The tutor covers a topic he’s surprised to have missed: using the memory of the Casio fx-260solar. I always have a Casio fx-260solar around. It’s economical and reverse-entry, similar to the calculators I grew up with. However, I’ve never used …
Calculator usage: using the memory on the Casio fx-260solar Read more »
The tutor explains his recent understanding of a function he’s wondered about. I’ve noticed the ENG function on more than one calculator, but have never used it. I’ve always assumed it means “engineering”; since I’m not one, it makes sense …
Calculator usage: The ENG function on the Casio fx-260solar Read more »
The tutor shares how to find the derivative with the Sharp EL-520W. To my knowledge, the Sharp EL-520W won’t give the symbolic derivative. Rather (as you’d likely expect anyway), it evaluates a function’s derivative at the x value the user …
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The tutor mentions how to change trig units on the Staples BD-6120G. For grade 10 and 11 math students, degree mode is probably needed. You know if you’re in degree mode by a capital D at the top of the …
Calculator usage: degree, rad and grad mode on the Staples BD-6120G Read more »
The tutor covers a simple, yet powerful feature of the Texas Instruments TI-30xa. Using the memory can save time in multi-step calculations. With the TI-30xa, here’s how: Enter the number you want to store on the display. (It can also …
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The tutor brings up a small issue that can be tricky for new WriteView users. The WriteView I have is the Sharp EL-W535. Of course, a feature of the WriteView is that it shows fractions up-and-down, just like a person …
Calculator use: entering fractions with the Sharp WriteView Read more »
The tutor brings up what he finds a fascinating concept: internal rate of return. The way I understand it, the internal rate of return is the interest rate that would make possible an exact sequence of deposits and withdrawals, with …
Financial math: Hewlett-Packard 10B: internal rate of return Read more »
The tutor focuses on the Staples BD-6120G, which has some convenient features. Overlooking the Staples BD-6120G might be easy: I can’t recall any of my students using it. Yet, I picked one up from Staples’ abundant shelves; someone must use …
Calculator usage: linear regression on the Staples BD-6120G Read more »
The tutor shows another feature of the Sharp EL-520W: simulation calculation, aka repetitive calculations with a formula. Let’s imagine you’re a middle school math teacher who wants to do a lesson about Pythagorean triples: you want sets of values a, …
Formula use: Simulation calculation on the Sharp EL-520W Read more »
The tutor shows the easy definite integral function on the Sharp EL-520W. While indefinite integrals such as ∫(xsinx)dx remain out of reach from calculators I know, the definite integral ∫0Π(xsinx)dx is easy to find on the Sharp EL-520W. You want …
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