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Tydlig – Calculator Reimagined for iPad and iPhone

tydligapp.com

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Re: Tydlig – Calculator Reimagined for iPad and iPhone

#51

Earlier quoted context omitted.

Just a musing: perhaps its considered not as valuable an investment to program since a (the?) primary market is students, and students are probably not allowed to use phones on tests for obvious reasons (internet connectivity, texting questions to each other, overall distraction). However, TI's are state approved or whatever.

It's so sad that kids with iphones aren't allowed to use phones on tests. They're being tested in an archaic context for archaic purposes. Under what circumstances are people going to be working without internet access? School has a lot of catching up to do with the real world. :(

For any field, there's always some basic knowledge that anyone studying or practicing it simply has to have if they're going to be at all effective. A well-written test should be checking that the students have acquired that knowledge (which can be much of the course content) and can apply it appropriately to problems.

Anyone with an internet connection can easily find out, for example, how to add together two ints in Java. But if someone took an introductory Java course and couldn't do that at the end of it, then they don't deserve to pass because they've clearly not learned what they were supposed to. If they were actually trying to program something and had to look up basics like that every time they used them, they would be so slow as to be completely useless. Or consider someone with a more time-critical job like a surgeon - they can do specific research beforehand but some level of knowledge (surgical techniques, how to use their tools, anatomy, etc.) is simply going to have to be in their head at the moment they need it or their patient could die.

Also, phones and internet access don't just provide knowledge, they're a way to communicate with everyone else in the room. If you want to see if any particular person has actually learned the material, you obviously can't allow that.

Re: Tydlig – Calculator Reimagined for iPad and iPhone

#52

Earlier quoted context omitted.

Never been allowed to use a TI for exams in the UK. I've only ever been allowed to use a Casio.

I am currently in Year 13 in London. You are definitely allowed TI in the mathematics exams (A-Levels). TI-89 is one of the only that is banned because of its CAS. Friends in the French system are allowed the TI 89 though.

Yep, I did Maths A-level in the UK back in the 90s, and a TI graphing calculator was basically a requirement for the exams.

Re: Tydlig – Calculator Reimagined for iPad and iPhone

#53
post #51

Earlier quoted context omitted.

It's so sad that kids with iphones aren't allowed to use phones on tests. They're being tested in an archaic context for archaic purposes. Under what circumstances are people going to be working without internet access? School has a lot of catching up to do with the real world. :(

For any field, there's always some basic knowledge that anyone studying or practicing it simply has to have if they're going to be at all effective. A well-written test should be checking that the students have acquired that knowledge (which can be much of the course content) and can apply it appropriately to problems. Anyone with an internet connection can easily find out, for example, how to add together two ints i…

> If they were actually trying to program something and had to look up basics like that every time they used them, they would be so slow as to be completely useless

Isn't that the point of timed tests? You can structure a test such that the person who needs to look up how to add two ints in Java will waste so much time that they wouldn't be able to finish the test. And if they can search for and apply this knowledge quickly enough, then maybe they've proven that they won't be slow if they have to do it in the real world.

My favourite exams were open book but still hard/long enough that if you didn't already know 95% of the material, you simply wouldn't have time to complete it.

Re: Tydlig – Calculator Reimagined for iPad and iPhone

#56

This looks closer to Mathematica/Maple/MATLAB than a basic calculator, although still nowhere near the power of those. Of course 1/0 should be +Infinity, not ?... (Disclaimer: I have a Mathematica console always open on my desktop, and regularly use it for all kinds of calculations.)

Bingo. If I'm in front of a computer, Mathematica. If not near one, then Wolfram|Alpha app/PCalc Lite on my iPad, else TI-83. But I've had my eyes on the HP Prime for a while. That'd be a huge jump from the 83!

Re: Tydlig – Calculator Reimagined for iPad and iPhone

#57
post #15

No RPN. Neckbeard status confirmed. Calculators are still an unsolved problem for me on glass devices to the point I still religiously carry around an HP50G even though its 6x the size of my phone. Also from some bad experiences, it appears that some "app" calculators are also seriously badly implemented. Even basic trig ops can return stupid values at extremes which makes them untrustworthy. Plus none are reasonably…

Yes. I really want a decent, pretty, RPN calc on all the platforms I use. Which rules out any HP emulator. I've got several amazing HP calcs gather dust in a drawer; I want something better than that.

I've been pleasantly surprised with the built in calculator that ships with OSX; it's got a decent RPN mode, good keyboard support, and a nice stack display. Not brilliant, but better than what I've found for Windows or Android. :-/

Re: Tydlig – Calculator Reimagined for iPad and iPhone

#58

Earlier quoted context omitted.

Just a musing: perhaps its considered not as valuable an investment to program since a (the?) primary market is students, and students are probably not allowed to use phones on tests for obvious reasons (internet connectivity, texting questions to each other, overall distraction). However, TI's are state approved or whatever.

It's so sad that kids with iphones aren't allowed to use phones on tests. They're being tested in an archaic context for archaic purposes. Under what circumstances are people going to be working without internet access? School has a lot of catching up to do with the real world. :(

I think it's a shame computer like devices (iphone, ipad, what you want) are not allowed. Learning to use them efficiently in a time constrained context would be a really valuable skill.

Internet access is a lot more complex though, you'd have to filter what they can access and monitor everything every student is accessing, and that doesn't seem worth it for most tests. Image a scenario where the students just throws any question on a random looking site and some hired expert on the other side writes appropriate answers on the fly. Your test won't have any meaning anymore.

Re: Tydlig – Calculator Reimagined for iPad and iPhone

#60
post #53
post #51

Earlier quoted context omitted.

For any field, there's always some basic knowledge that anyone studying or practicing it simply has to have if they're going to be at all effective. A well-written test should be checking that the students have acquired that knowledge (which can be much of the course content) and can apply it appropriately to problems. Anyone with an internet connection can easily find out, for example, how to add together two ints i…

> If they were actually trying to program something and had to look up basics like that every time they used them, they would be so slow as to be completely useless Isn't that the point of timed tests? You can structure a test such that the person who needs to look up how to add two ints in Java will waste so much time that they wouldn't be able to finish the test. And if they can search for and apply this knowledge…

On the other hand, if you allow outside communication (such as unrestricted access to the internet), you open the door for "I'll pay someone who already knows this stuff to phone in the answers for me" - which isn't generally an applicable skill in the real world.

As an aside, I hated open book exams - if you were talented and knew the material, you could typically blast through a closed-book examination in half the allotted time and get out of there, while the open-book exams were far longer and more tedious.

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