Month: September 2013

Simplifying radicals: variables with coefficients

Tutoring math, simplifying radicals constitutes one of the most difficult topics for high school students.  The math tutor offers a step-by-step approach which continues here. In my previous post, I mentioned how simplifying the square root of a variable to

Math: simplifying radicals, Part II

Tutoring math, you need to explain this every semester.  The math tutor draws the distinction between handling the numbers and the variables. Looking back to my earlier post on radicals, you’ll get the basic idea. Just for a quick review,

Math: measuring angles: degrees, minutes, and seconds

Tutoring math, you don’t see this very often these days.  The math tutor recalls learning it in Math 12. Let’s imagine you have 32.65 degrees.  In the “old days”, it might have been stated as 32 degrees, 39 minutes.  It

Math: practical calculator hints

Tutoring math, you notice the various calculators in use.  The math tutor reveals a couple of important differences among them. When I was in high school, I used a Texas Instruments scientific calculator.  What model it was I don’t know,

Math: the “fraction button”

Tutoring math, you’ll become aware of the fraction button.  As a math tutor, I don’t recommend using it.  Nonetheless, people commonly do…. Looking at a scientific calculator, you’ll likely see a button that looks like this: ab⁄c. It’s the fraction

English: two common sentence faults

Tutoring English, you deal with these issues constantly.  In this post, the English tutor sheds light on a couple of common sentence faults. You burnt the cake she is furious.      fused sentence You burnt the cake, she is

Math: prime and relatively prime

Tutoring math, these definitions don’t come up often enough. The math tutor offers this brief read on them. A factor of a number divides into it with no remainder.  For example, 5 is a factor of 15; 7 is a

English: Active vs Passive

With another school year upon us, we resume tutoring math, sciences, English, etc.  Tonight:  a post about English. Active voice and passive voice are both easy to understand.  Behold: Active:  Bob presented the speech. Passive:  The speech was presented by

Math: hexadecimal numbers

Tutoring math, this is an interesting concept.  Its common application is in computer science. You might have seen numbers like c6 or e9.  Depending on the context, these may be hexadecimal (aka hex) numbers.  The hexadecimal system is base 16.