Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

Mathematicians are hoarding a type of Japanese chalk (2015)

gizmodo.com

Post reply on HN
Print view View original

121–126 of 126 posts

Re: Mathematicians are hoarding a type of Japanese chalk (2015)

#121

Post by Hextinium »

moftz wrote: post #81
spicytunacone wrote: post #62

Earlier quoted context omitted.

I had a math instructor record his blackboard lectures and posted them online later that day. Just another consideration.

If the professor just recorded the lecture, I'd imagine most students would never go to class again.

As someone in college who has had their classes recorded and posted online, I still go to class because its dedicated time to my brain. There is nothing else I should be doing other than being in class.

The people who don't show up would have not showed up class recorded or not. It is very useful though when you have a morning class miss or be dead tired and not pay attention to re-watch the lecture to get a better understanding.

Re: Mathematicians are hoarding a type of Japanese chalk (2015)

#122

Post by moftz »

Hextinium wrote: post #121
moftz wrote: post #81

Earlier quoted context omitted.

If the professor just recorded the lecture, I'd imagine most students would never go to class again.

As someone in college who has had their classes recorded and posted online, I still go to class because its dedicated time to my brain. There is nothing else I should be doing other than being in class. The people who don't show up would have not showed up class recorded or not. It is very useful though when you have a morning class miss or be dead tired and not pay attention to re-watch the lecture to get a better u…

It seems like whatever recording either I or the professor make are actually useful to me later on. It's always the classes I don't record are the ones I always need.

Re: Mathematicians are hoarding a type of Japanese chalk (2015)

#124

Post by Syzygies »

jordigh wrote: post #90
Syzygies wrote: post #42

My Hagoromo chalk and eraser notes: https://www.math.columbia.edu/~bayer/LinearAlgebra/Video/Cha... CNN is doing a short web video on this chalk, and I was interviewed last week. They particularly liked my custom attache case for carrying all my colors to teach. When I drew diagrams revealing Catalan number correspondences, they were quite worried that these pictures "weren't math" and I might be hoodwinking them. Th…

I'd be surprised if you get five seconds on the final video. You might also be edited out in a way to make it look like you said something other than what you intended to convey. The Catalan diagrams will almost certainly not make the cut.

Be surprised.

https://vimeo.com/333758769

Re: Mathematicians are hoarding a type of Japanese chalk (2015)

#125

Post by patleeman »

Syzygies wrote: post #94
jordigh wrote: post #90

Earlier quoted context omitted.

I'd be surprised if you get five seconds on the final video. You might also be edited out in a way to make it look like you said something other than what you intended to convey. The Catalan diagrams will almost certainly not make the cut.

We'll see! From my experiences with reporters after being the math consultant for "A Beautiful Mind", I share your cynicism. This crew nevertheless impressed me. They'll certainly open with a closeup of my chalk attache case. The Catalan diagrams just didn't fit the prejudices that she imagines of her audience. I was interviewed with these diagrams behind me, so it will be hard to use anything I said without them app…

You taught me Linear Algebra back in 2013/2014 and I remember you were telling us about this amazing Japanese chalk you were using.

To your credit it was quite good, and produced some really great writing. I wished my other math professors had your passion. Half the time I could barely see the writing on the board after the first erasing.

Post reply on HN