General Discussion
In reply to the discussion: 8/2(2+2) what do you come up with? [View all]Ms. Toad
(34,193 posts)Your first line makes no sense.
I also generally think that common core - like the "new math" you likely learned as a child - is mathematically sound. Unfortunately, like new math, it is largely taught by people who don't understand the logical basis for it. That makes it a frustrating, meaningless exercise. I didn't understand the power of "new math" until I was working on my Master's degree in applied math, because it was taught as rote exercises, completely disconnected from its mathematical power.
Common core doesn't have the mathematical power of "new math," but it is draws on things people of our age did because they made math without calculators easier. Some of the crazy addition and subtraction rely on the same principles we used to use to count out change by counting up to the nearest coin, then to the nearest bill.
That said - I don't have a clue what you mean by your first line.