Like HowStuffWorks on Facebook!

Number Activities for Kids


Double Up
Fractions are easy to understand when you play this water measuring game.
Fractions are easy to understand when you play this water measuring game.
©2007 Publications International, Ltd.

You'll get a watery grasp on fractions when you learn to "double up." This activity for kids teaches a basic principle of math in a fun and hands-on way.

You start with a bucket of water and a measuring cup; then fill 'er up ... and then fill 'er up again! And again. And again. Here's how it works:

What You'll Need

Measuring cups

Bucket

Water

Paper

Pen or pencil

How to Play "Double Up"

Step 1: Use a measuring cup to fill a bucket with water. Start with 1/4 cup.

Step 2: Keep track of how many 1/4 cups it takes to fill your bucket to the brim.

Step 3: Write the number on your paper.

Step 4: Now dump your bucket (in a plugged sink to recycle the water), and fill it up again, this time using a 1/2-cup measure.

How many dips of the 1/2 cup did it take to fill the bucket this time? Exactly half as many? If not, you spilled.

Step 5: Try it again with a 1-cup measure.

Ever toss a coin and wonder whether it would come up heads or tails? Keep reading to learn about probability.

For more great math exercises and math instruction, check out:


More to Explore