If your precision is in grams, and you measure 2.3 grams, it will be rounded down to 2 grams. If you add 2.3 grams to 2.3 grams, the resulting 4.6 will be rounded up to 5 grams. It's really simple.
-
-
So, when a doctor is prescribing medication for a child where every ml is important do you want them doing that math?
4 replies 0 retweets 0 likes -
I'm not sure what point you're trying to make here. I didn't say imprecise measurements were good, guy.
1 reply 0 retweets 13 likes -
Then it really is not simple now is it? The specificity of math depends on its usage.
1 reply 0 retweets 0 likes -
Explaining the concept of imprecise measurements to explain 2+2 potentially equalling 5 took me about 30 seconds. I thought it was pretty simple.
2 replies 0 retweets 15 likes -
Then I guess I can round your IQ down. 2.4 J of energy combined with 2.4 J of energy is 4.8 J. Unless there is a Magic way to invent energy.
1 reply 0 retweets 0 likes -
But if you're measuring megajoules...
2 replies 0 retweets 2 likes -
Well I can tell you that if you go to a class and are given 2 +2 and answer 5 it will be counted as wrong, because the question is 2 and 2 with no decimals added equals 4.
2 replies 0 retweets 0 likes -
Well yeah sure, that's because that's what the teacher is instructed to do So what As Ferris Bueller would say, real life doesn't happen in classrooms
1 reply 2 retweets 4 likes -
Replying to @arthur_affect @BacktoschoolD and
This whole stupid controversy is over actual mathematicians gently pointing out that the way we teach math is pointless (training kids to replace the calculators they have in their phones in case they need to do arithmetic in a power outage) and designed to make them hate math
2 replies 3 retweets 18 likes
A big part of which is kids being actively taught that math is *not* a language and a set of tools for humans to screw around with and have fun and try to communicate their own ideas, but a set of Eternal Truths that adults hand you to memorize and recite
-
-
Replying to @arthur_affect @BacktoschoolD and
Paul Lockhart, of course, already said all this a lot better than most people could 20 years ago https://www.maa.org/sites/default/files/pdf/devlin/LockhartsLament.pdf …
1 reply 2 retweets 7 likes -
Replying to @arthur_affect @BacktoschoolD and
ty for sharing this! (i wish i could share it with my father; he was convinced i was a math victim) in the meantime, advanced paint-by-numbers is the best idea though it does seem a little much for, well, so *many*
1 reply 0 retweets 0 likes - Show replies
New conversation -
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.