Math is racist

[sguitarist18]

A comparison would be medical researchers being presented with information claiming that 5 million people die of heart disease every year (CDC says it's <700k), and that they have a treatment that will help. Then they give information that could help cancer patients, while insisting all along it's about heart disease.

Would you expect a medical researcher to take this information seriously?

[flyingace]

THe right ignoring what is actually being proposed and focusing ENTIRELY on the platitudes is almost as ludirous

Disagree; it's ALL about  the "platitudes".  If these educators were solely concerned with actually teaching the material there would be no need for the nonsense. They are using the so-called educational goals to forward their agenda.

[yos9694]

Here's a math question. Imagine a school hallway with 100 lockers in a row. They are all closed. Now a student walks down the hallway and opens every single locker. Then a second student walks by and he closes every second locker. A third student goes by and he changes the status of every third locker (i.e. if it’s open, he closes it; if it’s closed, he opens it). Then the fourth student goes by and changes every fourth locker. Mutatis mutandis until 100 have gone by.

What is the state of the lockers after the 100th student went by? It's possible that only people from certain zip codes will be able to figure this out

[yzj]

I actually went to the site you mentioned and I do see some proposals there. Meanwhile, every proposal I see is actually a great idea and it seems like the racial part of it is nothing more than marketing. It does make it a hard read to figure out what they actually want to be done.
This is a pretty common occurrence. The left makes a proposal and frames some potentially good ideas in a bunch of garbage and nonsense, the right instinctively focuses on the nonsense as if the actual proposal doesn't exist and ignores the actual proposals.

Even ignoring implementation (and the philosophical underpinnings always precede implementation- Masterpiece bakeshop being shuttered for refusing to bake a gay wedding cake didn’t just happen overnight) the idea of the verbiage and concepts being forced onto teachers and students should horrify anyone. A society based on willful and deliberate shkarim is a sick and dangerous society. It becomes an environment where there is no voice of reason, no logical imperative, and no proposal is too outlandish or horrifying to propose because logic and reason is vilified. “2+2 doesn’t equal =4” or “the right answer is racist” is not their end game. Any thinking person should be unnerved by what they are trying to accomplish here.

[Yo ssi]

I actually saw the video in the past, and it's scary how close to reality it is.

It's actually slightly off, in reality it should really be 20,002,000

[SSLPhD]

Here's a math question. Imagine a school hallway with 100 lockers in a row. They are all closed. Now a student walks down the hallway and opens every single locker. Then a second student walks by and he closes every second locker. A third student goes by and he changes the status of every third locker (i.e. if it’s open, he closes it; if it’s closed, he opens it). Then the fourth student goes by and changes every fourth locker. Mutatis mutandis until 100 have gone by.

What is the state of the lockers after the 100th student went by? It's possible that only people from certain zip codes will be able to figure this out

Thanks for the fun coding idea.  I suppose that for each locker, you can instead figure out how many times that one is modified (how many of the numbers 1-100 it is divisible by). Odd, it's open, even, it's closed. E.g., locker #1 is only modified by the first student, so it remains open for the duration.

Code: [Select]

#include <stdio.h>
void printlockers(void);
static int lockers[100];
int main(){
    int student, which;
    // initialize lockers, 0 is closed, 1 is open
    for (int i=0;i<100;i++)
        lockers[i]=0;
    printlockers();
    // play
    for (student=1; student<=100; student++){
        for (which=student-1; which<100; which+=student)
            lockers[which]=(lockers[which]+1)%2;
        printlockers();
    }
   
    return 0;
}
void printlockers(void){
    for (int i=0; i<100; i++)
        printf("%1d",lockers[i]);
    printf("\n");
}


[SSLPhD]

Here I coded the second approach and got the same answer. (I realize it's far from optimized.)

Code: [Select]

#include <stdio.h>
void printlockers(void);
static int lockers[100];
int main(){
    // initialize lockers, 0 is closed, 1 is open
    for (int i=0;i<100;i++)
        lockers[i]=0;
 
    for (int i=1; i<=100; i++) // which locker
        for (int j=1; j<=100; j++)  // which student
            if (!(i%j))
                lockers[i-1]=(lockers[i-1]+1)%2;
    printlockers();
   
    return 0;
}
void printlockers(void){
    for (int i=0; i<100; i++)
        printf("%1d",lockers[i]);
    printf("\n");
}

[justaregularguy]

Here I coded the second approach and got the same answer. (I realize it's far from optimized.)

Code: [Select]

#include <stdio.h>
void printlockers(void);
static int lockers[100];
int main(){
    // initialize lockers, 0 is closed, 1 is open
    for (int i=0;i<100;i++)
        lockers[i]=0;
 
    for (int i=1; i<=100; i++) // which locker
        for (int j=1; j<=100; j++)  // which student
            if (!(i%j))
                lockers[i-1]=(lockers[i-1]+1)%2;
    printlockers();
   
    return 0;
}
void printlockers(void){
    for (int i=0; i<100; i++)
        printf("%1d",lockers[i]);
    printf("\n");
}

wow and you did this all from your couch 👌

[yuneeq]

the real non-pirated, longer, non-weirded up version:

[yos9694]

Here I coded the second approach and got the same answer. (I realize it's far from optimized.)

Code: [Select]

#include <stdio.h>
void printlockers(void);
static int lockers[100];
int main(){
    // initialize lockers, 0 is closed, 1 is open
    for (int i=0;i<100;i++)
        lockers[i]=0;
 
    for (int i=1; i<=100; i++) // which locker
        for (int j=1; j<=100; j++)  // which student
            if (!(i%j))
                lockers[i-1]=(lockers[i-1]+1)%2;
    printlockers();
   
    return 0;
}
void printlockers(void){
    for (int i=0; i<100; i++)
        printf("%1d",lockers[i]);
    printf("\n");
}

Cool. There is an elegant numerical analysis solution though which is meant to be the point. Your brute force method of course gets the same answer. Similar to Pascal's sum of consecutive integers or the monkey & coconut problem.

[skyguy918]

Cool. There is an elegant numerical analysis solution though which is meant to be the point. Your brute force method of course gets the same answer. Similar to Pascal's sum of consecutive integers or the monkey & coconut problem.

Was just gonna comment that this is right up TED-Ed's alley - but then I decided to actually check. And, lo and behold, here it is: