God I hate Common Core.
(The one and only thing I will ever say I like about the POTUS, (I refuse to say his name in this sentence) is that he and his advisors are working to get rid of common core.)
What in gods name is common core ?
The whole world is teaching maths to people the normal way, why do you have to throw in random drawings and shit? Its a bloody substraction, you write it down and solve it.
I'm actually afraid of how they teach you about equations, let alone differential equations. These can be confusing enough on their own, but if you shroud them in a cloud of shitty drawings theres no way you don't get lost.
To be fair, Common Core refers to the standards of what a student must understand by a given grade level, this is more like a poor implementation of those standards. That being said, this BS is the most ridiculous GD thing EVER, and is reflective of the failure of US bureaucracy. Such methods might have a place in a remedial setting where the traditional approach has already failed to produce understanding. For example: I never taught to think of 8+5 as 8+2=10 then 10+3=13, that's the type of mental shortcut that I developed myself, and one which is hard to explain to someone else. So maybe only try to explain that if the student has failed to understand the standard approach.
Her method is fine when the subtraction is straightforward like that, number lines (or having a mental image of one) come in very handy when it is more 'tricky', say 275-187.
So idk what this common core thing is about, but in my country we were taught that you should substract the digits from each other, so starting from the back we had 7-6 which is 1, 2-1 which is 1, and 4-3 which is 1. If the number above was lower than the number below, for example 123-56, then you'd have to mentally up the number above by 10, so instead of 3-6 you'd mentally do 13-6 and then add the remaning 1 to the next below digit. So 123-56 would be 13-6 which is 7, you put the one to the next below digit so it becomes 12-6 (originally it would be 12-5 but we added the 1) which is 6, again you remember the 1 and then it's 1-1 which is 0. So 123-56 = 67 and I hope that's correct otherwise I'm gonna look like a nutjob.
Common Core is designed to provide a better understanding and ease with the subjects, it is also designed to build upon itself over the 12 years of school. So *giving it the benefit of the doubt and not yet having had to deal with it* it isn't about knowing a simple pair of numbers being subtracted (427-316 =111 is much easier the standard way rather than 427 - 100, -100, -100, -10, -10, -1, -1, -1, -1, -1, -1, -1=111) but for application in future maths (X -A, -B, -C, etc. = Y), (X/Y - A/Y, -B/C, -B/Y = Z/Y) etc. Find the "easy" things to get closer to the solution. There are other stupid looking problems, such as X-Y= give the answer to the nearest "10", you look at 100-61=X and go "easy 39" but they're not looking for the exact answer, they're looking for "It's close to 40, answer = 40" so you can look at harder things and be able to go "The answer should be near X, if I work it out and get an answer very far from X I did something wrong and need to recalculate".
I know this is 5 weeks old, but if ever used plug and chug in college the answer would be marked wrong immediately, even if I got the answer right to 3-4 decimal places.
(The one and only thing I will ever say I like about the POTUS, (I refuse to say his name in this sentence) is that he and his advisors are working to get rid of common core.)
I've figured out more from cheating than I've learned in class.
The whole world is teaching maths to people the normal way, why do you have to throw in random drawings and shit? Its a bloody substraction, you write it down and solve it.
I'm actually afraid of how they teach you about equations, let alone differential equations. These can be confusing enough on their own, but if you shroud them in a cloud of shitty drawings theres no way you don't get lost.