Oracle Tutoring, Campbell River, BC
(250) 203-6544 (text) or (250) 830-0295 (talk)
Tutoring math, you see a lot of scientific calculators. The tutor mentions some general advice about using calculator memory. As a kid in high school, I used a reverse entry scientific calculator. It had memory (which was very useful) but …
Tutoring high school math, calculators are always interesting. The tutor mentions a new favourite: the Staples BD-6108 Scientific Calculator. Toggling between float (aka ‘normal’) display vs scientific notation, the Staples BD-6108 Scientific Calculator delivers. Let’s imagine you want to convert …
Tutoring high school math, scientific calculators are a permanent fascination. The tutor mentions a quirk many might share. Due to and the fact that a common exponent notation is xa=x^a, it follows that (-8)^(2/3)=4. Curiously, of all the calculators in …
Calculator usage: negative numbers to rational exponents (with odd roots) Read more »
Tutoring math, scientific calculators are always interesting. The tutor mentions changing between DEG and RAD mode on the Media SC-1000. The Media SC-1000 is an appealing scientific calculator. I’ve been using it often during my sessions lately, having bought one …
Calculator usage: changing angle mode on the Media SC-1000 Read more »
Tutoring math, calculators can always be interesting. The tutor shares a capability of the Nexus 4 on-board calculator. If the Nexus 4 on-board calculator has broad complex number capabilities, I don’t know about them. I tried √(-4) and got Not …
Calculator Usage: Euler’s identity with the Nexus 4’s on-board scientific Read more »
Tutoring math, you notice the peculiarities of scientific calculators. The tutor brings up one about the Casio fx-991ES PLUS C. If you enter the operation 14÷9 into the Casio fx-991ES PLUS C, you’ll just as likely see 14/9 on the …
Math: How to convert between fraction and decimal on the Casio fx-991ES PLUS C Read more »
Tutoring math, you come to appreciate calculators. The tutor points out an interesting feature on the Casio fx-991ES PLUS C. Typically, the log key on a calculator means “base 10 log”, aka “common log.” What about base 7 log, for …
Calculator usage, math: logs in variable bases with the Casio fx-991ES PLUS C Read more »
Tutoring math, calculator features are always topical. The tutor mentions the ENG function on the Casio fx-991ES PLUS C. Back in my Halloween, 2015 post, I explain the general idea of the ENG function – that engineers and technicians often …
Calculator usage: the ENG feature on the Casio fx-991ES PLUS C Read more »
Tutoring financial math, you might often use the HP-10B. The tutor shows how easily it can apply a discount then add tax to get the final price. Example: Imagine a handbag is regular price $85 but is discounted by 20%. …
Calculator usage: finding final price after discount and tax with the HP-10B Read more »
Tutoring financial math, you might fall in love with a calculator. The tutor tells about markup on the HP-10B. Example: Imagine you buy a product for $35, then want to apply a 25% markup. Find the tag price using the …