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# Sayı Şeytanı

The international best-seller that makes mathematics a thrilling exploration.

In twelve dreams, Robert, a boy who hates math, meets a Number Devil, who leads him to discover the amazing world of numbers: infinite numbers, prime numbers, Fibonacci numbers, numbers that magically appear in triangles, and numbers that expand without . As we dream with him, we are taken further ...more

In twelve dreams, Robert, a boy who hates math, meets a Number Devil, who leads him to discover the amazing world of numbers: infinite numbers, prime numbers, Fibonacci numbers, numbers that magically appear in triangles, and numbers that expand without . As we dream with him, we are taken further ...more

Paperback, 200 pages

Published
1999
by Can Yayınları
(first published 1997)

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## Community Reviews

(showing
1-30
of
3,000)

Aug 18, 2012
Kelly H. (Maybedog)
rated it
2 of 5 stars
·
review of another edition

Shelves:
what-ya-and-children,
abandoned

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.

May 17, 2012
Lance Greenfield
rated it
4 of 5 stars
·
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

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

Apr 06, 2013
Anne Hamilton
rated it
5 of 5 stars
·
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

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

Aug 30, 2012
Ileen
rated it
3 of 5 stars
·
review of another edition

Shelves:
2010,
scrittori-tedeschi

Grazie mille Enzensberger!

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

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
4 of 5 stars
·
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

I would give this book 4 stars because it's a great book which is very educational. I think it would be great for ages 10-12. It really takes the topic of math and algebra and makes into something more interesting and informative at the same time.

This book is a bit corny,to be honest it really is sort of childish but that's what I found to make this book very interesting. It's about a boy who is having these nightmare's about math and this "number devil" appears and tries to h ...more

I am glad I read

*The Number Devil*. I even learned some words and problems that I never even solved before. A theme I acquired is that not even trying to do something that someone doesn't like also means being too lazy. Apparently, the main character just slacks off in class, staring into space. What was annoy ...more

Horor? Ya, dengan warna merah yang bernuansa seperti darah, cover dengan judul Setan Angka ini memang sempat membuatku berpikir, "Is that a horor fiction?"

Fiksi? That's true, but horror, absolutely NOT.

Hans Magnus menulis sebuah cerita fiksi tentang matematika. Ya, tentang hal yang kata sebagian orang merupakan pelajaran yang menyebalkan. Rupanya Hans ingin mengajak anak-anak di seluruh dunia yang tidak menyukai matematika menikmati ...more

**Author**: Hans Magnus Enzensberger

**Illustrator**: Rotraut Susanne Berner

**Translator**(German to English): Michael Henry Heim

**First Published**: 1997

For Christmas the 7yo was given the gift of maths, the magic of numbers from a much loved aunt.

Each Day Robert has a dream visit from the Red Devil where he is gifted with a mathematical concept.

**Daughter's Review**: I liked it because it combined fiction with non fiction and I like Maths. I really liked the pictures maths trick [Day 10].**Day 1**: Concept of biggest ...more

I read this book many times as a child myself and eventually went to uni for a mathematics degree (not that the book pushed me towards it, maths was already my fave subject at school anyway). But I think this book makes mathematics seem more approacheable, sometimes even fun, and it ...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...

More about Hans Magnus Enzensberger...
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Kelly wrote: "Well betas aren't known for their masterful incite into literary genius but that doesn't mean they don't know good code when they see it...moreAug 18, 2012 08:06PM

[I can't believe I spelled insight wrong.]

updated Aug 20, 2012 06:21PM