26 pointsby bookofjoea day ago7 comments
  • chermia day ago
    It's like writing on paper vs writing on a digital tablet. The difference in tactile feedback leads to better handwriting, at least for me.

    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

    • > Could we make a whiteboard+marker that had more resistance? Like some hall effect or something. Sounds too complex relative to just using chalkboards.

      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.

    • jncfhnba day ago
      My hand writing is poor and my handwriting with a stylus is worse but screen annotations on zoom have been life changing for me at work. I don’t really care that I cannot write legibly. Quick iteration on diagrams is king.
    • idoa day ago

          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.
      
      The Russian solution is to use water - wipe the board with a wet sponge.
      • griffzhowl21 hours ago
        The german way seems to be a wet sponge followed by a squeegee to wipe off excess water. Here's a masterclass from Frederic Schuller (and a rigorous advanced course in quantum mechanics)

        https://youtu.be/GbqA9Xn_iM0?si=Cy7EQOvPtoRqgmhc&t=1070

      • curt15a day ago
        Germans also squeegee their blackboards.
      • crazygringo20 hours ago
        In my school, the board was erased many times throughout the day with erasers, and then with water only at the end of the day so it would be "pristine" the next morning.

        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?

        • Doxin8 hours ago
          I've had teachers that'd waft a binder at the board while continuing to talk. you can get a decent part of the chalk board dry in under a minute doing that. It's not like you're getting the board soaking wet either. A whiff of water is plenty to clean the board.

          Edit: note you can also write on a wet chalkboard just fine. The tactile experience is just a little worse.

        • titanomachy20 hours ago
          I had a great calculus prof who would wash all the chalkboards halfway through our (3-hour) class, and dismiss all the students for a 10-minute break while the boards dried.
        • ido5 hours ago
          Squeegee like sibling comments mentioned, then it doesn't take long to dry.
        • aitchnyu20 hours ago
          We used moist chalk to leave stronger duster-resistant marks on the board.
      • chermi21 hours ago
        That sounds way better
        • danielbln21 hours ago
          Wait, you don't use water?! As a German I kind of thought that's normal everywhere, dip the sponge into water, clean the blackboard. Slamming dusty sponges together sounds.. very dusty indeed.
          • chermi18 hours ago
            Well, I only ever cleaned them fully in grade school. In undergrad I TA'ed on whiteboard, in grad school it was unfortunately all whiteboards. Except for the rare literal "chalk talk" mini-conferences I was fortunate to attend, where I just erased what I had at the end, no full cleaning. So, I guess I just never "saw how the sausage was made" and implicitly assumed the worst.

            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?

  • FiatLuxDave14 hours ago
    This discussion reminded me of my best Diff Eq prof. He would start each lecture by putting a small clock on his podium, and starting at the precise time listed for the start of the lecture. Then he would leap into action, chalk dust flying around him as he explained the subject of the day. He would often go through more than six full-size chalkboards, having a student erase a few chalkboards behind him so he could return to use the first chalkboard when he ran out of room on the sixth one. Then at the precise time scheduled for the end of the lecture, he would take the clock off the podium and leave the room.

    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!

  • effed32 hours ago
    maybe a wise use of technology?: never adopt a higher complexity tech when a lower one fit well. And white boards are less clear (to me) and markers dry (often in the worst moment). And about slides... very easy for prof, but i cannot copy a slide, always follow the reasoning, so having the things written is best, writing indeed is another side of thinking.
  • lucaspauker2 hours ago
    If it ain't broke, don't fix it
  • PeterStuera day ago
    Chalk, the Emacs of boards.
    • gentoofluxa day ago
      I tried extending this analogy to dry erase boards, and all I could come up with was MS Paint
  • CogitoCogitoa day ago
    I enjoy using chalkboards so much more than whiteboards. Other than the chalk dust, I just can't understand how anyone would prefer whiteboards over chalkboards.
    • crazygringo20 hours ago
      Yeah, it's the chalk dust. It's that simple.

      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.

      • lovich20 hours ago
        we had colored chalk for that purpose in my school for math at least
        • hollandheese20 hours ago
          There is much less selection in colors for chalk. And many of them show very poorly on chalkboards. Hagoromo's green for example, is almost impossible to make out on our chalkboards.
        • 20 hours ago
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    • aitchnyu20 hours ago
      I had some teachers allergic to chalk. They sent students to pound the dusters on the balcony.
    • hollandheese20 hours ago
      >Other than the chalk dust,

      You know, the worst part that makes them unbearable and a literal health hazard to use.

      • CogitoCogito10 hours ago
        The fact that it's still used in many places obviously means it's not unbearable. Besides if you're bothered by the dust you can use the water cleaning methods described in this very thread. It's not perfect, but I would take a chalkboard over a whiteboard anytime.
  • 20 hours ago
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