Month: March 2014

Math: counting: multiply or add

Tutoring math 12, you may discuss counting problems.  The tutor offers a quick guide for when to multiply vs when to add. One question you’re sometimes asked about counting is when you multiply, vs when you add.  The answer is

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Math: div and mod

Tutoring math, you know that div and mod are also fundamental to computer science.  The tutor presents them with an example. Consider the age-old long division situation: In this case, the question posed is “30 divided by 7”. The answer

Math: radicals: rationalizing the denominator

Tutoring math, you cover this topic with students in late middle school or early high school.  The math tutor shows the first case. This article assumes that the reader is familiar with multiplying radicals. If necessary, see my article here

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Math: multiplying radicals

Tutoring high school math, you realize that radicals are a problem for many. Today the math tutor gives brief coverage of multiplying radicals. Consider the following example: Simplify 3√(6)*4√(7) Multiplying with radicals goes “number times number, radical times radical.” Like

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Organic chemistry: a beginning

The tutor knew that eventually, he would discuss organic chemistry.  While it might be mentioned only briefly in high school, it is important at university. Organic chemistry is a bit different from the chemistry most students are first taught. Yet,

Math: Finding the slope of a line

Tutoring math, you know this skill is essential.  The math tutor provides a quick explanation and example. The concept of slope is known to all in everyday life.  In math, it is defined as follows: slope=rise/run=m=(y2-y1)/(x2-x1) Indeed, slope is often

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Biology: diffusion

When you tutor biology, molecular movement and transport are topics you need to explain.  Front and centre is diffusion. Diffusion is the tendency of particles to move from an area of high concentration to lower concentration.  It happens spontaneously, meaning

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Computer science: interpretation of the perl for loop

Tutoring math, you are likely aware of its connection to computer science.  The math tutor continues the explanation of the perl for loop. In my previous post, I began exploring the field of computer science with a look at a

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Computer Science: the for loop

Tutoring math – especially if you have a degree in it – you likely realize that some of your students are on their way to computer science courses.  The math tutor opens the discussion on programming with the concept of

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