Colorado only requires 160 days for districts with 5-day school weeks, but for districts with 4-day weeks (about 133 of our 178 districts), then can have even fewer so long as the instructional hours add up. The last district I taught for only had 144 instructional days. www.cpr.org/2025/03/31/w...

I saw presentations at AERA that did math textbook analysis and it made me wish that we had information that went far beyond what we get from EdReports. Pacing data would be useful, as would percentages of problems rated by cognitive demand and the use of verbal, visual, and contextual features.

I've seen this before and it's still so weird to me that it got published in a Journal of Medicine.

Anyway, crazy times. The mission of helping people learn math more deeply and powerfully seems, if anything, more important than ever.

Maybe when you're done with the LOC, you can head to Rutgers next to dig into their archives. 😉 archives.libraries.rutgers.edu/repositories...

This thread references an oldie but a goodie: bsky.app/profile/raym...

I think this article might be up your alley. Check out the six RME principles of teaching mathematics by van den Heuvel-Panhuizen and Wijers: drive.google.com/file/d/1h19l...

I occasionally think I want to write a book focused on these things, but for now, Marja's article will have to do.

Also noteworthy: I had four consecutive quarters making satisfactory progress for keeping objects out of my mouth.

Kindergartners have lots of stuff to learn.

This strikes me as well-said: "Situations that call for immediate response are very frustrating to children who have no thought processes available that permit them to answer in the time allotted."

I like that this isn't about anxiety, which sounds medical. It's about balancing skill vs. time.

Full reference:

Rathmell, E. C. (1978). Using thinking strategies to teach the basic facts. In M. N. Suydam & R. E. Reys (Eds.), Developing computational skills: 1978 yearbook (pp. 13–38). National Council of Teachers of Mathematics.

If you'd rather follow a feed that tracks the use of a bunch of #mathed -related hashtags, let me suggest this one by @afreeparticle.com:

bsky.app/profile/did:...

This sounds a lot like Sfard (1991) -- if you haven't read it, I think you'll like it.

Sfard, A. (1991). On the dual nature of mathematical conceptions: Reflections on processes and objects as different sides of the same coin. Educational Studies in Mathematics, 22, 1–36. doi.org/10.1007/BF00...

Allow me to paraphrase the quoted statement for the irony:

"I am convinced of what I have learned--not because someone explicitly told me in an article--but because I've been given opportunities to experiment in my own practice, make observations, and synthesize conclusions that make sense to me."

So far, I've seen #NCTMCHI24.