Thou Shalt Not Divide by 0

Every math student knows that division by 0 is forbidden. As a matter of fact, on the list of commandments in mathematics, this is at the... Read more »

Think Before Counting

Very often a problem situation seems so simple that we plunge right in without first thinking about a strategy to use. This impetuous beg... Read more »

The Worthless Increase

Suppose you had a job where you received a 10% raise. Because business was falling off, the boss was soon forced to give you a 10% cut in... Read more »

The Worst Case Scenario

Reasoning with extremes is a particularly useful strategy to solve some problems. It can also be seen as a “worst case scenario” strategy... Read more »

The Pigeonhole Principle

One of the famous (although often neglected in the instructional program) problem- solving techniques is to consider the pigeonhole princ... Read more »

The Most Misunderstood Average

Most uninformed students, when asked to calculate the average speed for a round trip with a “going” average speed of 30 miles per hour an... Read more »

The Hands of a Clock

The clock can be an interesting source of mathematical applications. These can be applications in mathematics and not in other disciplin... Read more »