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3Blue1brown an Interview with Grant Sanderson Newsmagazine of the Mathematical Association of America Vol. 38, No. 5 | OCTOBER/NOVEMBER 2018 From the Editor This issue is always an interesting cross-over for me—it MAA FOCUS is published by the Mathematical Association of America in is the end of summer, coming right off of the conclusion February/March, April/May, June/July, of MAA MathFest, the start of the fall semester, and the August/September, October/November, and beginning of preparation for the JMM. This year’s MAA December/January. MathFest was an amazing celebration of MAA’s community. There were great plenary talks by Talitha Washington, MAA FOCUS Staff Eugenia Cheng, Laura Taalman, and Raegan Higgins, Editor: Jacqueline Jensen-Vallin, [email protected] among others. Managing Editor & Art Director: In the midst of this celebration of community and diver- Beverly Joy Ruedi, [email protected] sity, Dr. David Clark (Grand Valley State University), Dr. MAA Officers Chad Awtrey (Elon University), and Dr. Mohamed Omar President: Deanna Haunsperger (Harvey Mudd College) received the Alder Award for Distinguished Teaching by Vice President: Carol Schumacher a Beginning College or University Faculty Member. Not long after these talks, Dr. President-Elect: Michael Dorff Omar tweeted the following: Chair of the Congress: Suzanne Dorée Secretary: James Sellers Associate Secretary: Hortensia Soto Treasurer: Jim Daniel Chair, Committee on Sections: Lisa Marano Officer-at-Large: Jennifer Quinn MAA Executive Director Michael Pearson MAA FOCUS Editorial Board Donald J. Albers, David M. Bressoud, Brie Finegold, Joseph A. Gallian, Jacqueline B. Giles, Fernando Q. Gouvêa, Deanna Haunsperger, Stephen Kennedy, Adriana J. Salerno, Nicholas Scoville, James Sellers, Hortensia Soto, Gerard A. Venema While we continue to celebrate the diversity of our membership, we also need to Letters to the editor should be addressed to Jacqueline be conscious of the challenges that many of our colleagues are facing and continue to Jensen-Vallin, MAA, 1529 18th Street, NW, Washington, DC support them. 20036, or, by email, to [email protected]. As you move through the fall semester, continue to support people in your com- Subscription and membership questions should be di- munity of students, colleagues at your university, and your MAA friends. Hope to see rected to the MAA Customer Service Center, 800-331-1622; email: [email protected]; you all at the Joint Mathematics Meetings in Baltimore in January! 301-617-7800 (outside U.S. and Canada); fax: 301-206-9789. MAA Headquarters: 202-387-5200. Advertising inquiries: [email protected] On the Cover Copyright © 2018 by the Mathematical Association of America (Incorporated). Photo of Aurora Borealis and Wing on the American Visionary Art Museum’s exterior. Educational institutions may reproduce articles for Small museum in Baltimore with unusual their own use, but not for sale, provided the following citation is used: “Reprinted with permission of MAA FOCUS, rotating exhibits by self-taught artists, 2 sculp- the newsmagazine of the Mathematical Association of ture plazas and a garden. avam.org America.” Photo by Beverly Ruedi. Periodicals postage paid at Washington, D.C., and addition- al mailing offices. Postmaster: Send address changes to MAA FOCUS, Mathematical Association of America, P.O. Box Photo credits: 90973, Washington, DC 20090-0973. Page 4: Historic Lighthouse, credit: Albert Pego, iStock and Cincinnati Suspension Bridge, credit: ISSN: 0731-2040 (print). ISSN 2161-704X (online). Printed in kdow, iStock. the United States of America. Page 13: Vote banner, credit: tostphoto, iStock. 2 MAA FOCUS | OCTOBER/NOVEMBER 2018 | maa.org/focus Mathematical Association of America Vol. 38, No. 5 | OCTOBER/NOVEMBER 2018 16 20 28 in this ISSUE news Meeting the Future: MAA and the Joint 8 MAA MATHFEST: LOOKING FORWARD Mathematics Meetings 11 DUSTING OFF YOUR BOOKSHELF: GEOMETRY 10 DEANNA HAUNSPERGER and MICHAEL PEARSON — Changes 12 BENEFITS OF THE MAA-T&F PARTNERSHIP: are coming to the Joint Mathematics Meetings. ACCESSIBLE SUPPLEMENTS TO ARTICLES Using Makerspaces to Attract and Retain Women 13 MATH THE VOTE in STEM 14 AN ENGAGED CONGRESS: MAA MATHFEST 16 JENNA CARPENTER — Makerspaces turn the “hands on” 27 JMM: INVITED ADDRESSES approach up a notch. 