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.

"Robbie Reynolds isn't just a genius. He's a super SUPER genius! But he doesn't have the cash to fund his ultimate (and top secret) project. That's why he's opening a lemonade stand. Not just any lemonade stand: this one is state of the art, and his automatista can make you any flavor of lemonade your heart desires! Bacon, salsa, potato salad, dirty diaper--anything you want. Unfortunately, Robbie isn't the only one in the Lemonade Hustle. Daphne...