I have also seen uneraseable chalk boards, and boards where the chalk wouldn't adhere.
Besides, the chalk powder is a great health hazard, and the sound is a great distractor. There's a reason everybody switched into white boards, and it's not because of novelty.
About smart boards, they are great for remote conferences, and for mixing pre-made content with writing. I don't think they are worth the hassle (unless you do remote conferences a lot), but they are not all downsides either.
Nonsense. Some individuals with pre-existing breathing conditions may have those conditions exacerbated by inhaling chalk at unusual levels, but to say that chalk powder by itself is a great hazard is nonsense on stilts.
Besides, the chalk powder is a great health hazard, and the sound is a great distractor. There's a reason everybody switched into white boards, and it's not because of novelty.
About smart boards, they are great for remote conferences, and for mixing pre-made content with writing. I don't think they are worth the hassle (unless you do remote conferences a lot), but they are not all downsides either.