Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

This Website is hosted on an Casio fx-9750GII Calculator

fxip.as203478.net

Post reply on HN
Print view View original

251–260 of 265 posts

Re: This Website is hosted on an Casio fx-9750GII Calculator

#251

Post by professoretc »

grishka wrote: post #239
ornornor wrote: post #232

Earlier quoted context omitted.

One of my university teachers allowed us a double sided letter sized piece of paper during the exam and we could put whatever we felt like on it. This was brilliant because 1. In real life, you don’t memorize random facts. That’s what reference books and the internet is for. 2. Making the cheat sheet actually forced us to understand the material so they we could sum it up and for it on the page. By the time we were d…

A university teacher allowed us to use everything during the exam, including a laptop with an internet connection. The only rule was that you weren't allowed to use any communication with other people, like messaging someone or asking questions on forums. Needless to say, everyone passed that exam. For myself, the most-hated part of every exam session was having to memorize everything. That's what made me fail every…

I've done open-everything exams (just no collaboration) and my experience was that it didn't change the mean grade, but it did increase the standard deviation. Students who were already mostly on top of the material could look things up and double-check their work, so their scores improved. Meanwhile, students who didn't really know what they needed to spent the whole time trying to find "the answer" in the book or online (and that's not the way programming tests work!), so in the end they either left the answer blank or put something totally nonsensical, copy-pasted off the internet. In a closed-book test, they would have at least tried to figure it out on their own, and maybe gotten a few partial-credit points.

Re: This Website is hosted on an Casio fx-9750GII Calculator

#253

Post by tener »

draugadrotten wrote: post #196
tener wrote: post #184

Earlier quoted context omitted.

How is having the transcript of the presentation cheating and not just being prepared?

It's because school is preparing students for life, where it would be outrageous to have written notes while presenting or speaking. What's next, someone else writing the words for you?

How exactly is it outrageous? You are there to deliver the message in a meaningful way, not to recite such message from memory. This is no theater or the cinema where you are playing a role and must be entirely authentic as a result.

Sure, literally reading entire thing from your notes in front of your audience is bad form as it fails to build the captivating presentation. It is just distracting for those listening.

But damn if this cannot ever work for the online presentation where the speaker isn't visible.

Re: This Website is hosted on an Casio fx-9750GII Calculator

#254

Post by avgDev »

I'm not really proud of this but my 1st step into programming was writing programs to calculate things for me on the TI in high school.

At some point teachers made us delete programs in front of them before major tests.....someone else wrote a program that would simulate deleting programs and showed an empty screen which meant all programs were deleted.

I wasn't a dumb kid but I always felt like why just not program those things and have more free time? I guess I was always a dev.

Re: This Website is hosted on an Casio fx-9750GII Calculator

#255

Post by the_third_wave »

shakna wrote: post #124
the_third_wave wrote: post #119

Last year I bought I used TI for my daughter who needed it for school. I got her the oldest version, the one which takes AAA batteries and communicates with the outside world through a serial link. A project like this brings to mind the possibility of stuffing a Raspberry Pi Zero in the battery compartment, hooking it up to the school WiFi, using a terminal app on the calculator to communicate with the Pi and in that…

The ESP-01 is smaller, cheaper, less battery heavy, and already speaks serial so it wouldn't be hard to integrate it, just for the WiFi... And at a quick look there's a bunch of TI Arduino stuff out there in the wild it should be easy.

There are many ways to flay this hog, this is more of a thought experiment than a recipe for a TI-CH337. The ultimate hack would be to use a more modern version (with "high-res" screen) and replace/amend the guts with something which emulates the calculator - wabbitemu seems to work just fine [1] - but can also function in other ways. Add some key combination to switch functions and you have a mean lean cheatin' machine.

[1] http://wabbitemu.org/

Re: This Website is hosted on an Casio fx-9750GII Calculator

#256

Post by jhallenworld »

mmcgaha wrote: post #129
jhallenworld wrote: post #40

Well Casios are better than TI calculators. My current favorite calculator is Casio ES-115 PLUS2 https://www.amazon.com/Casio-fx-115ESPLS2-Advanced-Scientifi... I like it because when you enter sin(pi/12) you get (sqrt(3)-1)/(2*sqrt(2)) in mathematical notation, which is really nice for a $16 calculator. Here I'm going to hurt TI: If you need a TI-84 or TI-89 for school, the place to get them cheap is shopgoodwill.co…

Checking in with a TI-30X Pro and get the equivalent (sqrt(6)-sqrt(2))/4 also in mathematical notation. All of my work is saved when I turn the calculator back on. Plus I can just set a flag for imaginary mode without a separate complex app so everything works the same in both modes. The screen is higher resolution and the multi-tap entry is pretty darn sweet.

Annoyingly TI-30X Pro is Europe only (also costs more, but looks better quality and design)... but you are right, it looks pretty good, as does the US-available TI-36X Pro. I will give one a try. My main gripe with TI is the school requirement for the TI-84 series.

Re: This Website is hosted on an Casio fx-9750GII Calculator

#257

Post by jhallenworld »

emodendroket wrote: post #107
crazygringo wrote: post #83

Earlier quoted context omitted.

I searched for graphing calculator apps on iOS the other day and found a ton that simply attempt to recreate the TI-84, e.g. [1]. So anyone with high school kids: are they still buying $100 physical calculators? Or are they just using free/cheap apps? [1] https://apps.apple.com/us/app/graphing-calculator-x84/id1247...

There's no way they let you take the SAT with your phone out. Acceptable calculators are actually enumerated though there's more than I realized. https://collegereadiness.collegeboard.org/sat/taking-the-tes...

I'm really surprised that the open source NumWorks calculator is on that list! Also the RadioShack / Casio EC-4033 programmable from the 1980s...

Re: This Website is hosted on an Casio fx-9750GII Calculator

#258

Post by elcomet »

tener wrote: post #253
draugadrotten wrote: post #196

Earlier quoted context omitted.

It's because school is preparing students for life, where it would be outrageous to have written notes while presenting or speaking. What's next, someone else writing the words for you?

How exactly is it outrageous? You are there to deliver the message in a meaningful way, not to recite such message from memory. This is no theater or the cinema where you are playing a role and must be entirely authentic as a result. Sure, literally reading entire thing from your notes in front of your audience is bad form as it fails to build the captivating presentation. It is just distracting for those listening.…

The parent was being sarcastic.

Re: This Website is hosted on an Casio fx-9750GII Calculator

#259

Post by DrSiemer »

tener wrote: post #184
DrSiemer wrote: post #175

Earlier quoted context omitted.

One of my proudest cheats was cramming the keywords of an entire presentation in French on a tiny round piece of paper, stuck to the glass of my wrist watch, so I could literally cheat while the whole class and teacher were watching me. Somehow I actually got away with multiple glances, only receiving a single remark about "being a bit too focused on the duration of my presentation". My cousin, who has always did hav…

How is having the transcript of the presentation cheating and not just being prepared?

It was not allowed to use notes on your presentation in this class. It was a very demanding school.

The curriculum for French was to learn everything you learn on a normal school in the first two years and then spend the next 4 learning more.

Post reply on HN