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

Explore if planting seeds in a certain direction will affect how fast it germinates.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

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.

The moon doesn't produce its own light, so why can we see it shining in the sky? Learn about reflection and planetshine in this fun and easy science project!

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

Find out whether a longer airplane will fly farther or a wider paper airplane.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.