This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

How do organic materials become soil? This science experiment measures what materials biodegrade.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Here's a household scavenger hunt that shows kids the natural sources behind everyday objects...and builds reading skills, too!

Use natural materials to try out a new kind of weaving. Your child will enjoy gathering their materials outside and then using them to create a piece of art!

Create a self-portrait from natural materials in this collage craft activity!

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

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

What better way to nurture your child's imagination than by making a fairy house out of materials found in nature!

Use reusable, recyclable materials--along with a dose of imagination--to build a castle with first grade geometrical forms.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.