October/November 2018 • Volume 12 • Number 1 To Foster and Nurture Girls’ Interest in Mathematics An Interview with Kri stin Lauter, Part 1 Umbrellas, Part 1 The Needell in the Haystack: Learn by Doing: Cardinality Blended Thanksgiving Dinner and Stacked Circles, Part 4 Compressed Sensing Systematic Counting, Part 2 Anna's Math© JournalCopyright 2018 Girls’ Angle. All Rights Reserved. Notes 1from the ClubClubClub From the Founder Girls’ Angle Bulletin We are thrilled to open this issue with the first of a multi-part interview The official magazine of with Dr. Kristin Lauter of Microsoft Research. Dr. Lauter and Microsoft Girls’ Angle: A Math Club for girls Research have provided major financial support to Girls’ Angle through Electronic Version (ISSN 2151-5743) the years and we are grateful. - Ken Fan, President and Founder Website: www.girlsangle.org Email:
[email protected] This magazine is published six times a year by Girls’ Angle to communicate with its Girls’ Angle thanks the following for their generous members and to share ideas and information about mathematics. contribution: Individuals Girls’ Angle welcomes submissions that pertain to mathematics. Uma Achutha Toshia McCabe Dana Albert Mary O’Keefe Nancy Blachman and David desJardins, Stephen Knight and The print version of the Bulletin is printed by founders of the Julia Robinson Elizabeth Quattrocki Knight the American Mathematical Society. Mathematics Festival, jrmf.org . Junyi Li Bill Bogstad Alison and Catherine Miller Ravi Boppana Beth O’Sullivan Editor: Jennifer Silva