It wasn’t just “a movement” – metric became the official standard of measurement in the US during the Carter administration. The law is just ignored. It would’ve been easy enough for a school administration years after the fact to believe that metric would really become the de facto standard “any time now”, especially if the administrators had scientific backgrounds where they dealt with metric all the time.
Exactly. My point is that “letters as consonants/vowels” is a much less useful concept than most people realize. It’s completely irrational to try to hammer that into 7-year-olds’ heads, but it seems like we should have to unlearn it sometime. As it stands, you have to go to college and major in linguistics, speech pathology/therapy, or maybe English to get there.
Actually, perhaps the most defining characteristic of nouns is that they can be pluralized. Just because the “plural” morpheme (represented by the “s” in “cans” etc) isn’t represented by a change in spelling doesn’t mean it’s not there. “Garbage” is arguably already a plural (when was the last time you took out “a garbage” or “a few garbages”?), and “cattle” is a plural form of “cow”, isn’t it? You’ve never seen “a cattle”, have you?
), but, like I said, I’m not sure I see the point in trying to explain this concept before kids are ready for it.