Wouldn’t you want to use “turns” for that sort of thing?

Re: teaching floats; when I was working with students, we touch on floats slightly, but mostly just to reinforce the idea that they aren’t always exact. I think, realistically, it can be hard. You don’t want to put an “intro to numerical analysis” class into the first couple lectures of your “intro to programming” class, where you introduce the data-types.

Then, if you are going to do a sort of numerical analysis or scientific computing class… I dunno, that bit of information could end up being a bit of trivia or easily forgotten, right?