Let's do math together!

2017-18 Academic Year Schedule

Tentative dates/locations

  1. 16 September 2017 Madeira High School 9:00-12:00.
  2. 19-20 October A Circle at OCTM conference in Columbus, Ohio 19-20
  3. 21 October 2017 Madeira High School. 9:00-12:00.
  4. 6 December 2017 (Family Math Night!) Wednesday evening 6:00-8:00 PM
  5. 27 January 2018 Madeira High School 9:00-12:00
  6. 24 February 2018 Madeira High School 9:00-12:00.
  7. 14 April 2018 Loveland High School(?) 9:00-12:00

We usually meet Saturdays 9:00-12:00 with coffee and snacks starting about 8:30.

As we continue to plan for the year.... please let us know what you'd like to do and learn, talk about, share.

23 February 2013 MATH CIRCLE.jpg

Follow us on Twitter: #cincymathcircle

Ohio's New Learning Standards

Our target audience/participants (YOU!)

  1. current and retired math teachers
  2. mathematicians
  3. math students, student teachers
  4. college math students
  5. anyone interested in getting together to do and talk about math, teaching math

Our schedule:

  1. We'll meet about 7 times a year - Saturdays and/or Friday afternoon/evenings
  2. We'll meet for about 3 hours each time.
  3. We will have a full day activity once a year.
  4. We'll be continuing our mathematical discussions of problem/related problems as well as classroom connections on this wiki between meetings.

What we'll do

  1. content for YOU, not just for class.
  2. problem solving strategies and activities
  3. Common Core Standards
  4. process of doing math
  5. networking
  6. trade/create classroom activities and materials
  7. recreational mathematics
  8. PD Hours, perhaps grad credit in the future

Help us advertise. Tell/bring your friends.

We're sending announcements to
  1. GCCTM
  2. OCTM
  3. UC MAT graduates
  4. UC undergrad math major's association Blackboard organization
  5. Christina Sherman at HCESC
  6. teachers from UC's high school math contest (pelikan)
  7. teachers from GCCTM's Middle School Math Competition (llb)
  8. UC pre-service STEM middle & 2ndary teachers (pelikan/gregson)
  9. High AIMS


  1. OCTM webpage
  2. OCTM facebook page (done!) Twitter, too!
  3. llb contacted the Math Teachers Circle Network to ask about connecting to their network mathteacherscircle.org
  4. 4. organize team to attend summer workshop in DC? (application in the works) (Our team is actually in DC now -17Jul)

Past meetings:

  1. 29 October 2011 Four Points on a Circle
  2. 4 February 2012 Reflecting on Reflections 1
  3. 21 April 2012 Pirate Map
  4. 15 Sept 2012 Dots and boxes
  5. October 13 Set!
  6. November 10 Tangles and numbers.
  7. 26 Jan 2013 Strange dice, liar's bingo
  8. February 23 (Mathematical card tricks)
  9. April 20 (Symmetries and laser benders)
  10. May18 (Some counting games)
  11. 7 September 2013 (Simplex lock and related puzzles)
  12. October 2013 We ran two Circle sessions at OCTM in Dayton jointly with the Athens OH circle.
  13. 8 February 2014 CHCA Middle School, Our day-long recruiting event. (Counting trains and Counting squares) Here's some pictures of the event.
  14. March 8 2014 @ Fairfield HS 9:00 - 12:00 " Perfect shuffles and long division" Here's a few pictures from today's circle.
  15. April 26 2014 @ St. Luke School in Beavercreek "Star polygons" Here's some pictures!
  16. 27 Sept 2014 Madeira High School 9:00-12:00. Taxicab Geometry.
    Here is the GeoGebraTube applet shared today: http://www.geogebratube.org/student/m130064
  17. 1 November 2014 Madeira High School 9:00-12:00 Exploding Dots (More Dots and Boxes)
  18. 6 November 2014 Liar's Bingo A Circle session at the OCTM Annual Conference in Cleveland, Ohio.
    Conducted jointly with folks from Athens and Columbus Circles
  19. 7 February 2015 Cincinnati Hill Christian Academy Middle School Problem solving using invariants Our annual, full day recruiting session and introduction to Math Circles.
  20. 11 April 2015 Diamond Oaks, 6375 Harrison Avenue, Cincinnati, OH 45247 Coffee at 8:30. Session runs 9:00-12:00.
    Topic: tic-tac-toe variants and other mathematical interesting games.
    Here's a list of questions that our discussion inspired. We may return to some of them.
    Here is a link to a peg solitaire game! AMAZE YOUR FRIENDS!! http://www.echalk.co.uk/amusements/Games/solitaire/solitaire.html
  21. 16 May 2015 Loveland High School, 1 Tiger Trail, Loveland OH.
    Topic: Math of some pencil and paper games: dots-lines+triangles=2.
    Coffee at 8:30, Session runs 9:00-12:00. Some photos from the circle and here's a video on the game brussels sprouts.
  22. 22 August 2015 Madeira High School 9:00-12:00
    Topic: Assorted problem solving ideas. We spent some time exploring the questions described in Big Products.
  23. Saturday Oct 10 2015 9:00-12:00 @ at Mount St. Joseph University. Topic: Geometry on a cube.
  24. Saturday Nov 14 @ Madeira HS 9:00-12:00. Breakfast snacks and coffee at 8:30. Topic: we'll revisit "Rational Tangles"
  25. Wednesday Dec 9 Evening PARTY 6:00-8:00 PM @ Madeira HS
    Game night! Join us for dinner (pizza) and mathematical card and paper-pencil games.
  26. Saturday Feb 20 @ Cincinnati Hills Christian Academy Middle School. Two sessions: (1) Umarked Rulers and (2) Counting patterns.
  27. Saturday Mar 19 @ Diamond Oaks Career Center. We talked about the pancake flipping problem.
  28. Saturday May 7 @ Loveland HS. We talked about programming (trinket.io) and several problems related to measuring angle and counting turns.
  29. 3 September 2016 Madeira High School 9:00-12:00. A candy sharing problem
  30. October 15 2016 Madeira High School. The mathematics of voting methods. Exeter Discrete Math and the problems we worked on: https://docs.google.com/document/d/1tACvUCTNaXzp0UBwRGVCNuALnxKa7MlLuMInoqTI7ck/edit?usp=sharing
  31. November 5, 2016 Madeira High School. An investigation of braids. https://www.mathcircles.org/files/BRAIDS_July%202010_MSRI.pdf\
  32. 14 December 2016 Madeira Junior High School. Family Math Night! Bring your family and join us for dinner and mathematical games and crafts.
  33. 18 February 2017 Madeira High School. Integer-sided triangles.
  34. 18 March 2017 Madeira High School 9:00-12:00. We talked about writing fractions as the sums of unit fractions.
  35. April 2017 Loveland High School 9:00-12:00 We learned a bit about programming, caused devices to flash lights, play tunes, and find prime numbers.
  36. 16 September 2017 Madeira High School. In preparation for International Math Week, we explored representation of numbers using Exploding Dots.

The Cincinnati Math Teacher's Circle in the News!
Thanks to Math for America for supporting our Math Teacher Circle with a $2000 seed grant!

In July 2012 four of us attended a workshop hosted by AIM on organizing and facilitating Math Circles. Not that we're experts now, but we got lots of good ideas. Here we are in front of the MAA's wonderful conference facility in Washington DC.