Head First 2D Geometry

 

Author: Lindsey Fallow & Dawn Griffiths
Publisher: O'Reilly, 2010
Pages: 368
ISBN: 978-0596808334
Aimed at: Those with an aversion to maths
Rating: 4
Pros: Uses an approach that works
Cons: Doesn't go very far
Reviewed by: Mike James

2D geometry is basic to so many things, including any attempt at programming graphics. This book aims to introduce the basic ideas without frightening the non-mathematical reader.

It sort of works - but there are some reservations.

 

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Following the usual form of a "Head First" title there are lots of photos, asides, quizzes, activities and so on - and it does help.

The ideas are all introduced as part of a "real world" problem - a fictitious homicide is used to introduce angles and properties of angles as you try to work out the CSI-take on geometry.

Later stories are similarly angled (pun intended) to capture the imagination of teenagers - skate boarding, designing a pattern for a screen graphic and so on. Again all of this mostly works even if you initially might feel a bit embarrassed by the cartoon-like characters - hey dude where's my angle. But if you stay with it you do get immersed in the problems and the geometry needed to solve them.

There are severn chapters:

Chapter 1. Finding Missing Angles
Chapter 2. Similarity and Congruence
Chapter 3. The Pythagorean Theorem
Chapter 4. Triangle Properties
Chapter 5. Circles
Chapter 6. Quadrilaterals
Chapter 7. Regular Polygons

The book really does start from the basic idea of what an angle is and doesn't get very far. You do learn Pythagoras via the usual geometric demonstration rather than by proof and both proof and algebra are down played at every turn.

It is about getting the student to really understand and imagine the geometric properties under discussion. This is geometry by feel and experience, rather than proof, and there is nothing wrong with the approach. 

This is not a book that is going to be of any use to the student who has even the slightest grasp of, or aptitude for, math and geometry in particular. It is such a low level and such a low information density that it really is only for the maths non-starter or refuser.

So as long as you realise that this is very basic 2D geometry and it isn't going to be of direct help if you  are struggling with a traditional course on geometric proofs then it's a good book.

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Make: Technology on Your Time Volume 25

Author: Mark Frauenfelder
Publisher: Make, 2010
Pages: 176
ISBN:978-1449393984
Aimed at: DIY and electronics enthusiasts
Rating: 4.5
Pros: Not only Arduino, holography as well
Cons: Shortage of advanced content
Reviewed by: Harry Fairhead

The January 2011 issue of the Make magazine is an Arduino special  [ ... ]



Sams Teach Yourself JavaScript in 24 Hours (5e)

Author: Phil Ballard, Michael Moncur
Publisher: Sams, 2012
Pages:448
ISBN: 978-0672336089
Audience: Beginner
Rating: 3
Reviewer: Ian Elliot

JavaScript is an easy to learn language so can 24 hours turn you from a beginner to an expert?


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Last Updated ( Wednesday, 25 August 2010 )
 
 

   
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