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296 pages paperback 2007

nonfiction mathematics middle grade informative inspiring lighthearted medium-paced
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320 pages hardcover 2007

nonfiction mathematics middle grade informative inspiring lighthearted medium-paced

320 pages 2007

nonfiction mathematics middle grade informative inspiring lighthearted medium-paced

294 pages 2007

nonfiction mathematics middle grade informative inspiring lighthearted medium-paced

320 pages digital 2007

nonfiction mathematics middle grade informative inspiring lighthearted medium-paced

296 pages 2007

nonfiction mathematics middle grade informative inspiring lighthearted medium-paced