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CK-12 Algebra I [Kindle Edition]

CK-12 Foundation
3.4 out of 5 stars  See all reviews (51 customer reviews)

Kindle Price: $0.00

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Book Description

CK-12 Foundation's Algebra FlexBook is an introduction to algebraic concepts for the high school student. Topics include: Equations & Functions, Real Numbers, Equations of Lines, Solving Systems of Equations & Quadratic Equations.

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Product Details

  • File Size: 23316 KB
  • Print Length: 1074 pages
  • Simultaneous Device Usage: Unlimited
  • Publisher: CK-12 Foundation (September 10, 2010)
  • Sold by: Amazon Digital Services, Inc.
  • Language: English
  • ASIN: B0042XA344
  • Text-to-Speech: Enabled
  • X-Ray:
  • Lending: Not Enabled
  • Amazon Best Sellers Rank: #2,880 Free in Kindle Store (See Top 100 Free in Kindle Store)
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Customer Reviews

Most Helpful Customer Reviews
61 of 62 people found the following review helpful
1.0 out of 5 stars Great Idea, Lousy Kindle Conversion October 11, 2010
Format:Kindle Edition|Verified Purchase
I'm all-for electronic textbooks, but whatever system was used to perform the document master to Kindle edition conversion did a really lousy job. All of the more complex elements (variable names, equations, etc...) are represented using ultra-low resolution, distorted graphics. Blurry at best, illegible at worst. Some of the elements are missing altogether, such as the minus sign on the very _FIRST_ page!

Did anyone actually proof the text once it was converted?!
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46 of 47 people found the following review helpful
5.0 out of 5 stars This book is great for an Algebra review May 2, 2011
Format:Kindle Edition|Verified Purchase
The publisher must have corrected the issues that the previous reviewers wrote about. I downloaded this in May, 2011, and it does have a table of contents and the graphics are fine. I think it's easier to read on my PC for Kindle than on the kindle itself because of the nature of the textbook, but even on my kindle the graphics were clear.

I hadn't even considered downloading this because of the negative reviews, but decided to try it since it's free anyway. I'm glad I did. I'm very pleased with this book.
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34 of 36 people found the following review helpful
3.0 out of 5 stars Nice refresher, but typos are annoying October 5, 2010
Format:Kindle Edition|Verified Purchase
I can not complain much about a free book, I wanted it as a refresher of algebraic principles. The text seems to be okay, but so far, half way through the first chapter, I have encountered a number of problems with, well, the problems. A variable is listed in the practice section as squared, but when checking the answer it is apparent that it was cubed instead. A plus sign is switched for a minus sign, a number is changed. It does make doing the practice annoying. However, I am still learning and remembering about algebra.
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5 of 5 people found the following review helpful
4.0 out of 5 stars Excellent free algebra text for the Kindle August 22, 2011
Format:Kindle Edition|Verified Purchase
I was skeptical based on the other reviews of this book, but I'm able to view the book just fine on my Kindle 3rd edition and the desktop software. If you're looking on brushing up on algebra or even help with homeschooling or tutoring algebra, this is a great book for the price (since it's free.) It's even worth downloading if you don't own a Kindle (you could use the desktop client) and use this as an extra resource.

Like any math textbooks, there are errors. Having taken a great number of math classes over the course of my life, I'm not phased by it, but I would hope that it's corrected in a future version of the text if you were going to use this as an educational resource.
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6 of 7 people found the following review helpful
1.0 out of 5 stars The Book Has a Lot of Errors June 16, 2011
Format:Kindle Edition|Verified Purchase
I don't usually write reviews very often, but I wanted to save people the time and frustration of even downloading this free kindle book. It is terrible! I love the idea of having a textbook on kindle, it is an amazing way to learn, however, the math problems in this book are completely wrong. You will see problems that say X^2 however the answer they give to the problem will not be X squared, it will be X cubed. This is very frustrating and would easily confuse someone who is new to algebra. These errors are thoughout the book!

