Evan and his younger sister, Jesse, react very differently to the news that they will be in the same class for fourth grade and as the end of summer approaches, they battle it out through lemonade stands, each trying to be the first to earn 100 dollars. Includes mathematical calculations and tips for running a successful lemonade stand.

When the owner of Treasures of Time agrees to hold a fossilized shark's tooth for him for one week, Freddy must think of a way to earn the fifty dollar price.

When Mallory's mother refuses to buy her a purse, Mallory tries a series of businesses in order to make money and buy it herself.

Summer vacation in their small Maine town does not look too promising until twelve-year-old Gina and four of her friends make a pact to become millionaires before school starts in September.

Ten-year-old Beans Curry, a member of the Keepsies, the best marble playing gang in Depression-era Key West, Florida, engages in various schemes to earn money while "New Dealers" from Washington, D.C., arrive to turn run down Key West into a tourist resort.

All cars get dirty sometime. Why not be there to make some money when cleaning time comes around. Young business people will find out about the importance of making a plan, getting the word out, and hiring help. A car wash is one of the simplest businesses out there. Young people interested in running a car wash can set attainable goals and reap the rewards, which is money!

Looking after an eccentric scientist's greenhouse doesn't seem any stranger than the other odd jobs taken by Mozie and his partner Battie--until Mozie discovers a large, mummy-shaped pod on one of the plants.

Although many things go wrong when Froggy decides to make money by setting up a lemonade stand, he still has fun with his friends.

"Life in middle school is finally starting to seem bearable-until Rafe spots his grandmother standing on the free-meal line at the local soup kitchen. In order to help bring in more money, Rafe concocts a brilliant plan-a dog-walking business that soon turns into a huge money-making neighborhood empire"--

Eleven-year-old Otto wants a dog, and his older sister Lexi wants a cat, so their mother suggests that whoever can raise enough money to pay for their pet can choose--and so the competition begins.