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Re:Texas Instruments new TI-84 Plus CE Python graphing calcu... by dharmab on Monday August 02, 2021 @10:38AM (#28037090)
They didn't patent math. They survive for a few reasons:

- Standardized testing calculator requirements are crafted in such a way that graphing calculators are allowed by specific model: https://apstudents.collegeboard.org/exam-policies-guidelines...

- Textbooks contain instructions on using TI calculators (and sometimes, if you're very lucky, Casio). Teachers can only provide personal instruction with TI because that's what the schools buy (presumably thanks to marketing and dealmaking).

Math classes are already hard for high schoolers. Having to deal with the disadvantage of being on a different platform from your peers is hard.

Re:Texas Instruments new TI-84 Plus CE Python graphing calcu... by rdtwo on Monday August 02, 2021 @10:59AM (#28037332)
The problem is that once you hit college you have to give the calculator up and use the scientific calculator for 2 years in the weedout classes
Re:Texas Instruments new TI-84 Plus CE Python graphing calcu... by isk517 on Monday August 02, 2021 @12:11PM (#28038557)
The TI-84 was worth it for how much easier it made doing assignments. The extra screen space and the ability to easily edit the equations you entered and recall past entry probably saved me hundreds of hours. Just need to make sure I was proficient enough with my Casio scientific calculator for tests and exams.