Geoff Krall, PhD

Geoff Krall, PhD

@geoffkrall.bsky.social

Math and the like. Asst Professor at Colorado State University. Author of 'Necessary Conditions'.

459 Followers 218 Following 522 Posts Joined Oct 2023
1 week ago

Update: it runs splendidly on Switch 2

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2 weeks ago

i had hidden an old blog post about Roger Schanck because I thought it was pretty mean of me. Turns out I shouldn't have hidden it bc he stinks. stick with your convictions folks

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2 weeks ago

Two tropes in recipe videos that I abhor:

Feeding the dog some of your food (gross)

Squishing a sandwich or burger to make the juice / cheese ooze all over the place (also gross)

(Also not a fan scraping the knife across a piece of allegedly crispy food but whatever)

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3 weeks ago
An orange feather within two script brackets. 

From the videogame Celeste

New tattoo

Ultra Bonus points for anyone that knows where it's from

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1 month ago
YouTube
Mitch & Mickey - When You're Next to Me YouTube video by D A Smith

This is genuinely such a great song. ❤️

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1 month ago

Sllllloowwwwly getting back into writing after a hectic couple of years on the new job. It'll happen I promise

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1 month ago

👑

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2 months ago

Ordered mine! Thanks to @erininthemorning.com for putting this together every year. 💟

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2 months ago

Senator John Hickenlooper (D-CO) voted for this. You can support @senadorajulie.bsky.social in the primary to vote him out. bsky.app/profile/fasc...

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3 months ago

aw man i spent the day working and writing to the "Hero" soundtrack and now I have to rewatch "Hero" for the 50th time

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3 months ago

People don't talk enough about how "Bottoms" is the best high school movie of all time

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4 months ago

(That's sneakily why I initially posted. I want to see if I can ID some of the most dreaded topics and think how to teach em less badly)

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4 months ago

hmm why is that least favorite and/or annoying?

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4 months ago

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.

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4 months ago

Informal poll - what is your least favorite / most annoying middle/high school math topic to teach? #mathsky #edusky

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4 months ago

I'm ashamed to say it, but I got in a long argument with chatgpt about the area between the polar curves r=2 and r=2sin(theta).

We have agreed to disagree.

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4 months ago

Gonna spend my extra hour tomorrow recreating all my Spotify playlists in Tidal

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4 months ago

ah I see

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4 months ago

nctm only lets you submit one session proposal?

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4 months ago

Ooooooh I would LOVE that! I had toyed with the idea of making Calc Warm ups my summer project so this would save me a ton of time that I could spend destroying my backyard instead !

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4 months ago

I do feel like Desmos Activity Builder might be a weekly (or nearly so) staple along with regular online homework.

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4 months ago

I'm teaching an *asynchronous* online Calc class in the Spring Semester. This is the first time I've taught in this manner. Any resources/blogs/videos/books/models or just plain ol' suggestions are very VERY welcome. #edusky #mathsky #iteachmath

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5 months ago

Oh yeah Liping Ma (1999?) is a biggun

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5 months ago

NCLB and RTTT policy wise

Danny Martins address to nctm (2017?)

Schoenfeld 1988 - Good Teaching -- Bad Results

Deborah Ball's work around PCK

TIMSS

Dan Meyers Ted talk

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5 months ago

Yeah it's tough to even definitively state whats PCK versus general pedagogy

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5 months ago
Three venn diagrams
1) two circles overlapping 
2) circle (pck) within a larger circle (ck)
3) same circle 
4) question mark

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

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5 months ago

Silk Song

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5 months ago

Update: tonight was the first time I've ever been watching TV and done the cover-the-eyes thing

Now that Alien: Earth is over I will now be cancelling Hulu.

Will I re-up if they make a season two? Only one way to find out!

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5 months ago

only thing I'm certain of is he could use a big ol glass of settle down juice

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5 months ago
Excerpt from Paul Lockhart's "A Mathematicians Lament"
Teaching is not about information. It’s about having an honest intellectual relationship with
your students. It requires no method, no tools, and no training. Just the ability to be real. And if
you can’t be real, then you have no right to inflict yourself upon innocent children.
In particular, you can’t teach teaching. Schools of education are a complete crock. Oh, you
can take classes in early childhood development and whatnot, and you can be trained to use a
blackboard “effectively” and to prepare an organized “lesson plan” (which, by the way, insures
that your lesson will be planned, and therefore false), but you will never be a real teacher if you
are unwilling to be a real person. Teaching means openness and honesty, an ability to share
excitement, and a love of learning. Without these, all the education degrees in the world won’t
help you, and with them they are completely unnecessary.
It’s perfectly simple. Students are not aliens. They respond to beauty and pattern, and are
naturally curious like anyone else. Just talk to them! And more importantly, listen to them!

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.

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