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# Il mago dei numeri. Un libro da leggere prima di addormentarsi, dedicato a chi ha paura della matematica

Un diavoletto dai mille giochi di prestigio conduce Roberto, un ragazzino che odia la matematica perché insegnata male da un professore antipatico, alla scoperta del paese incantato dei numeri. E il mondo della matematica diventa fantasioso come una fiaba.

Paperback, 259 pages

Published
January 1st 2010
by Einaudi
(first published 1997)

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## Community Reviews

(showing
1-30
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3,000)

Oct 27, 2015
Kelly H. (Maybedog)
rated it
it was ok
·
review of another edition

Shelves:
abandoned,
what-middle-readers

Random math thinly disguised as a novel. I get what it's trying to do but it feels more like the kind of characters that kids' textbooks have to make the info more "fun." there isn't a plot here. But if it gets kid's reading about math then go go go. Plus, the illustrations are really cute.

Feb 24, 2016
Lance Greenfield
rated it
really liked it
·
review of another edition

Shelves:
comfort-reads

This book makes maths fun, even for those little people who believe it to be a laborious trudge through treacle. In fact, that would describe Robert, the main character in this book. He has been struggling with maths for as long as he can remember. One night, he dreams that he meets a little devil, The Number Devil, who teaches him, as he sleeps, all sorts of useful tricks with numbers.

When you enjoy something, and gain immediate benefit, you obviously learn more.

My Dad made all aspects of mathe ...more

When you enjoy something, and gain immediate benefit, you obviously learn more.

My Dad made all aspects of mathe ...more

Feb 29, 2016
Jose lana
rated it
really liked it
·
review of another edition

Shelves:
science,
mathematics

This book told as a 12 nights dream of a child with a mathematical devil is a serious attempt to prove that mathematics can be entertaining,interesting,beautiful and fun and not a boring,useless,ugly and hermetic subject.

It is aimed mainly to young teens,but is also enjoyable by adults that for some reason hate the maths or have a wrong concept of this field.

Is a tale where departing of elemental concepts as natural numbers,prime numbers,powers and square roots introduce more advanced concepts a ...more

It is aimed mainly to young teens,but is also enjoyable by adults that for some reason hate the maths or have a wrong concept of this field.

Is a tale where departing of elemental concepts as natural numbers,prime numbers,powers and square roots introduce more advanced concepts a ...more

Apr 06, 2013
Anne Hamilton
rated it
it was amazing
·
review of another edition

Shelves:
children,
golden-ratio

...more...But as he stood in front of his mirror in his pajamas, brushing his teeth, he felt something tickling his chest and looked down to see a tiny five-pointed star on a thin golden chain. He couldn't believe his eyes. This time his dream had come true! ...After he'd dressed, he took the chain off and stuck it in his pocket: he didn't want his mother asking silly questions. ...Where'd that star come from? she'd want to know the minute she saw it. Boys don't wear jewelry! ...How could he tell her

It talks about maths in a way that is as simple as 1+1=2.

I was way behind in maths going into high school, and I have learnt so much from this book in 1-2 months.

I learnt stuff like Fractions, Bonacci/Fibonacci numbers, Decimals, Factorial (Vroom!), Hopping numbers, Prima Donnas, and Triangle numbers.

My favorite was the "Hopping Numbers". I spent a good part of a day just writing them all down. I wrote down 55 hopping numbers, and the biggest one I did was 18,014,398,509,481,984, whic ...more

No creo que leer El diablo de los libros pueda hacer que un niño al que no le gusten las matemáticas empieza a apreciarlas, pero estoy convencido de que no era esa la intención del autor al escribir el libro, sino más bien crear una historia entretenida con las matemáticas como hilo argumental en la que se nos muestran curiosidades y aspectos llamativos de las mismas que puedan despertar posteriormente el interés de los chavales.

Me ha resultado muy curiosa ...more

I have read the book "The Number Devil" because my grandpa sent it to me from Japan in Japanese translation. The book was amazing. This book made me like math and this is when I first understood radicals and other mathematic things. I will tell you that, by the time you finish this book, you will think "Oh, math is so cool!".

