MTCircular Magazine

2017SAcover

FEATURES


Touching Infinity

Hyperbinary numbers and fraction trees

Samuel Coskey, Paul Ellis, and Japheth Wood

Listen, Share, Play

Lessons from preschool for problem solving

Peter Tingley

Tiling with Pentagons

Exploring newly discovered math

Judith Covington

Locked Out

A breakout box session for your Circle

Kimberly D. Adams and Donna S. Farrior

NEWS AND VIEWS

Bolognese Wins Statewide Teaching Award

Columbus MTC leader was recognized by the Ohio Council of Teachers of Mathematics

Finkel, Jones Present at International Conferences

Two MTC leaders present in Australia and Colombia

Shubin Honored with Mary P. Dolciani Award

MTC Network leader honored for bringing Math Circles to new communities

Engle, Danforth-Clayson Win Rosenthal Prize

Bay Area MTC members win national math curriculum writing contest


DEPARTMENTS

notefromaim

A Note from AIM

A commitment to ourselves, our students, and each other

MoMath-rosenthalPrize

Opportunities

Special events, recognitions, careers

dispatches

Dispatches from the Circles

Local updates from across the country

explodingdots thumbnail

Global Math Week

“Exploding Dots” from coast to coast

SUBSCRIBE FOR FREE TO THE MTCIRCULAR

MTCircularAutumn2012thumb MTCircularSummer2013thumb

Sign Up


MAGAZINE ARCHIVE

Fall 2018 Cover

Fall 2018

Unexpected packages, platonic solids, people vote, and the shape of success.

2017SAcover

Summer/Autumn 2017

Introducing social issues through math, exploring a 2,000-year-old problem, and more.

2017WScover

Winter/Spring 2017

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

More back issues, 2011 to present >


VIEW RESOURCES FROM THIS ISSUE

Page 5: Touching Infinity
  • Calkin, Neil and Wilf, Herbert S. Recounting the rationals. The American Mathematical Monthly, Vol. 107, No. 4. (2000), pp. 360-363.
  • Coins in Twoland, Joshua Zucker.
  • Recipe for 3D-printed 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 9: Listen, Share, Play
Page 12: Tiling with Pentagons
Page 14: Locked Out
Page 17: Opportunities
  • American Mathematics Competitions: tests and curriculum materials that build problem-solving 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.
Page 19: Global Math Week
  • The Global Math Project aims to engage a million students and teachers around the world during Global Math Week.
  • Exploding Dots: a favorite topic for MTCs that was developed by Global Math Project founding team member James Tanton.