the toothpaste millionaire (en Inglés)

* Dorothy Canfield Fisher Children s Book Award * In this award-winning story, two classmates set out to create affordable toothpaste and become accidental millionaires! Sixth-grader Rufus Mayflower is betting that he can make a whole gallon of toothpaste for the same price as one tube from the store. There s just one problem, he has to solve real-life mathematical equations first! With help from his good friend Kate Mackinstrey, can these two entrepreneurs keep up with the high demand for their popular product? Beloved children s author Jean Merrill introduces readers to the ins and outs of a budding business, from costs to profits, in this exciting tale about perseverance, ingenuity, and underdogs.