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Alfred Posamentier – Inspired by Math #13

Dr. Alfred Posamentier and Ingmar Lehmann recently co-authored a delightful book, The Secrets of Triangles: A Mathematical Journey, published by Prometheus Books. I had the pleasure of interviewing Dr. Posamentier for 50 minutes. Aside from the fact that we both grew up in New York City and got to reminisce about some of the prominent math teachers of the late '70's and early 80's, I very much appreciate Dr. Posamentier's deep understanding of the issues that make math challenging for teachers and students, and his deep caring about my favorite subject.

About Dr. Posamentier

From Wikipedia:
Alfred S. Posamentier (born October 18, 1942) is among the most prominent American educators in the country and is a lead commentator on American math and science education, regularly contributing to The New York Times and other news publications. He has created original math and science curricula, emphasized the need for increased math and science funding, promulgated criteria by which to select math and science educators, advocated the importance of involving parents in K-12 math and science education, and provided myriad curricular solutions for teaching critical thinking in math.

Dr. Posamentier was a member of the New York State Education Commissioner’s Blue Ribbon Panel on the Math-A Regents Exams. He served on the the Commissioner’s Mathematics Standards Committee, which redefined the Standards for New York State. And he currently serves on the New York City schools’ Chancellor’s Math Advisory Panel.

Dr. Posamentier has authored or co-authored over 55 books, including:

  • Progress in Mathematics K-9 textbook series (Sadlier-Oxford, 2006-2009)
  • Math Wonders: To Inspire Teachers and Students (ASCD, 2003)
  • Math Charmers: Tantalizing Tidbits for the Mind (Prometheus Books, 2003)
  • Pi: A Biography of the World’s Most Mysterious Number (Prometheus Books, 2004)
  • 101+ Great Ideas to Introduce Key Concepts in Mathematics (Corwin, 2006)
  • What successful Math Teacher Do: Grades 6-12 (Corwin 2006)
  • What successful Math Teacher Do: Grades K-5 (Corwin 2007)
  • Exemplary Practices for Secondary Math Teachers (ASCD, 2007) and The Fabulous Fibonacci Numbers (Prometheus Books, 2007)
  • Problem-Solving Strategies for Efficient and Elegant Solutions, Grades 6-12 (Corwin, 2008
  • Problem Solving in Mathematics: Grades 3-6: Powerful Strategies to Deepen Understanding (Corwin, 2009)
  • Mathematical Amazements and Surprises: Fascinating Figures and Noteworthy Numbers (Prometheus, 2009)
  • The Pythagorean Theorem : Its Power and Glory (Prometheus, 2010)
  • The Fabulous Fibonacci Numbers (Prometheus, 2011)
  • The Glorious Golden Ratio (Prometheus, 2012)
  • The Art of Motivating Students for Mathematics Instructions (Mc-Graw-Hill, 2012)
  • The Secrets of Triangles (Prometheus, 2012)

About The Secrets of Triangles: A Mathematical Journey

From the publisher's site (Prometheus Books):
“An adventure into the awe-inspiring realms of the triangle. [Posamentier and Lehmann] show us that a study of this basic geometric figure reveals a compelling and natural aesthetic beauty, and in so doing they unravel remarkable relationships and mathematical phenomena. The authors provide examples that illustrate the fascination that mathematicians and philosophers have had with the triangle for over two thousand years. . . . Their book forms a worthy and practical adjunct to this inspiring corpus of thought.”

TOM BREEN, executive chairman, Breen Property Group, Australia

“This book exposes some of the most amazing relationships involving triangles and their parts. With just some recollection of high-school geometry, the reader will be guided through many surprising triangle relationships that could rekindle for many the beauty of mathematics. Readers will surely find this book entertaining because, through simple language, wonders of geometry emerge.”

DR. CHARLOTTE K. FRANK, senior vice president, Research and Development, McGraw-Hill Education

“This wonderful book intelligibly presents a plethora of triangle characteristics and relationships that really makes one appreciate this basic geometric figure. A must-read for anyone curious about what was missed in high-school geometry.”

DR. ANTON DOBART, director general,
Federal Ministry for Education, the Arts and Culture, Vienna, Austria

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  1. Another wonderful podcast Sol! I especially enjoyed hearing some of Dr. Posamentier’s anecdotes and pet peeves, and also learning that he has another new book on the way.

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