Because learning math isn't just 1+1. You might of figured it out the wrong way, but usually the thing you're learning is the stepping stone to the harder thing.
I once got a zero on a question cause I provided the answer without an explanation when the question asked for no explanation, just the answer. I had actually forgotten the long winded way of doing it and just knew what the answer was but my teacher still said no. Remember guys when paying bills as an adult be sure to use SOH CAH TOAx π^2÷fvck that ho= crippling debt
@Somervillage, well we gotta teach the hard math so the useful people go on to be scientists.(I'm not one of them)
@Somervillage, I did most of it in my head but my teacher still required I show my work. So I just started writing down each number I got in my head as I went along and she accepted it.
I always hated having to show my work but my 5th grade math teacher would burp in your face if you made excuses
@eksat, is this a reference or was your teacher that vile?
@MetalHeadTony, he was really that gross, sometimes he'd burp in your face for no reason too. Needless to say I'm phenomenal at math now
The reasoning I was given is that the method they're showing usually works best for what is being covered while the methods we wanna use may work for the question at hand it won't work for other things that they're going over
@InsaneWorm, from my understanding its mostly because the teachers have to follow thier books as they don't even know how to figure the stuff out themselves and if you deviate from their resources they just give you a bad grade or something. I wouldn't really know though as I was homeschooled and was usually given the freedome to solve problems the best way I could just as long as I solved the problems without a calculator unless the problem specified that a calculator was allowed
@G1ngerB0y, ah yes, homeschooling certainly does give you more "freedome", and it certainly sounds like it taught you what a run-on sentence is as well.
@Not him again, part of the reason I was homeschooled was because I had/have learning difficulties. Spelling is not my strong point
@G1ngerB0y, then maybe you shouldn't weigh in on something you've never experienced, just like I shouldn't assume that kids who are homeschooled are less intelligent....do you see the point I'm trying to make here?
@G1ngerB0y, As a teacher, no. It's because there's a misconception regarding this "easier" method that often translates to "it doesn't work."
Yo look up the new form of subtraction called Counting Up. Totally makes sense.
Look how rigid the shadow moves compared to his head.