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Packy the Packrat's mother has had enough! It's time that he sorts through his ever-growing collection of trinkets and puts them away. Told in rhyme, the text leads the reader to participate in the sorting process by categorizing Packy's piles of things according to like characteristics and attributes. The story promotes and reinforces analogous thinking—a critical thinking skill in math, science, and life. In the "For Creative Minds" education section at the back of the book, the reader can explore even more attributes and characteristics of objects, including color, size, texture, shape, and material.