Characters

In the book, Math Devil teaches math to this boy named Robert (Who hate Math),many interesting facts about math, and the secret be ...more

My impression was that the book got the formula all wrong. The story is nonsensical and tedious, so you're ready to get to the math. The math is then explained via conversation between the main character and the number devil, so you really have to reflect on the topics after each chapter to understand them. ...more

Feb 27, 2010
Steven
rated it
really liked it
·
review of another edition

Shelves:
advisory-2009-2010

I really enjoyed The Number Devil. I thought that it was a worthwhile book and if you are having trouble in math, it can really help you. I thought that the book was very good in its way of delivering the information. Robert, the main character, is always asleep when he is with the Number Devil and in his dream world, math is completely different from ours. One thing i didn't really like about the book is how they do not always use real math terms. They use words like coconuts and rutabagas and
...more

In the ...more

Ini bukan dongeng, bukan pula memoar. Tapi kejadian-kejadian yang ada dalam buku ini bisa saja Anda alami di kehidupan Anda....more

Perkenalkan Robert, seorang anak berumur 12 tahun yang sangat membenci matematika dan terutama guru matematikanya. Baginya angka-angka dan segala macam hitung-hitungan adalah hal yang menjemukan. Tapi, pandangannya tersebut perlahan-lahan berubah sejak bertemu Setan Angka dalam mimpinya. Dari malam ke malam Setan Angka mengajaknya bertualang menjelajahi dunia matematika. Se

Sapevo che la matematica può essere divertente (anche se i professori evitano accuratamente di farti conoscere questo lato) ma che fosse così spassosa, quello no, non l'avrei immaginato. Dodici notti, dodici sogni per insegnare a Roberto come funzionano le cose e che alla fine non è il caso di avere paura. Robero è fantastico! Il modo di rispondere, di fare, non sembra un bambino di 10 anni, come tralatro si evince anche dalla copertina (anche perchè esprimo qualche pe ...more

Robert, a boy who hates math and is frustrated because his teacher doesn't allow calculators, has strange dreams all the time. One night he dreams up a character called the Number Devil, who takes him away to a surreal world of numbers where Robert learns basic math concepts and a few handy shortcuts. After all, says the Num ...more

Some great (and advanced) mathematical ideas are presented in here. These include some ideas as young as Russel's Paradox or Countable Infinities. Others are much older (Pascal's Triangle and Diagonal length of squares). All of this told in a quiet, simple manner akin to Daniel Quinn's Ishmael - though a little more entertaining than that ...more

I am thanking my brother for lending me the book, this was a nice ride.

Apr 25, 2015
Zahra Dashti
rated it
really liked it
·
review of another edition

Shelves:
آنچه-داریم,
سایر

خیلی کتاب خوبی بود. اگه ریاضیات و بازی با اعداد و این تیپ چیزها رو دوست دارین بخونیدش. مخصوصا برای نوجوانها عالیه. دنیای زیبایی رو براشون از اعداد به تصویر می کشه و به شیوه شیرینی بهشون اطلاعات می ده در مورد علم اعداد و ریاضیات.

با اینکه از سن من گذشته بود وقتی خوندمش ، ازش خیلی لذت بردم!

با اینکه از سن من گذشته بود وقتی خوندمش ، ازش خیلی لذت بردم!

I'm not sure what to say about this one. Who would I recommend it to?

Not math people - The terminology will drive this reader crazy! The author took math terms and called them something else. For example, instead of "the square root of 9 equals 3," it was "the rutabaga of 9 equals 3." OOOOOOOOKKKKKKKKKKK!

Not non-math people - 1. With the strange verbiage, you won't be able to talk to other people, ...more

*The Phantom Tollbooth*but this book doesn't even come close to that level of whimsical profoundness. I was definitely disappointed. The encounters between the dreaming child Robert and the Number Devil quickly become repetitive and stale. The author is trying to make children realize for themselves that mathematics are beautiful but the execution of this goal is actually quite ordinary. This book is recommended for kids 10+ b ...more

The Number Devil, by Enzensberger, was a little less than lack luster book. While the idea of a story-like math book was intriguing, this novel felt flat and the story felt forced in. The flow of the book seemed choppy as it would jump from attempting to teach math, to quickly plugging in a character or setting trait. For students struggling with mathematics this novel would most likely leave them more confused with who, what and where, than it would teach them math.

This approach to teaching mat ...more

Although I think the book lacks a real plot, it does emphasize an overarching message that if a child takes the time ...more

topics | posts | views | last activity | |
---|---|---|---|---|

Math | 2 | 4 | Jul 25, 2015 08:23AM | |

An Excellent Book | 1 | 17 | Aug 22, 2008 07:00PM |

For more information, please see http://en.wikipedia.org/wiki/Hans_Mag...

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