Netflix: A Mathematical Force Majeure?

Getting a slow start to the new year here, but thought I would begin with commenting on the graph above. It's a slide from a website which I'll leave unnamed, but which I suspect news junkies out there could easily figure out. If you take a look at the graph, its intent is clear: the … Continue reading Netflix: A Mathematical Force Majeure?

A Short Python Script About The Distance Between Two Points

For this blog entry I wanted to do something different. During the past few weeks I've been working on a program that allows you to enter two points on an XY plane and find the distance between them. The formula to do this is pretty straightforward and can be calculated as follows: So here is … Continue reading A Short Python Script About The Distance Between Two Points

Determining whether a number is prime (or “The Benefits of Square-Rooting a Number, Part I”)

Something that comes up now and again in various contexts during lessons is how to tell whether a number is prime. My usual advice has been to use divisibility rules*, and if none work, then it's likely that the tested number is prime. Likely is not the same thing as certain, however, and, as the … Continue reading Determining whether a number is prime (or “The Benefits of Square-Rooting a Number, Part I”)

Solving tracing problems using graph theory

A couple of weeks ago, I was looking at a standardized test and came across the following β€œtracing” problem: Which of the drawings below can you completely trace without lifting your pencil or retracing a previously traced part?Β  When I was a teenager, I had seen similar questions to this one, but was always frustrated … Continue reading Solving tracing problems using graph theory

Donkeys, Logs, Snakes, Oh My!

For the last several years in the United States and the UK, there has been a strong push to teach primary and secondary-school students how to code. Whether this is a good idea or not, I personally have enjoyed learning about programming. One of my current hopes is to do more programming using the Python … Continue reading Donkeys, Logs, Snakes, Oh My!

Two (perhaps) quick(ish) ways to multiply two digit numbers in your head

πŸƒπŸ»βŒπŸ’‘ While tutoring students who are in the process of multiplying two numbers, I sometimes challenge myself by trying to do the multiplication in my head instead of using a calculator. I don't know where I learned it, but I usually take a divide-and-conquer approach to multiplying large numbers, a large number for me being … Continue reading Two (perhaps) quick(ish) ways to multiply two digit numbers in your head

Ebook Mystery Word Problem!

πŸ’»πŸ€”πŸ“• I have recently been reading an ebook* that is quite long and has endnotes. Because my ebook reader only tells me my current positions in the actual body of the book and the endnotes, I have been wondering how much of the book I have actually read. Right now, my reader tells me I'm … Continue reading Ebook Mystery Word Problem!