For instance, graph transformations go before linear functions, inverse functions are covered in two separate sections, trigonometric functions are introduced as ratios in a circle before the text defines them as ratios in a right triangle. I would consider teaching a few sections or topics out of order. Most of the topics of the text are presented in the learner-friendly order. Everything is clear and visual the textbook is easy to read and follow. Each section covers a specific topic and follows the same layout. The text consists of 9 chapters and each chapter consists of 4-8 sections. Similar design makes it is easy to navigate each section. The text is consistent both concept and style wise. The language of the textbook is easily understandable and uses the proper terminology. You can download separate chapters as Word documents and easily change or remix them. The content is up-to-date and includes real life applications and examples. The textbook provides the basis for calculus classes. There are a few typos, but the textbook comes with an errata. There is an index, and you can use the search option when viewing the PDF files. Otherwise, it provides sufficient explanations and examples for the topics covered. It is missing following topics: function arithmetic, point-slope of an equation of a line, systems of linear and non-linear equations, matrices, which you can supplement with a different OER textbook. The textbook covers the majority of precalculus and trigonometry topics. Reviewed by Evgenia Harrison, Instructor, Tidewater Community College on 3/28/23 Journalism, Media Studies & Communications +.
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