qNonfiction math concepts are presented as mysteries for readers to solve. With the turn of a page, readers learn how to solve the true math mysteryq--Provided by publisher.aquot;Nonfiction math concepts are presented as mysteries for readers to solve. With the turn of a page, readers learn how to solve the true math mysteryaquot;--Provided by publisher.

Title | : | The Case of the Ad That Subtracts and Other True Math Mysteries for You to Solve |

Author | : | Danielle S. Hammelef |

Publisher | : | Capstone - 2012-01-01 |

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