The Number Devil: A Mathematical Adventure is a book for children and young adults that explores mathematics. It was originally written in in German by Hans Magnus Enzensberger. Il mago dei numeri by Hans M. Enzensberger, , available at Book Depository with free delivery worldwide. : Il mago dei numeri () by Hans Magnus Enzensberger and a great selection of similar New, Used and Collectible Books.

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See all free Kindle reading apps. Over the course of twelve dreams, the Number Devil teaches Robert mathematical principles. Einaudi Ragazzi 30 Jan. Although they praised its “attractive and imaginative fantasy ,” the two mathematicians found several issues. He also experiences recurring dreams —including falling down an endless slide or being eaten by a giant fish—but is interrupted from this sleep habit one night by a enzehsberger devil creature who introduces himself as the Number Devil.

The German author has since stated he will not write any more young adult’s books, but instead direct his effort towards poetry. Not all reviews were positive, however. Visit our Help Pages.

The Number Devil – Wikipedia

Here’s just the book for you”. Learn more about Amazon Prime. Product details Paperback Publisher: Bayerischer Rundfunk in German. From Wikipedia, the free encyclopedia.


The next night, the Number Devil emerges in a forest of trees shaped like “ones” and explains the necessity of the number zeronegative numbersand introduces hoppinga fictional term to describe exponentiation. Because he was displeased with the way mathematics was taught to students at school, the German author decided to pen a book that teaches mathematics in an innovative way.

Write a customer review. Credit offered by NewDay Ltd, over 18s only, subject to status. Not for a minute. For instance, exponentiation takes the term hoppingand the fictional term unreasonable numbers was coined for irrational numbers.

Later, on the fourth night, the Number Devil teaches Robert about rutabagasanother fictional term to depict square rootsat a beach. The Number Devil arranges Robert’s classmates in multiple ways, teaches him about permutationsand what the Number Devil calls vroom numbers factorials.

The book ends with Robert in class using his newfound mathematical knowledge.

Il mago dei numeri

Although there are many Number Devils from Nuumeri HeavenRobert only knows him as the Number Devil before learning of his actual name, Teplotaxl, later in the story. Amazon Business Service for business customers. Share your thoughts with other customers. On the first night, the Number Devil appears to Robert in an oversized world and introduces the number one.


Robert is a young boy nuemri suffers from mathematical anxiety due to his boredom in school. Archived from the original on 21 April Archived from the original on 4 April By the eleventh night, Robert has shown considerable increased interest in mathematics, but questions its validity, to which the Number Devil introduces the concept of mathematical proofsending with the Number Devil showing Robert a complicated proof of basic arithmetic. See our Returns Policy.

For a time after the fourth night, Robert cannot find the Number Devil in unmeri dreams; later, however, on the fifth night, Robert finds himself at a desert where the Number Devil teaches him about triangular numbers through the use of coconuts.

The Number Devil teaches Robert about natural numberswhich the Number Devil calls garden-variety numbersthe unusual characteristics of infiniteand infinite series. Mathematics fiction books Magk demons and devils Dreams in fiction Henry Holt and Company books books Mathematics education.

The book was met with mostly positive reviews from critics, approving its description of math while praising its simplicity.