The Dewey Decimal system is a way of sorting nonfiction books. I don't expect my students to memorize specific numbers; that's what the online catalog is for. I do, however, want them to understand how certain topics go together. At least according to how Mr. Dewey thought they did.
Each table of fourth graders got a stack of books from a "hundreds." They had to work together to figure out how the subjects could be classified under one major label. Can you solve the puzzles?