5.0 out of 5 stars Incredibly useful

2026-01-11    -Blake

Absolute God-tier calculator. It excels in every discipline, statistics, calculus, algebra, chemistry - a must have. The only caveat I must mentioned is that not every professor will allow this on a calculator, due to the CAS functionality. The notes feature is useful in the lab. The only thing I don't like is the keyboard laid out as ABC.. rather than QWERTY, has absolutely no impact on its functionality. 10/10 would buy again.

5.0 out of 5 stars Best Calculator I've Ever Used

2026-02-21    -Jonathan Donihue

I'm a college student, studying for a degree in Economics. Needless to say, my life these days is all about maths. For the past couple of years I'd been using the TI 84 Plus CE which, although it's a pretty good graphing calculator all in all, has it's issues, but I is the recommended calculator for all the classes I've taken so far. So, imagine my surprise when I found out about the Nspire calculator series.The TI Nspire CXii CAS is an extraordinary tool. It can factor polynomials, calculate complex equations giving the answer in terms of i, and graph in 3D. That's right...Z-axis! The CAS in the calculator's name stands for Computer Algebra System. It allows you to solve polynomial equations in any number of variables and give answers in terms of those variables. That's right! You don't need numbers!One of my favorite upgrades is in the graphing feature. In the TI 83/84 series, if you wanted to trace a graph to a point of interest that was not in you current viewing window, you needed to leave the graph and go to a separate page where you needed to reset the viewing window to include your point of interest, then you had to navigate back to the graph and calculator would redraw it often very slowly. The Nspire CXii, on the other hand, allows you to make adjustments to the screen from a pop-up menu that comes up while you're still in graphing mode. And, if you don't want to bother with that, you can use the track pad to pick up the screen and move it, or you can just trace your chosen graph in either direction and when you reach the edge of the screen, it moves the screen to match your movements. You can also split the screen to view your table of values while looking at your graph!I'm still discovering all the things I can do with this calculator and I'm sure I'll continue to discover much more as I advance to higher levels of maths. There are entire apps dedicated to geometry, statistics, trigonometry, and more. Also, apparently there is a whole set of science tools witch can plug into the calculator to give you data on a wide range of things; heat, speed, velocity, etc. So much good stuff.Ok, now for areas that could use improvement. First, there is set of educational software that you can download and access for free when you purchase the calculator. Unfortunately, the software is only compatible with Windows or iOS. I, like many students, am a Chromebook user. Not making their systems compatible with Chrome OS is, in my opinion, an epic fail. I contacted their customer service department and suggested that improvement as well as a cloud computing option for those who want to access the tools from any computer. I was told that they passed my ideas on to their product development department.All in all, though, this is a great calculator! I'm sure I'll get several years of enjoyment out of it as I work toward my degree. It's way more intuitive and easier to navigate than the TI 84. That said, if you're like me, you'll need some help to get started. There's a pair of books by Lucas Allen in the Kindle store that really jump-started my understanding and enjoyment of the TI Nspire CXii CAS. I highly recommend reading them.

ótimo

2025-12-30    -Alexis

Excelente calculadora e entrega rápida pela Amazon mesmo fora de USA.

Excelente calculadora

2026-01-21    -Carmona Villa Humberto Alejandro

Excelente calculadora, yo soy estudiante de ingeniería y da los resultados que uno espera de este nivel sobretodo porque tiene una amplia gama de funciones útiles e intuitiva.

5.0 out of 5 stars Read this about the battery "issue" with this calculator

2026-03-02    -Eric

I bought this calculator and it was opened, but I decided to keep it after I was given an option for a discount sent to my account. All in all, it does exactly what I was expecting. Excellent display, much more rapid graphing than my TI-89 Titanium, multi-color, you name it. The touch pad does seem to be a bit too sensitive, but it's a graphing calculator, not the Mars Rover. Although there are other reviews out there that discredit the battery, there's more to the battery than what I've read. You must charge it for several hours first. I updated the firmware, and charged it for about 5 hours and it keeps the charge. Note: The charge icon won't go in increments of 1, it will jump to, say, 25%, then a while later it'll be at, say, 75%, then eventually 100%. So with MY unit here, it doesn't appear to be a battery issue, it's more of a sensitivity issue with the battery % indicator.

5.0 out of 5 stars Essential for College Math Courses

2026-01-06    -customer

Must have for High School and College Math classes! Time Saver! Less frustration with using this caluculator to solve problems. I think it is the Best Calculator on the market advanced math courses! Perfect gift for young student starting Algebra and next levels of required math in HS and College. Worth every dollar.

ممتازة يستخدمها ابني ولكن تحتاج الى تدريب للاستخدام

2026-01-14    -Mohamed alhammad

تحتاج الى تدريب للتمكن من استخدامها بكامل وظايفها

ótimo

2025-12-23    -Alexis

Excelente calculadora e entrega rápida pela Amazon mesmo fora de USA.

4.0 out of 5 stars Must be a good calculator? Don’t know yet.

2026-02-20    -Jimbo61

I go looking for a calculator to help do advanced calculations and the first thing you try and do is see if it works. Well, the screen has good color and quality for its size. Its accuracy and functionality are hard to evaluate when you read half the instruction manual and then realize that they didn’t explain how to calculate a simple math calculation? And you have to re-read it to find out how to use the “=“ key! I didn’t get to re-read it. Was called to duty and this was just to fill the boredom between duty and offduty. Value for money is closely linked to readability of the instruction manual. Not good right now.

5.0 out of 5 stars Incredibly useful

2026-01-31    -Blake

Absolute God-tier calculator. It excels in every discipline, statistics, calculus, algebra, chemistry - a must have. The only caveat I must mentioned is that not every professor will allow this on a calculator, due to the CAS functionality. The notes feature is useful in the lab. The only thing I don't like is the keyboard laid out as ABC.. rather than QWERTY, has absolutely no impact on its functionality. 10/10 would buy again.