Peg + Cat: The Lemonade ProblemBy: Jennifer Oxley, Billy Aronson Series: Peg + Cat When life gives them a problem to solve, Peg and Cat make lemonade and get a lesson in bartering in a refreshing math adventure. Its a hot day, so what could be cooler than setting up a lemonade stand? When Peg needs some marbles to keep her special marble company, she and Cat decide to sell lemonade in exchange for ten marbles a cup. But the Teens have other ideas. But just one cup for ten marbles?
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