Had I been in the class perhaps I'd have understood what the requirements of the quiz were and understood what a "subtraction story" is. Looks like the kid who

Had I been in the class perhaps I'd have understood what the requirements of the quiz were and understood what a "subtraction story" is. Looks like the kid who flunked that quiz did sort that one out. You might not like the idea of a "subtraction story," "math story," "counter," etc. I am not really a huge fan off the bat, though I'd need to research to understand the principles behind it before I made any strong judgment. If you want to vent righteous fury somewhere, then attack Pearson, who wrote the quiz and introduced these terms. I'm all in for criticizing textbook companies - they are completely horrible leeches who produce minimum quality work to leech capital out of education funding in a totally parasitic and damaging relationship. They constantly release minor needless updates to books and end publication of past editions so districts can't replace books but regularly have to buy new full sets they don't really need. However, you'd be misdirecting vitriol if associate this with Common Core, since both the inept greedy textbook publishers, and the math ideas in the ideas that bother you aren't actually a part of the standard, but have been around since before that standard ever existed.