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.

One way to "trick" your child into getting extra practice with one-step equations is to play a variation of the classic game, tic tac toe.

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

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.

In this activity, your child will experience multitasking, then mindfulness and compare the two in terms of productivity and calmness.

Young artists will combine two animals into one in this imaginative art-project-slash-game!

These easy-to-make felt friends are created by sewing two pieces of felt together with yarn and make great gifts for holidays such as Easter.

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.

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.

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.

Competitors go head-to-head only this time it's a race to figure out the lowest common multiple of two numbers; an important step to working with fractions!

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

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!

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

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.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

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