In this science fair project you will make a model of a cell membrane using very simple material.

Invigorate your fourth grader's mind by helping him turn his room into a woven masterpiece using various lengths of material.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

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

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.

Want to reuse materials that would otherwise get tossed in the trash? Show your third grader how to get crafty with old newspaper and fabric.

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

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

Make a homemade doll out of recycled materials, similar to dolls made by pioneer children.

Discover the science behind materials that absorb heat, and materials that don't, by constructing this cork trivet for your dinner table.

Create a chunky, textured, tactile giraffe collage that is cute enough to pet! This is a great way to recycle old arts and crafts materials.

A scarecrow Halloween craft featuring recycled materials.

In this activity, learners will discover how to make a basic water filtration system using common materials found around the house or outside.

Celebrate the blooming season with your kid by showing him how to make a magical spring mosaic out of all natural materials!

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.

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

Make beautiful print block art with your kids using recycled materials.

Make your own Matryoshka out of simple craft materials in this easy how-to!

Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.

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

Thiscuddly stuffed animal is made from just a few materials, including your recycled stockings.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

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

Instead of buying new sunglasses this summer, why not use recycled materials to make some of your own?

Using simple materials, children will create a movement card game that the whole family can play together.

Create this homemade slinky snake from recycled materials. It can move and slither about like the real thing!

Create a one-of-a-kind lunchbox with your second grader using recycled materials and some down home ingenuity!

Give some of your local ladybugs a warm place to stay for the winter by making a ladybug home with recycled materials.