Books : Geometry Tools for a Changing World

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Author name: Hoffer

 : Geometry Tools for a Changing World
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Type of bind: Hardcover
Dewey Decimal Number: 516
EAN num: 9780130501851
ISBN number: 0130501859
Label: Pearson Prentice Hall
Manufacturer: Pearson Prentice Hall
Printing Date: 2001-01
Publishing house: Pearson Prentice Hall
Age index: Young Adult
Sale Popularity Level: 399524
Studio: Pearson Prentice Hall




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Customer Reviews
User popularity level:  out of 5 stars

Rated by buyers 5 out of 5 stars - A book without many faults
Despite what Don Snyder says in his review, I've found the book to be well-written and informative for the most part. Geometry has always been and still is my favorite element of math and I enjoyed taking my high school course with this textbook. Thanks to one of the teachers at my alma mater I now have a copy of this book that was left in the computer lab.

The concept of proof is explained to some extent, but should also be supplemented with other material. The students who generally did well in proofs in my class and the other classes I've seen use this book usually went in for one-on-one help with the teacher.

There is one section of this book that seems to confuse even the smartest students, and that is the section about circles--specifically finding arcs. I didn't understand them until I consulted another textbook. Last year many people complained about that section who were using this book.

The glossary makes up for the bad section on circles. It is well-written and informative.

Another big plus is the review of algebra concepts when they are necessary to solve particular problems. The Algebra II text reviews geometry concepts in the same fashion.

Geometry isn't a math for everyone. Some people get A's in Algebra and B's in Geometry. Others are the opposite. There are also a very few people who can get an A in both (they are usually either really hard workers or are just natural geniuses). This book should help everyone get an A or B as long as they use it and ignore the section about arcs completely.



Rated by buyers 1 out of 5 stars - An example of how NOT to teach math!
Postulates, theorems, constructions: it seems that the authors do not know the difference. In this book postulates are presented as statements of fact, and used to "Prove" theorems. In chapter one, the Pythagorean Theorem is used in proofs BEFORE it is, itself proven.

Chapter 2 begins with the theorem that the sum of the internal angles of a triangle is 180°. The proof is postponed until an exercise in chapter 7, and even then is based on two postulates.

Mathematics should be presented as an orderly progression, each step building on previous lessons. The authors have striven mightily to remove all the logic and reason they possibly could from Geometry. In the 2400 years since Euclid wrote his "Elements," many have tried to improve on his work. Some have succeeded, but not the authors of THIS book.

Professor Joyce at Clark University has placed Euclid's work on the web. Search on "euclid clark university" for the website.

Seth Yoshioka-Maxwell has a website with an interactive construction of Euclid's proof of the Pythagorian theorem. Search on "Seth Yoshioka Maxwell Euclid" for the website.



Rated by buyers 5 out of 5 stars - This is the best introductory level geometry book out there!
I used this book in my highschool Geometry class after using another popular Geometry textbook at another school. This book is the best one for students of all abilities - each lesson centers around a different aspect of a uniting theme (Chapter 1 - Circles, etc) using photographs, graphs, activities and simple, but thorough explanations. After easily helping you master the basics, each lesson then includes an advanced section for more able students which explores the subject more deeply. The best book out there! I recommend any math book from this publisher!



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