Race to double numbers in this competitive card game. Try one-digit or two-digit numbers, or more!

In this activity, your child will reference Matisse and also learn about patterns.

Your kindergartener will learn basic math concepts and create a beautiful keepsake with this African flag reference book.

Help your child learn how to protect the environment by creating a useful reference for the family with this recycling poster.

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.

Make an "I'm NOT Bored" book filled with your child's favorite activities, to reference the next time she has the urge to declare, "I'm bored."

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.

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

Sharing can be a challenge, and division doubly so! Practice halving numbers in this competitive card game.

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

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

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

Engage your third-grader in this version of the classic game and she will get lots of practice using mental math to solve addition and subtraction problems.

This game reinforces the meaning of the term "multiples" and is fast enough to hold the attention of your fourth-grader.

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

Here's how to create an easy travel checkers board that you are your child can enjoy together using simple materials.

Help your second grader craft some lovely, personalized Valentine's Day cards--out of kitchen materials!

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.

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

Help your child use recycled materials, a little imagination and some writing skills to build his very own recycled creature.

This variation of Duck, Duck, Goose is played in pairs, which means a lot more activity for participants!

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

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

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.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

Recycle old materials to create a fun, brain-teasing maze toy that also strengthens your child's math reasoning skills.

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