Also different colors on whiteboards is occasionally helpful for clarity, e.g. color-coding an equation to a line in a graph. But that's pretty minor.
You know, the worst part that makes them unbearable and a literal health hazard to use.
Yes, because I carry large amounts of water around with me for every lecture that I teach. Seriously? The board is covered with dust, the chalk tray is covered with dust and the floor nearby is covered with dust. No one cleans them at my school.
The fix is just to use whiteboards which are just better for everyone who doesn't have a fixation with chalkboards.
You could often see him walking around campus, covered in a fine white dust, looking like a ghost.
It's been 30 years, and I couldn't remember his name, but man do I remember his lectures.
Update: after typing this, I searched for him, and unfortunately found him almost immediately. He just passed away, and there was a memorial to him on the front page of his math department: https://www.math.fsu.edu/DepartmentNews/Articles/Fac_Nolder....
I note this line from the memorial: His students marveled at his ability to draw a perfect circle on the blackboard with a single stroke.
Here's to you, Dr. Nolder!
Especially since at least once a week my Greek and Roman history teacher in prep school would throw a chalk nub at me and mis-pronounce my name. Chalk, funny. A marker not so much.
You can't tell when they will run out. This is not true, they fade out not stop suddenly. Also, it is always possible to carry a spare marker or two.
Hand writing is worse with markers. Then look at what you've written and make it better.
White boards deteriorate faster. I currently use white boards that are a sheet of reinforced glass pained white on the reverse face. They've been installed for 10 years and look the same as they the day there were installed.
Permanent markers destroy a whiteboard. The glass boards make it a little bit of work but it instant destruction.
Chalk is less damaging to the environment than marker pens. This is true but can be mitigated with re-fallible pens.
Special "chemicals" are needed to clean a white board. The chemical that I use is water in order to make the cleaning rag damp. The same as I use for chalk.
"chemicals" isn't inherently bad of course, if that needs saying. Don't drink the cleaning spray and you'll be fine
Alternately, whatever chemicals are in the marker ink will dissolve previous marks and leave the whiteboard surface intact. Just right over what was written before and it will melt
I can be a blithering idiot talking math to someone without props but in front of a chalkboard I can be the second coming of Galois.
No, whiteboards don’t give the same buff.
Actually, google search agrees with me - if you search for the title here + hackernews, it says that it saw this post and several of the comments 6 days ago (apologies that I can't link to the cache as this is no longer a feature of Google).
Why are all the post and comment times here saying less than a few hours ago?
This post number is: https://news.ycombinator.com/item?id=45557970
A post from 7 hours past is: https://news.ycombinator.com/item?id=45630962
You can see from the ID number that this post really is much older than seven hours.( bonus l33tc0d3 qu3est: knock up something to probe and plot posts per unit time, etc. ( I'm taking my dad to the shop instead ) )
* https://news.ycombinator.com/item?id=26998308 * https://news.ycombinator.com/pool
(Personally, I have a strong aversion to falsifying public information like this, and I hope that they will prioritize implementing this better.)
Unlike Reddit, the ordering of HN posts isn't only a function of the numbers of votes, number of comments, and time. Some other moderation activity can cause a front page post to suddenly be buried many pages deep.
chermi•6d ago
I'm curious about the phenomenon they mentioned of "circles being smaller with markers". I definitely noticed that when teaching my overall font size decreased on markers vs. chalk, even when using the skinny chalks. But the effective tip size even with small chalk is larger than that of whiteboard markers. So I wonder if we had big ass whiteboards with big ass tips on the markers if the writing style would be more similar. Or if it's more a function of the resistance you get with chalk+chalkboard. Could we make a whiteboard+marker that had more resistance? Like some hall effect or something. Sounds too complex relative to just using chalkboards.
That being said, a downside I didn't see mentioned was chalk dust. I have asthma but still prefer chalk, but I did not appreciate having to pound the dust out of the erasers when I was in grade school. I wonder if they could make the chalk magnetic and have magnetic trap at the bottom or something. But again too complicated.
Any
jncfhnb•6d ago
gucci-on-fleek•6d ago
I think that whiteboard vs chalkboard is just personal preference/cultural, and that the explanations in the article are just trying to justify it (which is totally fair IMHO). So I don't think that there's any need to "fix" that problem with whiteboards.
ido•6d ago
curt15•6d ago
griffzhowl•6d ago
https://youtu.be/GbqA9Xn_iM0?si=Cy7EQOvPtoRqgmhc&t=1070
chermi•6d ago
danielbln•6d ago
chermi•6d ago
Or my grade school never knew better, which is quite possible given its size/location. Or they thought it was funny to make kids deal with all the dust?
crazygringo•6d ago
If you wipe with a sponge, you can't really go on to use it immediately can you? Like you can't write well on a moist chalkboard?
aitchnyu•6d ago
titanomachy•6d ago
Doxin•6d ago
Edit: note you can also write on a wet chalkboard just fine. The tactile experience is just a little worse.
ido•5d ago
bitwize•1h ago
stuaxo•5d ago