National Math Festival MIT Wins Putnam Call for Papers at JMM MAA National Positions Filled
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0$$)2&86 NEWSMAGAZINE OF THE MATHEMATICAL ASSOCIATION OF AMERICA, VOL. 35, NO. 3, JUNE/JULY 2015 National Math Festival MIT Wins Putnam Call for Papers at JMM MAA National Positions Filled 0$$)2&86is published by the he MAA Officers Election ended on May 4. The officers elected are Mathematical Association of America in as follows: February/March, April/May, June/July, T August/September, October/November, and December/January. Advertising inquiries: [email protected] MAA FOCUS Staff Director of Publications: Jim Angelo Editor: Ivars Peterson, [email protected] Managing Editor & Art Director: Lois M. Baron, [email protected] Staff Writer: Alexandra Branscombe President-Elect First Vice President Second Vice President Deanna Matt Boelkins Tim Chartier MAA Officers President: Francis Edward Su Haunsperger Grand Valley State Davidson College Past President: Robert L. Devaney Carleton College University First Vice President: Jenna Carpenter Second Vice President: Karen Saxe Two new members of the nominating committee were elected: Secretary: Barbara T. Faires Treasurer: Jim Daniel Chair, Council on Publications and Communications: Jennifer J. Quinn Executive Director Michael Pearson MAA FOCUS Editorial Board Donald J. Albers, Janet L. Beery, David M. Bressoud, Susan J. Colley, Brie Finegold, Joseph A. Gallian, Jacqueline B. Giles, Fernando Q. Gouvêa, Rick Cleary Susan Jane Colley Jacqueline A. Jensen, Colm Mulcahy, Adriana J. Babson College Oberlin College Salerno, Amy Shell-Gellasch, Francis E. Su, Laura Taalman, Gerard A. Venema All terms begin February 1, 2016. The MAA congratulates the new Letters to the editor should be addressed to officers and thanks all who participated in the election. Ivars Peterson, Mathematical Association of America, 1529 18th Street, NW, Washington, DC 20036, or by email to [email protected]. Subscription and membership questions Falconer Lecturer: Nominations should be directed to the MAA Customer Service Center, 800-331-1622; email: he Association for Women in Mathematics and the Mathematical [email protected] 301-617-7800 (outside Association of America annually present the Etta Z. Falconer U.S. and Canada); fax: 301-206-9789. MAA T Headquarters: 202-387-5200. Lecture to honor women who have made distinguished contributions to the mathematical sciences or mathematics education. These one-hour Copyright © 2015 by the Mathematical expository lectures are presented at MAA MathFest each summer. Association of America (Incorporated). Nominations for the 2016 AWM-MAA Falconer Lecture are solicited Educational institutions may reproduce articles and will remain active for a total of two years (one year beyond the initial for their own use, but not for sale, provided the following citation is used: “Reprinted with nominations). The letter of nomination should include an outline of the permission of MAA FOCUS, the newsmagazine nominee’s distinguished contributions to the mathematical sciences or of the Mathematical Association of America.” mathematics education and address the nominee’s capability of delivering Periodicals postage paid at Washington, D.C., an expository lecture. The deadline for nominations is September 1. and additional mailing offices. Postmaster: Send Nomination materials for this award should be compiled into one PDF address changes to MAA FOCUS, Mathematical file and submitted online at0DWK3URJUDPVRUJ . The link to Association of America, P.O. Box 90973, MathPrograms will be available 45 days prior to deadline. Check Washington, DC 20090-0973. ISSN: 0731-2040 DZPPDWKRUJ for more details. (print). ISSN 2161-704X (online). Printed in the United States of America. 0$$)2&86 NEWSMAGAZINE OF THE MATHEMATICAL ASSOCIATION OF AMERICA v VOL. 35, NO. 3 v JUNE/JULY 2015 Features National Math Festival Brings Math to the Mall . 4 Katharine Merow To Friend or Not to Friend? Facebook for Professional Educators . 6 Dana C. Ernst, Matthew Leingang, and Ron Taylor Supporting a Statistician in a Math Department . 8 SIGMAA Stat Ed Distinguished Lecture: Bubbly Mathematics . 12 Katharine Merow MAA Competitions Gets New Director . 20 Alexandra Branscombe Interview: T. Christine Stevens . 22 Kenneth A. Ross 4 Call for MAA Papers at the 2016 Joint Mathematics Meetings in Seattle . 