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What kind of board chalk is this?

by daveyp225
Tags: board, chalk, kind
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daveyp225
#1
Jun8-12, 05:40 PM
P: 88
In the following MIT video, some kind of thick chalk (not sidewalk, already tried it) is used in the lecture:

http://ocw.mit.edu/courses/mathemati...ture-2-limits/

It looks like great chalk. Or what chalk is this easy to write with?
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Pythagorean
#2
Jun8-12, 05:49 PM
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P: 4,262
didn't look at video, but:

http://www.amazon.com/Liquid-Chalk-B.../dp/B004IM79HI

coffee shops use this kind of chalk a lot because it allows them more control when drawing pretty menus on blackboards.
daveyp225
#3
Jun8-12, 05:55 PM
P: 88
Thanks for the suggestion. I have to erase a board probably 10 times a lecture, so wiping it down with water will not work well for me.


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