Texas InstrumentsTI-36X Pro Engineering/Scientific Calculator | 9.7 Inch | Black.

I bought this calculator when my old machine shop calculator died from being dropped too many times. There are a few things to note about this calculator for this type of calculation. And since I'm a retired mathematics teacher, I know a thing or two about calculators in education.First, this seems like a great choice for use in a machine shop. I need a high quality and durable calculator with trigonometric functions. This calculator is all that and more. The multi-line display is also convenient for seeing a record of previous keystrokes. Its quite a bit lighter than the old graphing calculator I was using, and I'm hoping that will make it more durable--lighter objects hit the floor with less force than heavier ones.This calculator has enough capability for educational use IF you don't need (or are not allowed to use) graphing or computer algebra functions. It is not a graphing calculator. And it won't do computer algebra operations such as solving equations, computing derivatives, etc. It's probably not the best choice for linear algebra (matrices, vectors, ...) or for advanced statistics. But it does have all the numerical functions you would expect to find in a classic scientific calculator.Last note is that this calculator has a snap-on lid instead of the old slide-on style I'm accustomed to (like on the TI-84). It's too early to say whether I like it more or less. Its definitely faster: just clip it on or off. But will it hang-on or survive as well as the old slide-on style if you occasionally drop it on a concrete floor?

This calculator packs a punch, and I love it. I used to primarily use a TI-84 as a physics major, but I had to purchase this calculator (TI-36X) for an engineering course. I was surprised to discover how useful it is, so I now use this primarily for both lab and lecture courses.It is easily portable and does not require a charging cord, so I never have to worry about not having a charged calculator for an exam. There are several useful functions I use often--the definite integral function being one of them. This calculator can also solve simple systems of equations. These are great for double checking hand calculations during an exam or lab. The rational number function is also great, and it will provide answers as fractions that can be turned into decimals. I am also able to switch back and forth between scientific and engineering mode, which is also very convenient for expressing answers in SI units with prefixes.Although it may seem like a "downgrade" from my TI-84, I really do not see it that way. I like having a simple calculator for exams and daily use. Compared to my TI-84, I am able to crunch numbers more quickly, in my opinion. Of course, I still use both calculators, but this one is my favorite of the two for these reasons.The only problem I have really ever experienced with this calculator is that there is a limit to the number of "entries" that you can type at once. I ran into this problem while computing several exponentials at once, but things can always be broken down into separate calculations.

Nice quality, new and unused. This calculator provides all of the functions my high school needs for his advanced algebra class. My 8th grader also needs one this year, which is good news because she should be able to use it when she is in high school, as well. The display size is not as big as a full graphing calculator, but it is still a decent size. My son wears glasses and hasn’t complained about not being able to see the screen. Great value.

I bought this calculator for the FE exam. Until then I used a TI-83 graphing calculator, and since then I have only used this TI-36x. That's how great it is.The muti-line display is great. You can also scroll through previous calculations, even after pressing clear. It's great for multi-step calculations.The operations on this calculator are really intuitive. If you're calculating integrals, it gives you an integral symbol to plug your limits and equation into. Same with square roots, fractions, exponents, everything. It will also do things like statistics models, where it asks for the inputs one at a time. It solves matrices, converts units, takes cross products, solves systems of equations, has useful constants pre-loaded, does combinations and permutations... I just wish I had bought this calculator sooner. It just takes a few minutes of playing around to find all these features.I just have two minor complaints:1) the fraction/decimal toggle button is right beneath the addition button, where I'm used to the "enter" button being. When I was first using the calculator I would often push that button by mistake at the end of the calculation. It doesn't actually DO anything in that case, so I would just have to delete the symbol and press enter. Now that I'm used to the calculator, I hardly ever make this mistake.2) If the input or series of calculations is longer than the width of the screen, the calculator will just continue pushing the line to the right, rather than continuing on the next line. It just makes it so that I can't see my whole input on the screen and I have to scroll back through to review.GREAT calculator for science or engineering majors. If you're buying it for the FE or PE, make sure you give yourself a few weeks to play around with it and get used to all the features and where to find them. Skim the user's manual too, so you're aware of all the awesome things this beauty can do.