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

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

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

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

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

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

Use two toilet paper rolls to make a pair of homemade binoculars and let the games begin. Here's how:

This recycled craft makes a great addition to the dress-up box and is a two-in-one activity and party favor for princess-themed birthday parties.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

Coil your daughter's two favorite colors into a wearable pendant with just a few scraps of felt!

Looking for something to do with all those plastic 2-liter bottles that seem to accumulate endlessly? Turn them into a unique mini birdbath.

Help your child get the hang of reading with this fun activity. Here's how to make a spinning phonics wheel out of two paper plates.

Transform a single sheet of card stock into a double-sided painting of opposites: on one side, a bright daytime landscape, on the other, a dusky evening scene.

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

All your preschooler needs to create a personalized Halloween memento is their two hands and some black paint.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

Teach your little scientist about the amazing powers of gravity by comparing the falling speeds of two yummy fruits

Help your child improve his coin counting skills in these two math games that have him race to reach $1.00.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

In this simple math activity, your young learner will compare two types of Valentine's Day candy using a Venn diagram.

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

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

Your child can make a sweet and savory spinach strawberry salad; two ingredients that come together for a light and fresh summer dish!

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

Here are two streamlined breakfast ideas so that mom not only gets a delicious breakfast for Mother's Day, but a clean kitchen too!