this post was submitted on 18 Oct 2024
656 points (95.3% liked)
Curated Tumblr
4045 readers
76 users here now
For preserving the least toxic and most culturally relevant Tumblr heritage posts.
Image descriptions and plain text captions of written content are expected of all screenshots. Here are some image text extractors (I looked these up quick and will gladly take FOSS recommendations):
-web
-iOS
Please begin copied raw text posts (lacking a screenshot that makes it apparent it is from Tumblr) with:
# This has been reposted here to Lemmy as part of the "Curated Tumblr Project."
I made the icon using multiple creative commons svg resources, the banner is this.
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Yup, this is what parents are complaining about when they say math has changed. Before, math was primarily about rote memorization. You just memorized that 9+7 is 16. There were multiplication tables you were expected to memorize and regurgitate ad nauseam. Sure you could count it out on your fingers, but that only works for numbers under 11. For anything above that, you just referred to your memorized addition, subtraction, multiplication, or division tables. But this also meant that numbers outside of those tables were really difficult to do in your head, because you were poorly equipped to actually calculate them out.
Common core math is attempting to make math easier to do in your head, by teaching the concepts (rather than promoting rote memorization) and helping students learn shortcuts to avoid getting lost. 9+7 is 16, but it’s also 10+6 or 8*2, which are much easier to visualize in your head without counting on your fingers.
Yep, and what happens is that when kids need help they can't explain the "new" way from the beginning and only half remember stuff which is extremely confusing to hear as a parent so then the parents get mad at the method.