With All Due Respect
With all due respect, Mr. Secretary, a follow-up question for you. If that $600 drug were only discounted 50% instead of 600%, how much would it cost?
Overthinking my teaching
The mathematics I encounter in classrooms
Latest posts
Math is not a code
I read somewhere recently the words, Math is literally a code. I won t link to the author, their words, or the context because I have zero interest in engaging directly with online argumentation right now. But I do think it s Continue reading
On Belonging, and Not
I didn t invent Which One Doesn t Belong. I ve told the story of how I came to the idea many times (notably in the teacher guide to my book), but the origins lie here: Mine isn t even the first book with Continue reading
What Makes a Pattern?
Amazing question on Twitter yesterday. @Trianglemancsd My daughter learned at school that the core unit of a pattern has to repeat at least three times to be a pattern. Do you agree? Heidi Fessenden (she/her) 🌎 (@heidifessenden) March 8, Continue reading
Posters Posters Posters! (plus a prize drawing!)
I am working on my next book from Stenhouse, a counting titled How Many? I took a little time away from that this summer to work on a set of shapes posters. I designed them, Tracy helped me refine them, and the Continue reading
Good White People
Let me tell you a quick story. A number of years ago, I was for the first time working with an immigrant population that was new to me. I had questions. I asked those questions of a colleague who had Continue reading
Which Poster Doesn’t Belong?
(Cross-posted from Talking Math with Your Kids) Two and a half years ago, I was developing Which One Doesn t Belong? (before Stenhouse had signed on to publish it). I went on a tour of elementary classrooms to talk with K—5 students all Continue reading
The New Basics
I gave a talk last week. This talk had a click-bait title, for which I am apologetic. The New Basics: Arithmetic and Algebra with 21st Century Tools. Sorry, not sorry. Here is the planned text of that talk. It should bear more than Continue reading
TURD pizza
A Truly Unfortunate Representation of Data accompanied a recent article on British pizza toppings. So much bad data representation wrapped into a single image. Make sure to read the fine print!
Reflecting over a circle
If you re reading this blog, you probably know something about reflections in geometry. You have a point (purple in diagram below) and a line (solid). If you reflect the point over the line, you get a new point (orange) on Continue reading