30 JMM: MAA MINICOURSES 3Blue1Brown: An Interview with Grant Sanderson 33 JMM: LECTURES JACQUELINE JENSEN-VALLIN — Meet the man who turned 20 quaternions into a social media sensation. departments 2 From the Editor 4 Piecewise 24 Toolkit 26 Meet a Member 28 President’s Message Take-aways from MathFest 32 Puzzle Page 34 MAA Books Beat 36 Toolkit maa.org/focus | OCTOBER/NOVEMBER 2018 | MAA FOCUS 3 William Lowell pieceWISE PUTNAMMathematical Competition Visit maa.org/putnam to sign up for and learn more about MAA MathFest Deadlines the 79th William Lowell Putnam Mathematical Competition. October 15 Deadline for Putnam Competition October Priority deadline for Themed Registration 31 Contributed Paper Session proposals November 26 Deadline to submit an official Putnam October Minicourse proposals due team roster 31 December 1 Putnam Mathematical Competition October Invited Paper Session proposals due 31 December Regular deadline for Themed National Research Experience for 1 Contributed Paper Session proposals December Workshop, Panel, Poster, and Town Undergraduates Program 15 Hall Session proposals due Applications for MAA’s National Research Experience December Other Mathematical Session proposals for Undergraduates Program are being accepted through 31 due December 15, 2018. NREUP supports the participation January SIGMAA Session proposals due of mathematics undergraduates from underrepresented 31 groups in focused and challenging research experiences to increase their interest in advanced degrees and careers in mathematics. NREUP aims to reach students at the transition point between lower division and upper division studies, Fall MAA Section Meetings provide mentoring in a challenging summer program that will support students as they continue their undergraduate EASTERN PA & DELAWARE studies, and encourage students to pursue graduate studies November 3, West Chester University and careers in mathematics. Learn more and apply today: maa.org/nreup. INDIANA October 13, Hanover College IOWA October 5–6, Morningside College MARYLAND/DC/VIRGINIA November 2–3, Mary Washington University NEW JERSEY October 27, Montclair State University NORTH CENTRAL October 12–13, Southwest Minnesota State University BALTIMORE • JAN 16–19, 2019 NORTHEASTERN November 16–17, Southern New Hampshire University Important Deadlines OHIO October 26–27, Malone University October 30 Complimentary hotel room lottery SEAWAY November 20 To receive programs in the mail October 12–13, University of Toronto Mississauga December 1 Hotel reservations with check deposit SOUTHERN CALIFORNIA-NEVADA December 13 Hotel reservations thru JMM website October 27, Scripps College December 27 Advance registration For the most up-to-date information on your section’s activities go to maa.org/sections and click on the link for your section. BALTIMORE • JAN 16–19, 2019 50 year members honored at MathFest. Deanna Haunsperger (far right) with (from left to right): Gerald Edgar, Joel Cunningham, Roger Waggoner, Martha Siegel, Curtis Herink, Rich Mitchell, David Stone. “You, too, can be a 50-year member — just pay your dues every year and live long enough.” — Roger Waggoner Don’t miss this exclusive offer for MAA members from Taylor & Francis! MAA members receive 30% off all CRC Press titles with MAA Project NExT is introducing new application cycle! an exclusive member code. Login to your member profile The first round of applications for the 2019 cohort of MAA page (maa.org) for additional details and the code. Project NExT is due on October 15th. New(ish) faculty who are already in full-time teaching positions should use this deadline. Decisions will be made by December 1. Those Found Math accepting positions during this academic year (to start Fall 2019) will have a second application deadline of April 15th. For more information, see the MAA Project NExT website: projectnext.maa.org. AMC Deadlines AMC 8 Regular Registration October 29 Final day to order additional October 29 bundles for the AMC 8 Late Registration November 5 AMC 8 Contest will be held Tuesday, November 13, 2018. AMC 10 and AMC 12 10/12 Early Bird Registration January 8, 2019 A Regular Registration January 9–22, 2019 10/12 Early Bird Registration January 22, 2019 B Regular Registration January 23–28, 2019 AMC 10/12A Contest will be held on February 7, 2019. AMC 10/12B Contest will be held on February 13, 2019. Photo was taken in an alley near Waithman Street, London. — Submitted by Stephan Ramon Garcia, Pomona College maa.org/focus | OCTOBER/NOVEMBER 2018 | MAA FOCUS 5 Journal of Humanistic Mathematics pieceWISE issue on Math Mamas The Journal of Humanistic Mathematics (JHM) is pleased to announce its Special Issue on Mathematics and Mother- Kansas Section Teaching Award Winners hood, featuring articles from many MAA members. JHM is We apologize for missing the Kansas Section Teaching Award an open-access journal with no author charges. According winners in the June-July MAA FOCUS. to their website “The term humanistic mathematics could include a broad range of topics; for our purposes it means 2017 Kansas Section 2018 Kansas Section “the human face of mathematics.” Thus our emphasis is on Teaching Award winner Teaching Award winner the aesthetic, cultural, historical, literary, pedagogical, philo-
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