Musical Mathematics is the definitive tome for the adventurous musician. Integrating mathematics, music history, and hands-on experience, this volume serves as a comprehensive guide to the tunings and scales of acoustic instruments from around the world. Author, composer, and builder Cris Forster illuminates the mathematical principles of acoustic music, offering practical information and new discoveries about both traditional and innovative instruments.With this knowledge readers can improve, or begin to build, their own instruments inspired by Forster's creationsshown in 16 color plates. For those ready to step outside musical conventions and those whose curiosity about the science of sound is never satisfied, Musical Mathematics is the map to a new musical world.

A New York Times–bestselling author looks at mathematics education in America—when it’s worthwhile, and when it’s not. Why do we inflict a full menu of mathematics—algebra, geometry, trigonometry, even calculus—on all young Americans, regardless of their interests or aptitudes? While Andrew Hacker has been a professor of mathematics himself, and extols the glories of the subject, he also questions some widely held assumptions in this thought-provoking and practical-minded book. Does advanced math really broaden our minds? Is mastery of azimuths and asymptotes needed for success in most jobs? Should the entire Common Core syllabus be required of every student? Hacker worries that our nation’s current frenzied emphasis on STEM is diverting attention from other pursuits and even subverting the spirit of the country. Here, he shows how mandating math for everyone prevents other talents from being developed and acts as an irrational barrier to graduation and careers. He proposes alternatives, including teaching facility with figures, quantitative reasoning, and understanding statistics. Expanding upon the author’s viral New York Times op-ed, The Math Myth is sure to spark a heated and needed national conversation—not just about mathematics but about the kind of people and society we want to be. “Hacker’s accessible arguments offer plenty to think about and should serve as a clarion call to students, parents, and educators who decry the one-size-fits-all approach to schooling.” —Publishers Weekly, starred review

Most of us have wondered, sometime during our lifetime, about when Adam and Eve were really "expelled from paradise" in the Garden of Eden. "Can" we find a verifiable and replicable answer to this question? Most of us have questioned, sometime during our lifetime, the "accepted" sequential biblical timeline of Archbishop James Ussher who claimed that 4004 BC was the actual date for that initial biblical event in our current holy scriptures. Was he right? Most of us have questioned, sometime in our lifetime, how the Hebrew's "accepted" claim that 3761 BC could be the actual date for Adam's "expulsion." Were they right? "Can" we find a way to reconstruct the complete Hebrew Bible timeline, from Adam's "expulsion" from paradise to our day? Is this possible? Who believes that it can be done? Well, it has been done! Here, is how it is done! To reconstruct the Hebrew Bible timeline, we need to know only the simple math formula that they used! The employment of this simple formula shall enable us to rebuild that same sequential biblical timeline, block by block, in the exact same fashion that the Jewish people "use from the beginning," at Adam's "expulsion" from paradise, in the Garden of Eden. The formula used in reconstructing an "actual count" of the Hebrew Bible is found below: 7 7 = 49 10 = 490 10 = 4,900 solar years 7 7 = 49 + 1 = 50 10 = 500 10 = 5,000 lunar years Since both of these 49 solar, and 50 lunar, periods of time contain 18,200 days (approx), we can then "post the number" of any given sequential biblical event in its designated year position on a side-by-side comparison chart. If we "post the number" in this fashion, it will show us exactly when and where, on the timeline chart, there is an error in the sequential computations of any sequential biblical event that is propounded by any biblical chronologist, past or present! In this present book, we find that the Ussher biblical timeline is 112 years "too early." And the Hebrew biblical timeline of Codex Judaica is 131 years "too late." Obviously, 3892 BC is the only "year number" that can work for a verifiable timeline! This book, "The Holy Bible "Chronicle" of Sequential Biblical Events," by Robert P. Killian, is the fruit of over seventy-year search for that verifiable and replicable answer to the long-sought question: "Can the Ussher biblical timeline be trusted?"

The book presents the history of ICMI trough a prosopographical approach. In other words, it pays a lot of attention to the actors of the International movement. The portraits of the members of the ICMI Central Committees (1908-1936) and ICMI Executive Committees (1952-2008), and other eminent figures in ICMI history, who have passed away in the first 100 years of its life, are the guiding thread of the volume. Each portrait includes: · Biographical information · An outline of the various contributions made by the individual in question to the study of problems pertaining to mathematics teaching/education · Primary bibliography · Secondary with particular attention to the publications concerning the teaching of mathematics · Images: photos, book frontispieces, relevant manuscripts The authors of the portraits (30 altogether) are researchers in the history of mathematics, mathematics, and mathematics education. The focus on the officer’s role within ICMI and on his/her contributions to mathematics education, make the portraits different from usual biographies. In particular, since most officers were active mathematicians, the portraits shed light on aspects of their lesser-known activity. Connecting chapters place the action of these figures in the historical context and in the different phases of ICMI history.