October Remainders

Awesome Internetting from the last month.

New Blog Subscriptions

  • I met Nicholas Patey at a workshop in San Bernardino. He wrote up a summary of some of our work that made him seem like a solid addition to my network.
  • I added Amy Roediger to my blogroll (my short list of must-reads) because more than most bloggers I read she has an intuitive sense of how to create a cognitive conflict in a class. (See: two sets of ten pennies that weigh different amounts. WHAT?!)
  • I subscribed to Dani Quinn. My subscription list skews heavily towards North American males and she helps shake me out of both bubbles. She also wrote a post about her motivations for teaching math I found resonant.
  • In her most recent post, Leslie Myint wrote, “Apathy is the cancer of today’s classroom.” Subscribed.

New Twitter Follows

  • I met Chris Duran in Palm Springs. Liked his vibe.
  • Leah Temes plunked herself down at my empty breakfast table in Portland last month and started saying interesting things. Then she told me I should follow her on Twitter with the promise of more interesting things there. With only two tweets in the last week, though, I’m getting antsy.
  • I subscribed to Peg Cagle because she understands the concerns of Internet-enabled math teachers and she also understand the politics that concern the NCTM board of directors.

Press Clippings

  • I was interviewed for the New York Daily News about PhotoMath, which at one point in Fall 2014 was going to be the end of math teaching.
  • An interview with some kind of education-related Spanish-language blog.


I'm Dan and this is my blog. I'm a former high school math teacher and current head of teaching at Desmos. He / him. More here.


  1. Hi Dan,
    Looked all over for the “math dial: that was referenced by Nicholas Patey. Would you point me in the right direction?

  2. Hey Dan, Thanks for the follow. I love the way you encourage everyone to keep sharing, thinking, and improving. I’ve been mooching off the MTBoS for a while. I’m hoping to get more involved and contribute.

  3. Hi Dan,

    Thanks for sharing the Pythagorean Theorem iBook. The whole book was designed with your “developing the question” and the “3 Act Math” ideas I’ve learned from you and this community.

    Hope people can find a use for it in their classrooms.