(Part 2) Reddit mentions: The best graphing office calculators

https://www.amazon.co.uk/Casio-FX9750GII-Graphics-Calculator-FX-9750GII/dp/B0023UYQTG/ref=lp_201036031_1_1?s=officeproduct&ie=UTF8&qid=1504283033&sr=1-1 I got one of these if you guys want one.

Here the calculator most people get for A-Level Maths/Further Maths is either this one (£68/$88) or this one (£29/$38). A-Levels are the main academic qualifications in the UK for 16-18 year olds in college.

Ten? https://www.clasohlson.com/uk/Casio-FX-9860GII-Calculator/Pr363870000

Albo ten? https://www.amazon.co.uk/Casio-FX9750GII-Graphics-Calculator-FX-9750GII/dp/B0023UYQTG

CAS stands for Computer Algebra System. Here's one I just bought.

http://www.amazon.com/Texas-Instruments-N2CAS-CLM-2L1/dp/B003EK7O1G/ref=pd_sim_e_3

Wir dürfen an der HTL "nur" einen Graphikfähigen Taschenrechner verwenden.

Texas Instruments Nspire CX-CAS

Well, maybe I should have mentioned that it was a collective order. Amazon lists it with 150€. 125€ are still an awful lot of money. Additionally you are obliged to buy books and other stuff for the new school year. A tidy little sum...

Nope, most calculators with CAS are banned on tests such as the ACT, SAT, IB and some AP exams. You're in college so you won't have to worry about those exams, but some professors and other exams down the line might not let you use it.

I don't recommend getting the first first model, but if you must get a greyscale Nspire, get the one with a touchpad. or maybe even a TI-89 -- they are used by a lot of engineering students.

https://apstudents.collegeboard.org/exam-policies-guidelines/calculator-policies

You might get good mileage out of it in HS, but since College Professors won't usually let you use them on tests or exams, in college, you're gonna want to learn to do it the hard way on paper.

I would NOT advocate for paying full-price for one.

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The cheapest nSpire I see on Amazon is in the $99 range, used.

https://www.amazon.com/s?k=nspire&ref=nb_sb_noss_2

But you can get a used TI-84+ in the $70 ballpark:

https://www.amazon.com/gp/offer-listing/B007WM3MW2

Or a perfectly legit used TI-83+ in the $30 ballpark:

https://www.amazon.com/gp/offer-listing/B00001N2QU

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The keystrokes and function operations are very similar across all of the TI calculators.
So when the textbook or homework says to press <this key> then <that key> to perform something specific, that should be pretty universal for all TI calculators.

In other words, I don't think you MUST have an nSpire, unless your teacher is being lazy and doesn't want to deal with any deviation from the nSpire key layout.

Some students mind's are completely blown when the <function> key isn't located in the exact same specific location as the textbook example.

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Two suggestions if you choose to purchase your own calculator:

You sure as hell don't want to have to buy a second one.

Buy a protective pouch/case for it like this:

https://www.amazon.com/LuckyNV-Protective-Instruments-Calculator-Accessories/dp/B075LH789Y/

You sure as hell don't want alkaline batteries to leak inside it and ruin it.

Some or most nSpires come with rechargeable battery packs.
But most TI-83 and TI-84 models use 4 x AAA batteries.

Lithium batteries should last for years and won't leak/corrode like an alkaline battery might.

https://www.amazon.com/Energizer-Lithium-Batteries-Battery-Ultimate/dp/B00003IEME/

No way, I'm way more oppressed. When I tell people I'm a calculatorkin, they're like "wtf is that?".

No one understands me. I was a Casio fx-9750gii in a past life! No one understands! Check your privilidge!