Faced with a dull summer in the city, Jane, Mark, Katharine, and Martha suddenly find themselves involved in a series of extraordinary adventures after Jane discovers an ordinary-looking coin that seems to grant wishes.

Introduces the concept of money along with the values of different coins.

Briefly describes the process by which American coins and paper money are made.

Surveys the history of coin minting in the United States, explains what factors determine the value of collectible coins, and offers ways to start a collection.

"Aiden helps his little brother Mason make change at a yard sale so that he can buy a new video game, which they will then share"--