Welcome to the San Diego Math Teachers’ Circle!


The San Diego Math Teachers’ Circle is an informal monthly program that aims to engage teachers and mathematicians in working together on intriguing and stimulating problems. Through this collaborative process, we seek to provide teachers with an opportunity to enrich their knowledge and appreciation of mathematics. We feel that problem-solving abilities and critical thinking engender success in many fields, and that promoting these abilities in teachers will, in turn, foster them in their students.

The San Diego Math Teachers' Circle is free to all middle school math teachers in San Diego County. We meet once a month on Saturdays from October to April (click here for a detailed schedule). A light continental breakfast is provided at every meeting!

The San Diego Math Teachers’ Circle is not affiliated with any school or school district and is open to teachers from public schools, private schools, or home schools. It is a program similar to the San Diego Math Circle, but geared primarily for middle school teachers. Activities will be led by math professionals from the Art of Problem Solving, our staff, and others.

Click here for more information about us.

Upcoming Events

  • Congratulations David Honda!
    Long-time SDMTC member David Honda won first place for "best textile, sculpture, or other medium" at the 2018 Mathematical Art Exhibition held Jan 10-13 at the Joint Mathematics Meetings here in San Diego! Dave's dodecahedral 11-hole torus is shown below:
    Dave has created a series of "how-to" videos describing how to make similar sculptures.
    Posted by David Patrick
  • Mathemati-Con January 13, 2018
    Join us at Mathematic-Con on Saturday, January 13 at the San Diego Convention Center. There will be public lectures, a mathematical art exhibition (including our own David Honda from Marshall Middle School), contests, and more! The event lasts all day and is free to the general public. Visit http://jointmathematicsmeetings.org/meetings/national/jmm2018/mathemati-con to learn more.
    Posted Jan 4, 2018, 9:59 AM by David Patrick
  • Next meeting December 2 at USCD
    Our next meeting will be on Saturday, December 2 at UCSD. Dave Patrick will lead the session; the topic will be "How To Park Your Car".
    Please RSVP so that we have an idea of how many attendees we can expect. Thank you!


    Posted Nov 17, 2017, 3:38 PM by Trang Vu
  • Fall 2017 Schedule
    Our Fall 2017 schedule will be:

    October 7 at UCSD
    November 4 at SDSU
    December 2, UCSD

    Please see our Calendar page for more information.
    Posted Nov 17, 2017, 3:21 PM by Trang Vu
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About our Logo


Our logo reflects both our coastal location and the mathematical nature of what we do.  Reminiscent of a nautilus shell against an ocean background, the spiral was generated by dividing a disc into 12 equal parts and dropping perpendiculars from one ray to the adjacent one. This process creates seashell-like shape that is not only aesthetically pleasing, but also gives rise to a number of interesting math questions spanning a broad range of depth and difficulty. What type of triangles form the seashell shape? How are they related to one another? What is the length ratio of two adjacent triangles of the same color? Suppose we start at the 2 o’clock position and continue spiraling inward ad infinitum. What is the limit of the sum of the short lengths of all the triangles? For answers to some of these questions and more, click here.