Jacqueline may be foolish enough to swap the family cow for a magic bean. But, it would never occur to her to rob a giant of his treasures. Now she has two hungry families to feed. She must discover the true magic of the beans. Many of the mishaps in folktales could be remedied if the protagonists knew some scientific principles. Children like seeing familiar stories told with a twist. And they like science, when it is present as fun. This is the fourth book in the Science Folktales series.