- Paperback: 160 pages
- Publisher: Scholastic; new editon edition (4 Jan 2010)
- Language English
- ISBN-10: 1407107151
- ISBN-13: 978-1407107158
- Product Dimensions: 19.4 x 12.8 x 1.2 cm
- Average Customer Review: 4.5 out of 5 stars See all reviews (2 customer reviews)
- Amazon Bestsellers Rank: 152,901 in Books (See Top 100 in Books)
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More About the Author
Product Description
Product Description
Using a host of hilarious characters, Kjartan Poskitt presents all the tricks, tips and shortcuts to maths they don't teach at school. Readers will learn how to encode and decode their own messages in as many ways as possible. Can you see this very last paragraph is coded? (Read all the fourth words). The book demonstrates other codes you've probably never really been aware of. Stop waiting therefore and go for it.
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Most Helpful Customer Reviews
10 of 11 people found the following review helpful:
4.0 out of 5 stars
'..dedicated to a particular branch of mathematics - in this case, we have 'cryptanalysis'!,
By
This review is from: Codes: How to Make Them and Break Them (Murderous Maths) (Paperback)
'Guarantee - this book contains no nasty exercises and no boring sums'
Each of the books in this series is dedicated to a particular branch of mathematics - in this case, we have `cryptanalysis'. 'Is maths making you miserable? Are you confused by ciphers and baffled by binary? Let 'Murderous Maths' take the agony out of cryptanalysis and you'll be a code-cracking genius in no time. The Pure Mathematicians explain how a computer can make buying shoes safe and the secrets of ENIGMA are revealed. Plus, find out Dolly Snowlips' waist size and a tatty tablecloth can help the Gangsters with their latest money-making scheme.' The colourful, humorous cover opens to 160 pages, split over 11 chapters:- A sneaky start Disguised messages Scrambling codes Substitution codes One-time pads Grid codes The Enigma machine Number messages Pig pens Double codes The uncrackable credit card code written in a variety of fonts in the usual Kjartan Poskitt entertaining style, e.g.:- 'As you launch yourself into this extraordinary book, notice that arranged within the main text there are many cunningly concealed kinds of trick messages, only you don't see any just yet. Hah! Did you spot it? No? We hate to tell you this but you have `already' read a secret message. Yes indeed, a hidden announcement of national importance was sneaked into that first sentence! It uses one of the easiest sorts of codes, but don't worry if you didn't see it as we'll explain it soon............' Black and white illustrations/cartoons throughout. Maths as you have never seen it before!
5.0 out of 5 stars
Codes for Children,
By
This review is from: Codes: How to Make Them and Break Them (Murderous Maths) (Paperback)
I bought this book to use with the children I work with in a local Primary school. They were fascinated with the history of encipherment and de-cryption and really enjoyed cracking codes and creating their own. This book was especially useful when we were studying the Second World War as our topic.
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Most Helpful Customer Reviews on Amazon.com (beta) Amazon.com:
5.0 out of 5 stars (1 customer review)
5.0 out of 5 stars
Wicked funny,
By poltroon "poltroon" - Published on Amazon.com
This review is from: Codes: How to Make Them and Break Them (Murderous Maths) (Paperback)
This book is perfect for late elementary and middle school kids who are in that stage of their life where they are dying to communicate secretly. It is full of very practical ideas - and no, not at all about math, no siree, no math here - fun, and mind-stretching. I'm only sad that I didn't find it hidden in my school library as a child.
You can just read through it and have a nice experience. But, to fully experience it, you'll have to put some effort in to wrap your mind around all the coded messages. It also works in some computer technology, like AND/OR/NAND/NOR/XOR gates, and how an XOR gate is able to add two binary numbers and gives you the beginnings of computer based-cryptography systems and why you can safely send a credit card over the internet to boot. The mix of narratives, cartoons, and explanatory sections is ideal for a young (or young at heart) self-directed learner. The text does a great job of introducing each idea at multiple levels of rigor: there's enough information to really get a handle on the basic mathematics, but it's breezy enough that you can pass over the rigor and still get the flavor of codes and cryptography. I enjoyed it as an adult and it would be an excellent choice for someone of any age. |
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