this post was submitted on 20 Sep 2024
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[–] [email protected] 182 points 1 month ago (3 children)

If a kid is smart enough to figure this out and make it work for them, they're gonna be fine...

[–] [email protected] 89 points 1 month ago (1 children)

Yes, but the kids buying the modded devices may not be

[–] [email protected] 25 points 1 month ago

good. they will learn not to buy their way out of a problem at least.

[–] [email protected] 78 points 1 month ago (4 children)

Back when we were doing quadratic equations; I wrote a program on my TI-84 that would ask which parts of the equation you already had, and would fill in the rest for you.

My teacher liked it so much he bought a transfer cable for those calculators so he could get a copy for himself. Then used to to grade tests.

[–] [email protected] 44 points 1 month ago (3 children)

I did the same thing. It was allowed in general, with the correct thought, "if you can code it yourself, you know the content"

I had another "program" that would fail to run but that's because I wrote notes into it. Doubt that was allowed.

[–] [email protected] 18 points 1 month ago (2 children)

Here in NZ they do a factory reset on your calculator at the start of every exam.

[–] [email protected] 18 points 1 month ago* (last edited 1 month ago)

Oh I would have been so pissed. I was programming on my calculator 24/7 instead of my classes.

I wrote a sudoku "editor"

I put that in quotes because I had a grid that could be navigated, arrows moved, storing the numbers, had number entry down. And when it was time to implement the solver, I learned the hard way what p vs np is.

[–] [email protected] 6 points 1 month ago (1 children)

They did that here too, but students would use a cheat program that made it look like teachers were resetting it, but really the memory was safe

[–] [email protected] 1 points 1 month ago (1 children)

I don't remember if they fully closed the loopholes, but there are inputs that programs cannot catch unless you actually replace the OS.

[–] [email protected] 1 points 1 month ago

My memory is pretty hazy but the cheat application emulated the process that teachers used to do a system reset.

Iirc, it let you press menu, select reset, confirm, and showed the (fake) confirmation screen.

Also IIRC, you had to install it from Mirage OS, which I don't think was an OS (?) but rather an app that everyone had to play games from.

[–] [email protected] 2 points 1 month ago

I did that but made it return success before it got to the notes. You had to scroll to get to the notes, but it looked innocuous before that.

[–] [email protected] 1 points 1 month ago

Oh god I remember doing that too. Those "programs" were the best. I even mad sure to make the code long, so that even if someone thought to take a look at the code they would have to scroll for a while to find the notes.

[–] [email protected] 16 points 1 month ago (2 children)

I could never remember the formula to calculate compound interest.

But I had no trouble writing a for loop.

[–] [email protected] 4 points 1 month ago (1 children)
[–] [email protected] 1 points 1 month ago (1 children)

I would just rebuild something in my head like this every time.

While i < n; k=k+(k*r); i++;

You'd think I could remember k(1+r)^n but when you posted, it looked as alien as it felt decades ago.

[–] [email protected] 5 points 1 month ago

The use of for makes sense.

k=0; for (i=0; i<n; i++) k=k+f(i); is the same as k=\sum_{i=0}^{n-1} f(i)

and

k=1; for (i=0; i<n; i++) k=k*f(i); is the same as k=\prod_{i=0}^{n-1} f(i)

In our case, f(i)=1+r and k=1; for (i=0; i<n; i++) k*(1+r); is the same as k=\prod_{i=0}^{n-1} (1+r) = (1+r)^n

All of that just to say that exponentiation is an iteration of multiplication, the same way that multiplication is an iteration of addition

[–] [email protected] 2 points 1 month ago

What always annoyed me was having to draw charts by hand. Just let me put the data in a computer for god's sake, the rest of the working is there... I did actually write a python function for one of my assignments which was fine, but they told me not to do it for the exam.

[–] [email protected] 4 points 1 month ago

I made one to decompose polynomials it was very good because it showed all the steps it was literally just copy what's on the calc to the page

[–] [email protected] -3 points 1 month ago (2 children)

So you didn't get the transfer cable with your calculator? Smells fishy

[–] [email protected] 11 points 1 month ago

Issued by the school; I never owned it.

[–] [email protected] 8 points 1 month ago (1 children)

you can code directly on the device, it's just a PAIN to do compared to moving the files over

[–] [email protected] 1 points 1 month ago

Can confirm, as someone who spent multiple study halls trying to program a top down shooter on his calculator

[–] [email protected] 8 points 1 month ago

As someone who was a kid who would do things like this to avoid putting in the work, no this kid will probably not be fine.