There are other books in the CK-12 series that are much better, but the Algebra I book is not even worth $0.00
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2 of 2 people found the following review helpful
5.0 out of 5 stars Helped me a lot December 13, 2011
Format:Kindle Edition|Verified Purchase
I am very BAD at anything more than basic algebra. So when I found out that this was free I was very excited. It explained things quite clearly and simply and seemed built for people like me who have trouble with math.
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1 of 1 people found the following review helpful
2.0 out of 5 stars Richard Feinman understood June 16, 2013
Format:Kindle Edition|Verified Purchase
Now I see why Feinman was screaming while reviewing text books. Some equations have + signs were an = sign is supposed to be.
Some make no sense at all. The editor must have red the book while asleep or was not familiar with grammer or tense. This would be a good book it didn't frustrate young readers who may spend a considerable amount of time trying to figure out how an answer or progression was derived only to discover they were unduly taxed by printing or mathematical or other errors.
I suggest scowering the Internet for a book which the writer and editor were attentive. Otherwise (no comma on a kindle) prepare to buy a lot of Rogain.
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3 of 4 people found the following review helpful
1.0 out of 5 stars Too many typos and mangled questions... June 2, 2011
By Anon
Format:Kindle Edition|Verified Purchase
I admire the publishers for attempting to create a free textbook, but it looks more like a error-ridden rough draft than a final draft. There is at least one math typo every page (not counting the grammatical errors). Sometimes it is simply a sign change error, but frequently the writer gives a problem, then changes the original problem when offering his/her solution. 2x+5=8 suddenly becomes 2x+6=8. Worse than that were all the times he or she forgot the original problem halfway though solving it. Also, perhaps fifty images were broken/missing in the text.

Since I'm just reviewing all my previous math from algebra to calculus, it suited my purposes. However, do not under any circumstances use this book to learn algebra. If you have a really solid foundation and just want a quick review before you move on to other things, then it's okay for that (and for a chuckle if you don't rip your hair out first). I've gone through the geometry one as well, and it's just as bad (without the broken/missing image problem).
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Most Recent Customer Reviews
5.0 out of 5 stars Five Stars
Excelente!
Published 1 month ago by Sergio
4.0 out of 5 stars Four Stars
great book
Published 1 month ago by Aaron Carver
5.0 out of 5 stars Five Stars
Great book.
Published 1 month ago by Tanya
4.0 out of 5 stars Nice, but lacks formalism
This book is a good tool for a student who wants to get to know the techniques, but who has no intention of a deeper encounter with mathematics. Read more
Published 2 months ago by Luca Noro
1.0 out of 5 stars Problem with viewing
I was looking forward to a refreshment of my knowledge of algerbra, however I couldn't see the equations or formulas because they were extremely small. Read more
Published 3 months ago by H. Maureen Dutton
4.0 out of 5 stars Algebra
I like this stuff. Not much for the every day life; however, ... . I gave it four stars! Why not get your own copy! It is free!
Published 5 months ago by Amazon Customer
5.0 out of 5 stars Great Reference Book...
Got this to brush up on my math/algebra. It is a little cumbersome for me to use on my kindle, (would be even better to have as the actual book) however, it is great. Read more
Published 5 months ago by Cindy L
3.0 out of 5 stars Why are the numbers so small?
the text used for the variables and mathematics is very small I can't tell which number (or letter) is which when I read. other than good book. there are some typos.
Published 5 months ago by Ian Mcdonald
5.0 out of 5 stars CK-12 comes with lots of interactive multimedia support, all free.
The book content itself gets a 4 but the supporting materials on their web site gets a 5+. Just go to CK12.org and it is al there free. Read more
Published 6 months ago by Bill G
5.0 out of 5 stars Love It
This is a really helpful book that I use a lot of the time. This book is simple to read & breaks down the parts really nicely. (:
Published 7 months ago by Girl
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Not available in the USA ?
I'm not sure who is in charge of this, amazon or CK-12
Dec 30, 2010 by G. S. |  See all 2 posts
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