So, when Hagoromo announced that it was going out of business in 2014, it caused a rupture in the math community.”
I referred to it as a chalk apocalypse,” Conrad said. In a panic, mathematicians across America began stockpiling resources in preparation.”
I calculated how many boxes I would need to last 10 to 15 years and I bought that many boxes,” says Lieblich.Dave Bayer took things even further. “I single-handedly bought the rest of the Amazon supply in the middle of the night,” he said.
Source: How a brand of chalk achieved cult status among mathematicians – CNN
I was gifted with an old sliding blackboard in my 2nd year of teaching (and my first year of teaching Physical Science). I loved that board and was sad to leave it later in my career when I went to a new school.
There’s something special about chalk covered hands and the feel of writing on a blackboard to make a point about F=MA or the structure of an atom.
Now I want to go stock up on some Hagoromo and find a good blackboard for my children.