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Geoff Krall, PhD @geoffkrall.bsky.social · 11h

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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Geoff Krall, PhD @geoffkrall.bsky.social · 12h

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

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Geoff Krall, PhD @geoffkrall.bsky.social · 13h

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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Geoff Krall, PhD @geoffkrall.bsky.social · 14d

Oh yeah Liping Ma (1999?) is a biggun

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Geoff Krall, PhD @geoffkrall.bsky.social · 14d

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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Geoff Krall, PhD @geoffkrall.bsky.social · 14d

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

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Geoff Krall, PhD @geoffkrall.bsky.social · 14d

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

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

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Geoff Krall, PhD @geoffkrall.bsky.social · 14d

Silk Song

Geoff Krall, PhD @geoffkrall.bsky.social · 23d

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!

Geoff Krall, PhD @geoffkrall.bsky.social · Sep 4

Update: that octopus eyeball is a problem

Geoff Krall, PhD @geoffkrall.bsky.social · Aug 14

Update: the show rules

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Geoff Krall, PhD @geoffkrall.bsky.social · 28d

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

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Geoff Krall, PhD @geoffkrall.bsky.social · 28d

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.

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!

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Geoff Krall, PhD @geoffkrall.bsky.social · Sep 4

I started levitating and/or shaking I don't really remember because I was freaking out!

Geoff Krall, PhD @geoffkrall.bsky.social · Sep 4

Update: that octopus eyeball is a problem

Geoff Krall, PhD @geoffkrall.bsky.social · Aug 14

Update: the show rules

Geoff Krall, PhD @geoffkrall.bsky.social · Aug 13

oh shoot I forgot to watch alien: earth. I'll rectify that tonight

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Geoff Krall, PhD @geoffkrall.bsky.social · Aug 20

I am excited to watch episode 3 tonight. I'm bummed that there's only one episode.

Geoff Krall, PhD @geoffkrall.bsky.social · Aug 14

Update: the show rules

Geoff Krall, PhD @geoffkrall.bsky.social · Aug 13

oh shoot I forgot to watch alien: earth. I'll rectify that tonight

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Geoff Krall, PhD @geoffkrall.bsky.social · Aug 13

ha ha. I'm taking in my first in-person rockies game this Sunday as part of a back-to-school thing. I assume tickets were cheap

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Geoff Krall, PhD @geoffkrall.bsky.social · Aug 13

simple and fun way to show median vs. mean!

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Geoff Krall, PhD @geoffkrall.bsky.social · Aug 13

oh shoot I forgot to watch alien: earth. I'll rectify that tonight

Geoff Krall, PhD @geoffkrall.bsky.social · Aug 8

Yeah I noticed it a few months ago.

On the flip side, imagine how excited I was when I saw there were a bunch of new Vi Hart videos just waiting for me at vimeo!

Geoff Krall, PhD @geoffkrall.bsky.social · Aug 7

BTW Vi Hart's videos are available on Vimeo. Apparently they pulled their YT videos due to bad Terms of Service.

The Vimeo views are in the dozens, rather than in the millions as was on YT. Consider becoming a Vi patreon.https://www.patreon.com/vihart

Geoff Krall, PhD @geoffkrall.bsky.social · Feb 4

Currently this is the only available video on Vi Hart's YouTube page.

youtu.be/hmKix-75dsg?...

On Gender

YouTube video by Vihart

youtu.be

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Geoff Krall, PhD @geoffkrall.bsky.social · Jul 26

Whoa this is phenomenal! Thanks so much for sharing these !

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Geoff Krall, PhD @geoffkrall.bsky.social · Jul 25

I'll be teaching a 1-hour seminar course for first time graduate teaching assistants in math. Any recommendations on quick/digestible articles or excerpts for such students? Just things with easily implementable practices for folks who may or may not have taught before.

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Geoff Krall, PhD @geoffkrall.bsky.social · Jul 21

For context, the problem is asking things like "at which point is f(x), f'(x), f''(x) greatest/least?"

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Geoff Krall, PhD @geoffkrall.bsky.social · Jul 21

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?

"A graph of a smooth blue curve with two local minima and one local maximum. Six vertical dashed lines labeled x1 through x6 are shown beneath the curve along the x-axis. The curve starts high to the left and decreases to a minimum just after x1. The function then increases higher through x2 and achieves a local maximum at x3. The function is decreasing when it passes through the y-axis and decreasing more steeply at x4. The function achives a deeper minimum at x5 before rising steeply through x6.

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Geoff Krall, PhD @geoffkrall.bsky.social · Jul 4

When I applied to Baylor for undergrad I had to choose a denomination of faith, which I did not have or know anything about (raised Catholic, very lapsed). I chose something called "Disciples of Christ" because that sounded like something the university wld like. To this day I've no idea what DoC is