35 About the CoverDepartments News 18 President’s Message | 2 MAA National Positions Filled Francis Edward Su 2 Falconer Lecturer: Nominations To the Mathematical Beach 9 New SIGMAA on Undergraduate 26 Puzzle Page | Research Laura Taalman, Editor KenKen Variations 10 Tensor Foundation Grants Awarded by Robert Fuhrer to 27 Projects 28 Book Reviews | 15 Girls’ Team Places Second in European Olympiad Guided by Shanthi Math Books in the Kitchen Chandrasekar, National Math 31 MAA Books Beat | Steve Kennedy 17 MIT Wins, Sets Record at Putnam Festival attendees discovered Exploring the Heart of Calculus Competition the beautiful curved loops 33 Archives Spotlight | Carol Mead 32 Call for Nominations: Dolciani and geometric symmetry of Can You Identify These People? Award kolam, a South Indian style of SDLQWLQJXVLQJULFHpRXU Above right, a girl pulls a bubble at the festival’s 2REOHFN2O\PSLFV Photos: MSRI, National Math Festival 4 National Math Festival Brings Math to the Mall By Katharine Merow s he made his way to the National Mall in AWashington, D.C., on April 18, University of Maryland math professor Larry Washington worried. He worried about the weather, whether it was too nice. He worried about star power, the allure of Usher and Mary J. Blige. Would folks forsake the sunshine, he wondered, to hear a lecture about the Rubik’s cube in the subterranean depths of the Smithsonian’s Ripley Center? Could even a giant square-wheeled tricycle compete with Gwen Stefani and the other big-name artists performing in the free Earth Day concert across the Mall? Would anyone, in other words, come to the National Math Festival? Washington worried for naught. People came to the National Math Festival in droves. Official estimates put attendance upward of 10,000. Visitors young and old thronged the Smithsonian’s Enid A. Haupt Garden, the Ripley Center next door, the National Museums of Natural and American History across the lawn- turned-construction-site. They enjoyed mathematical balloon twisting, an exhibition of math-inspired art, lectures about Archimedes and Minecraft and fair lane assignment in BMX bicycle racing. Organized by the Mathematical Sciences Research Institute (MSRI) and the Institute for Advanced Study in cooperation with the Smithsonian Institution, the National Math Festival made good on its promise to “enliven the National Mall with dozens of interactive math experiences.” Ivars Peterson indicates a population distribution created by MAA at the National Math Festival the hands of people touching (and staining) a sharp corner at For its contribution to the festival, MAA coaxed its the National Gallery of Art’s East Building. onetime Director of Publications Ivars Peterson out of semi-retirement to lead a Math on the National Mall the two-foot smudge, tapered at both ends, represents tour. Decked out in several MAA monograms, Peterson all the passersby who have reached out and touched the walked grandmothers, schoolchildren, and teachers enticingly sharp corner. through the mathematical aspects of the monuments, Download Peterson’s “Field Guide to Math on the museums, and lawns at the heart of the nation’s capital. National Mall” at KWWSELWO\,9'$.. He pointed out the wrench-proof pentagonal lug nuts on fire hydrants and the Möbius nature of the recycling Getting Students Involved symbol. He explained why his Twitter page (KWWSV The National Math Festival relied on an army of WZLWWHUFRPPDWKWRXULVW) features a photo of Kenneth volunteers to man tables inside the Ripley Center and Snelson’s Needle Tower. activity stations in the Smithsonian’s Haupt Garden, and Extending his arm to the lavender-pink marble, college students made up much of the labor force. Peterson pointed out that the discoloration on the The Society for Industrial and Applied Mathematics 19-degree corner of the National Gallery of Art’s East (SIAM) provided funding for more than 60 students Building serves as a population distribution. He said that from eight universities to staff the 20 exhibits in the MEROW K. 0$$)2&86v-XQH-XO\vPDDRUJIRFXVKWPO 5 National Museum of Mathematics’s Math Midway at the Library of Congress to celebrate public and private (KWWSPDWKPLGZD\RUJ). support for basic scientific and mathematics research. Members of Eve Torrence’s Art of Mathematics class Then, on April 17, MSRI and the Children’s Book at Randolph-Macon College led activities sponsored by Council held a press conference to announce the the Bridges Organization’s MoSAIC outreach program inaugural winners of a new youth book prize, (PRVDLFPDWKDUWRUJPRVDLFSODQ . They helped visitors Mathical, that honors inspiring math-related fiction build icosahedrons and dodecahedrons decorated with and nonfiction for readers in grades pre-K through 12. The 2014 winners were Have You Seen My Dragon? by Steve Light, One Big Pair of Underwear by Laura Gehl, “The public day was bigger, Really Big Numbers by Richard Evan Schwartz, and more diverse, and had more Nearly Gone by Elle Cosimano. Read more at KWWS PDWKLFDOERRNVRUJ. excitement than I’d dreamed.” —David Eisenbud, MSRI Director More Festivals MSRI Director David Eisenbud said he could not be happier with how the first-of-its-kind festival played Persian patterns, construct the five Platonic solids from out. “The public day was bigger,