1600.io SAT Math Orange Book Volume II: Every SAT Math Topic, Patiently Explained (1600.io SAT Math Orange Book 2-volume set)

Both volumes of this book is the best, most complete reference on SAT math out there. Every single aspect and technique covered

My daughter received 800 in Math after this book! Excellent tool.

I'm a Harvard grad, SAT perfect scorer, and professional SAT private tutor since 2002, as well as the founder of the r/SATACTprep subreddit, with over 10,000 subscribers and more than 5 million pageviews per year."1600.io SAT Math, Volume II," aka the orange book, by Gotta, Kirchheimer and Rimakis, is a solidly organized, well-presented set of imitation SAT math practice questions, chapter lessons, strategy tips, and detailed question explanations that are meant to help students truly learn, instead of just "hacking" the test—certainly a worthy goal, but one to which the authors cling with excessive gusto and pretension, to the reader's detriment. The fact is, sometimes alternative, "backdoor" methods and hacks such as plugging in, using one's graphing calculator, or even mental math / estimation are exactly what's needed to solve an SAT math question quickly and easily.While the roughly 450 non-official SAT math practice questions in this guide are mostly excellent, thorough, and wide-ranging, and the organization of the orange book into discrete chapters is top-notch, the 3 authors unfortunately take the opportunity to dispense some highly suspect math strategy advice along the way ("Plugging in Is Surrender" / "Calculators: Tools of the Devil" / "Mental Math is Dumb"). Meanwhile, they stubbornly stick to an algebra-heavy approach that both takes up too much space visually in the book, and can require an excessive amount of time for students to solve. As a result, the provided explanation is not always ideal. Thus, I would recommend this book more strongly as a set of practice questions organized by topic than as a reliable, standalone SAT math strategy guide. Like the College Board's written explanations to SAT exams 1-10, the 1600.io explanations will often leave you wanting more, so keep trying each question yourself until it makes sense.As with any 400-page math book, I expect there to be the occasional error. Don't believe the reviewers who give this book 1 or 2 stars just because of a few typos: nearly all test-prep guides have mistakes in the first few editions, and the authors have promised to maintain an errata page on the book's website.Volume II contains the following chapters: 12) Ratios, Probability and Proportions, 13) Percentages, 14) Exponential Relationships, 15) Scatterplots and Line Graphs, 16) Functions, 17) Statistics, 18) Unit Conversions, 19) Angles, Triangles, and Trigonometry, 20) Circles and Volume, and 21) Wormholes.There's also a nice feature at the end of each chapter, where the authors recommend similar questions from the 22 official, released SAT QAS exams. There are about 20 other official SAT and PSAT exams floating around as well, however, so it would have been nice for the authors to have provided recommendations from those tests, too.One slightly annoying feature: the authors frequently toss around the trademarked term "SkillDrill," as if they had invented the concept of drilling basic math skills before moving on to harder questions. Spoiler alert: this concept (and term) has already been widely used for decades.Overall, this math guide is a solid addition to the SAT prep pantheon. Is it the "best SAT math book ever written," as the authors claim in the book's preface? I would say no (College Panda still wins that honor for me), but I'm sure others will disagree.Best of luck on your SAT and beyond. For more information, and my full list of SAT prep recommendations, google "SAT Action Plan - McElroy Tutoring."

My daughter did both the books just before her SAT, and she was able to get a near-perfect score in Math. His videos are also outstanding, and the pricing is pretty decent.

Kids really enjoy this prep book and it was highly recommended by school staff.

am a National Board Professional Certified Teacher. For the past 25 years I have professionally tutored students for the SAT and ACT exams. I find “1600.io SAT Math Volume 1 and 2” to be excellent resources for my students. Their sequential approach allows students to firm up skills that the testers may have forgotten or have never learned. This is especially important given the learning loss due to Covid’s disruption of academics the past two years. The books give students confidence to tackle SAT problems that expand on their mathematical foundation. Its multiple approaches to problem solving are a great way to teach strategies and provide the students ways to check their answers. The books are organized into specific topics with references to problems from officially released SAT tests. I also use “1600.io SAT Math” to help high scoring students with topics to which they may not have been introduced. I would definitely recommend these books to students preparing for the SAT or wanting a review of essential high school mathematics. Lieberman Educational Consulting

As an Academic Counselor and College/Career Opportunity Advisor for high school students it is imperative that I provide reliable resources to our students. I initially ordered the 1600.io Orange books to assist my 11th grader with her upcoming exam. After using the books and 1600.io website review videos, my daughter took the March 2021 SAT and received a perfect math score on her first attempt. She credits the examples and detailed chapter reviews for her success. After working with a number of other students using the same 1600.io SAT Math Orange books, I am convinced these books are an excellent addition to our test prep courses. I now recommend these books to all of my students and parents.