Geoff Krall, PhD
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geoffkrall.bsky.social
Geoff Krall, PhD
@geoffkrall.bsky.social
Math and the like. Asst Professor at Colorado State University. Author of 'Necessary Conditions'.
Oh man these are both good suggestions @k8nowak.bsky.social and @triangleman.bsky.social.

I've had students want to fist fight me on these concepts just this semester.
November 8, 2025 at 5:02 PM
Gonna engage some first year grad students in a conversation about content knowledge (CK) and pedagogical content knowledge (PCK).

Which Venn diagram do you think best represents our current understanding of the interaction between the two? Or what would your venn look like?

#edusky #mathsky
October 6, 2025 at 12:20 AM
Reading Lockhart is a trip. I'll go from agreeing, to vehemently disagreeing and getting red and mad, and then agreeing again all within like a single paragraph.
September 22, 2025 at 1:53 AM
I've been spending the summer adding alt text to various online graphical problems, but I could definitely use assistance if any of y'all have experience. As an example, here's a graph and you can see my alt text the picture. How would you describe it in a manner that is helpful for screen readers?
July 21, 2025 at 4:22 PM
A bit late, but watching in honor of Gene Hackman
March 6, 2025 at 2:48 AM
might need to outsource this one: I'm teaching the Chain Rule of derivation tomorrow and i want to make a Ms. Casey innie-outie Severance joke. Can someone help me out here?
March 4, 2025 at 7:38 PM
this popped in my head during class today

I'll try it out and let you know how it goes
February 27, 2025 at 2:05 PM
Eating like freaking sultans tonight
February 27, 2025 at 1:20 AM
MANY ARE SAYING
February 26, 2025 at 4:58 PM
ChatGPT doesn't understand f(x)>0.

Even when prompted, it can't figure it out.

It does suggest (once it's fully out of ideas) to go check out Desmos lol
February 21, 2025 at 9:00 PM
-138 years old 🙏
February 12, 2025 at 7:43 PM
Thinking of switching careers to full time egg mongol.
February 6, 2025 at 6:37 PM
Soccer Mommy releasing a song about and a video about Stardew Valley is a little too "this was made specifically for Geoff Krall"
January 13, 2025 at 2:11 PM
I didn't intend for it, but I ended up writing
* three (3) posts on pre-program consideration,
* three (3) posts for when you're in your program and
* three (3) posts on concluding your program.

Here's the intro post going back to the start of this project.

emergentmath.com/2024/12/18/e...
January 13, 2025 at 2:34 AM
IT HAPPENED TO ME: After years of thinking it wasn't actually a thing , I found my first rock in my beans.
December 28, 2024 at 12:55 AM
They are ready
December 26, 2024 at 12:24 AM
Real ones know
December 25, 2024 at 9:55 PM
It is also fried drumsticks night
December 23, 2024 at 12:14 AM
Negroni Saturday
December 23, 2024 at 12:03 AM
Had some nice PD time with my friends in Laramie. Always love using these Necessary Conditions cards
December 18, 2024 at 12:32 AM
I dunno Duolingo, seems like it was more
December 7, 2024 at 5:49 AM
Seen on my bike ride home today
December 4, 2024 at 10:12 PM
lol NY Regents: for what values is this function increasing
December 4, 2024 at 7:57 PM
Brilliant idea from @dandersod.recursiveprocess.com to have ChatGPT create the LaTeX code which I could then mess with to get function behavior I wanted. (see 🧵)
December 4, 2024 at 7:50 PM
Cleaning it up a bit I was able to get this beaut in just a few minutes. Thanks @dandersod.recursiveprocess.com & @mythagon.bsky.social !
December 4, 2024 at 7:47 PM