For easy instant purchase, scroll down to the bottom of this page.

Know your dough! Working with coins is a great way to gain a variety of math skills, including addition, skip-counting, problem-solving and more. If you're a parent or teacher, you'll want to give kids actual coins to practice with—they make great manipulatives. And there are lots of real-world opportunities for making change.

Readeez Money Math contains three distinct, mutually reinforcing components: Video, Audio and E-book.

The songs:

"The Value of a Dollar" presents ways of making change for a dollar using quarters, dimes, nickels and pennies. It also provides a few alternate permutations (there are 293 in all, if you include half-dollar and dollar coins).

Penny, nickel, dime and quarter: four of the stars from "The Value Of A Dollar"

"Penny, You're The One" includes penny-equivalents for a nickel, dime, quarter and dollar. Also counsels youngsters to "save your pennies and your fortune has begun."

"Nickelish" includes skip-counting by fives to one hundred. And while frugality is important (see above), Isabel claims she's going to share her nickels with her friends.

"Dime and Dime Again" features skip-counting by tens to one hundred. The repeated line "ten pennies equal a dime" will help kids remember this indisputable fact.

"Quarterrific" establishes that quarters are worth 25 cents each and gives cent-equivalents for one, two, three and four quarters. Also advises listeners to "start with the quarters" when counting a mixed group of coins.

The super-catchy "Quarterrific" shows how to count by 25, and gives this helpful tip for counting mixed coins.

"Quarterrific," like all of the Money Math songs, makes learning facts about U.S. currency a breeze.

The Money Math Folderful contains:

• One video file (.m4v format, approx. 7:40)
• Five MP3 files (unprotected)
• 1 full-color eBook (PDF form; printable at 8.5 x 11)
• Artwork for the MP3 files