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

This two-ingredient dough, sometimes called "moon sand," is a quick and cheap way to let kids explore their senses, build fine motor skills, and play.

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

Challenge your high school student to find the flaw in this short mathematical proof that one is equal to two.

Determines the extent that high school GPA predicts future income. Survey volunteers, divide GPA into 5 categories, compare income levels with GPA

Is exercise a cellular activity? Check out this fun science fair project idea to compare the carbon dioxide production before and after exercise.

Does your child need counting help? Here's a simple game that kids can do at home to help them practice counting to two-digit numbers.

In this simple and social activity, children use size comparison skills to find objects in nature that are bigger, smaller, longer, and shorter.

From how to make your own invitations to what games to play the day of, this guide has everything you need to make your graduate's day a time to remember.

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

Put a twist on traditional oil painting with this fun science activity that you and your first grader can do together.

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.

Help your first grade child figure out contractions and their original two words by playing this simple game, Contraction Concentration!

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

First grade math includes lots of work with two-digit numbers. Here's an activity to help kids practice recognizing and sequencing numbers from 1-30.

This activity with add some fun and education to long car trips. Perfect for family vacations!

Movement activities are crucial for developing minds and bodies. Animal movements, in particular, encourage children to think about their own body mechanics in comparison with animals they may have observed.

Determine the effect of homework on academic performance. Collect grade info at the end of a semester, determine correlation between grades, amount of homework

Show your fifth grade scientist how to create a siphon using two buckets, plastic tubing, and water. Watch her astonishment as the water travels uphill!

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

Create a tornado vortex in your kitchen in this 5th grade science experiment. All you need are two plastic bottles, duct tape, and a metal washer to begin.

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.

Boost your preschooler's attention to detail by getting her to explore the differences between two different pumpkins: large and small.

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

Introduce your fifth grader to the Kinara, part of the Kwanzaa tradition, by playing this fast-paced, two player game!

In this project, you will observe and record changes in sunspots over two weeks.

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

Help your third grader create a Venn diagram fantasy creature by combining two different creatures to create a fantasy creature based on their similarities.

Your second grader can honor two renowned U.S. Presidents--Abraham Lincoln and George Washington--by crafting larger-than-life pennies and quarters!