Clock that requires math to read the time

[Maximilian Hohmann]

Hello!

(04-07-2019 10:31 AM)Thomas Okken Wrote:  The colon is used to represent ratios and division in Dutch textbooks, at least at primary school level. I assume it's used elsewhere in Europe as well, but I'm not sure about where exactly it is or isn't.

I went to school in Italy but was mainly taught by German teachers. We also used the ":" colon for division. Alternatively the "/" forward slash. But never the colon with the dash that we find on calculator keyboards. On the rare occasions when I do a calculation on paper or write an equation I still use the ":" colon sign.

Regards
Max

NB: If I remember I will ask my son what he was taught when he went to primary school in the mid-2000 years.

Edit: Did a very quick Google search for contemporary primary school textbook calculus and found lots of stuff like this: