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

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.

Give your smart second grader a rich challenge with this activity that combines graphing practice with money!

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

Here's a fun, geometric puzzle activity that will capture your child's interest and strengthen his number awareness and graphing skills.

Gather the neighborhood children together and practice graphing with this backyard tournament!

Liven up a lesson about graphing by helping your third grader compile a bar graph from his classmates' birthday data.

Okay, engaging in a graphing activity may sound ho-hum, but if you use fun data, it changes the picture entirely.

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.

Make a fun refrigerator graph with your first grader in order to help her develop those crucial graphing skills, while engaging with the whole family.

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.

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

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

Graph are a great way to organize information. Your child will get to practice graphing by creating a bar graph and a pictorial graph of her friend's names.

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!

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

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

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!

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

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.

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

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!