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Three children, Tom, Hannah, and Shadowchild, who represents the reader, are made to guess, using the concept of binary logic, the color of the hats on their heads. An introduction to logical thinking and mathematical problem-solving.
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Featured Series
2 primary books3 released booksBeautiful Math is a 3-book series with 2 primary works first released in 1982 with contributions by Mitsumasa Anno and Akihiro Nozaki.