This project compares the strength of one, two, and three-ply toilet paper.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

This project tests the hypothesis that dark colors absorb more heat than light colors.

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.

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

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

In this activity, your child will learn about a style of gardening that uses moss, also called "kokedama."

In this science project, the center of gravity is explored.

In this project, waves of vibrations are experimented with using water in glasses.

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

The project investigates how friction affects motion by using different surface textures.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

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.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

Make a DIY golf putter and design your own golf putting course in this 2nd-3rd grade arts and crafts/game activity.

This science fair project idea examines the reason boats are shaped and engineered.

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!