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MAGAZINE ARCHIVE

A touch of infinity, pentagon tilings, lessons from preschool, and an escape room adventure.


Introducing social issues through math, exploring a 2,000yearold problem, and more.


How MTCs affect teachers’ identities and beliefs about math. Plus: Spot It and Freeing the Clones.

VIEW RESOURCES FROM THIS ISSUE
Page 4: Good things, Unexpected Packages
 Calkin, Neil and Wilf, Herbert S. Recounting the rationals. The American Mathematical Monthly, Vol. 107, No. 4. (2000), pp. 360363.
 Coins in Twoland, Joshua Zucker.
 Recipe for 3Dprinted binary coins
 Session handouts:
 Hyperbinary counting sheet (Word doc)
 Hyperbinary numbers proofs key (PDF; TeX files available upon request)
 Hyperbinary tree handout (PDF; TeX files available upon request)

Page 8: I see Platonic Solids in Your Future

Page 12: We the People
 Session handouts:
 Other MTC sessions on tilings:
 Press items:

Page 14: Locked Out
 Handout with suggested problems
 Handout with lock instructions
 Sources of good problems for a breakout box session:
 Vaderlind, Paul, et al. The Inquisitive Problem Solver. The Mathematical Association of America, 2002.
 Erickson, Martin. AHA! Solutions. The Mathematical Association of America, 2009.
 Johnson, Ken, et al. Crossing the River with Dogs. Wiley, 2012.
 Chen, Sam, et al. AMC 8 Preparation. Selfpublished, 2014.
 The Art of Problem Solving, AMC Problems and Solutions.
 Math Kangaroo, Sample Problems
 Brilliant.org
 Games Magazine

Page 17: Opportunities
 American Mathematics Competitions: tests and curriculum materials that build problemsolving skills in middle and high school students.
 Rosenthal Prize: applications are now open for a $25,000 prize for innovation and inspiration in math teaching.
