4 ms·

> If I'm ever in charge, I'm buying chalkboards. You gotta be sure to get the super special chalk mathematicians are hoarding, too: https://www.youtube.com/wat

by rmorey 3y ago

> If I'm ever in charge, I'm buying chalkboards. You gotta be sure to get the super special chalk mathematicians are hoarding, too: https://www.youtube.com/watch?v=PhNUjg9X4g8 https://www.youtube.com/watch?v=PhNUjg9X4g8

rvnx 3y ago
Something related https://www.youtube.com/watch?v=GhawwXcQsUs https://www.youtube.com/watch?v=GhawwXcQsUs Cheers to Walter Lewin :)
AlanYx 3y ago
Hagoromo ended up not going out of business, so there's no longer any worries about finding Hagoromo chalk. It's worth the cost.