271–280 of 460 posts
Approximately related, I find the NumWorks calculator [1] absolutely enthralling. It has a fairly beefy modern ARM Cortex M4 processor which runs an attractive GUI written in Python. And yes, you can write and run Python on the device. The hardware is very well described [2] in human terms and electrical schematics are available. Software is totally open source and the device can be easily reflashed. I'm not sure wha…
This can be summed up pretty easily. The TI graphing calculator has no internet access and no ability to store notes. Neither ability can be easily added. As long as that is the case, they will win, because the test companies don't want to deal with people having internet access and notes. Now if Apple/Android made a simple way for a test proctor to put your phone into a single app only that you couldn't easily break…
What is a proctor, and why don't they like notes?
This can be summed up pretty easily. The TI graphing calculator has no internet access and no ability to store notes. Neither ability can be easily added. As long as that is the case, they will win, because the test companies don't want to deal with people having internet access and notes. Now if Apple/Android made a simple way for a test proctor to put your phone into a single app only that you couldn't easily break…
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This works if the device is supplied by the school, but you can't lock a student's personal device.
I just tried it on mine and it worked fine.
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There was the little known, but powerful combo called "GROUP" and "ARCHIVE". GROUP allowed you to package together a set of programs. Archive would allow you to take that group and store it in the long term memory of the calculator. You can then "clear the memory" of the calculator, but can then immediately unarchive the grouped programs and get everything back how it was. That said, I don't recall my teachers ever g…
Back in Algebra 1 my teacher had a policy that you were allowed to use any program that you wrote yourself. More teachers should do that, though it'd get challenging to enforce if it weren't just the one or two nerdy kids taking you up on it.
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You can easily store notes on a TI calculator. I had a TI-85 in college, and was occasionally guilty of writing TI-BASIC programs to make tests easier (for example, I had one which computed Euler's method).
I think a better solution is to have the school purchase all of the calculators and give them to students at the time of the exam. This also would align with driving costs down since schools will not want to pay $100 per calculator for their student body.
1. Ability to identify the right methodology;
2. Memorisation of all steps of that methodology;
3. Ability to execute the methodology correctly;
Parts 1 and 3 are important to demonstrate learning, whereas in the real world 2 is not. Denying books and notes only penalises children who have difficulty with 2, which is stupid.
> was first released in 2004 for around $120 ... still sells for nearly the same price [$102.99]... One analyst placed the cost to produce a TI-84 Plus at around $15-20, meaning TI sells it for a profit margin of nearly 50% — far above the electronics industry’s average margin of 6.7%. Wouldn't that be a 81% - 85% margin? (gross profit / revenue) Edit: I finally got through the paywalled article they were quoting. It…
This can be summed up pretty easily. The TI graphing calculator has no internet access and no ability to store notes. Neither ability can be easily added. As long as that is the case, they will win, because the test companies don't want to deal with people having internet access and notes. Now if Apple/Android made a simple way for a test proctor to put your phone into a single app only that you couldn't easily break…
The HP Prime calc has these features, has been out for years, is FAR, FAR more powerful than any TI calc I know of, including the newer CAS models, has top-facing LEDs so the teacher can know that you're in test mode at a glance, costs (and is worth) $125 or so, and has never taken off at all.
Nor have any of TI's attempts at replacing the TI-83 series, like the TI-Nspire. (Which even had a TI-83 emulation mode!)
This can be summed up pretty easily. The TI graphing calculator has no internet access and no ability to store notes. Neither ability can be easily added. As long as that is the case, they will win, because the test companies don't want to deal with people having internet access and notes. Now if Apple/Android made a simple way for a test proctor to put your phone into a single app only that you couldn't easily break…
So, whether it was a result of TI's lobbying or whatever else, the fact was and I assume still is that competing w/TI with a similarly capable, reasonably priced device is impossible because such a device cant pretend to be a TI-84, or whatever. Simply having the same capabilities and restrictions is not enough.
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Yes most of my engineering classes back in college allowed you to use a cheat-sheet. Cheat sheets are way faster than thumbing through a book or notes in a calculator. And most problems required you to show your work. Maybe you could cross-check your results and fix something. The funny thing is to an extent, the performance of the student seems to be inversely proportional to the density of the cheat-sheet. The wors…
Cheat-sheets are also far more "real world" than the fake environment many schools cling to. I don't know a single practicing engineer that doesn't have a note scribbled somewhere. My engineering school recognized this decades ago and adjusted accordingly. Now the math department? They were a different story. No calculators. Period. Ever. Made higher-level calculus... interesting. Thankfully I'd already had it in hig…
As long as you showed the working and the closest you could get without a calculator you'd get full marks (e.g. you could leave the answer as a fraction like 543/42, or as a power like 26^12).
They were quite good at my university for mathematics exams though. You were usually allowed a handwritten cheat sheet in the exam, and if you couldn't get the answer to a question that had follow-on questions they'd still give you marks for the follow-on question if you just made up an answer for the earlier question. If only the lectures weren't usually at 8 AM I might have gotten good grades.