I started writing about why this Facebook graphic made me a little nuts, but after three paragraphs, it all started to sound like, “GET OFF MY LAWN, YOU NO GOOD KIDS!” So I hit “delete.”
But contemplating the way arithmetic is taught today made me recall how it was taught when I was a kid. To me, the “new math” shown on the right side of the graphic is one small step beyond finger counting, slightly faster to compute than 53+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1=90.
In my school, we were drilled and tested constantly until we had memorized the various computations of numbers from one to one hundred and recognized them instantly. We knew that 26 plus 17 equals 43 because we knew that 26 plus 16 equals 42. It became part of our software, like the operating system embedded in a computer chip that tells the machine what to do when it is turned on. And it was tedious as hell.
Although I was fond of my maternal grandmother, I always dreaded visits with her and her second husband. He was a physicist by trade and believed that small children would only fritter away the day if left to their own devices. They needed to be put to work. For me, that meant memorizing the multiplication tables, and one through ten was just the beginning. If I could not effortlessly spit out the answer to “What’s 15 times 11?”, I was sent away until I had mastered the 15s. He was kind of a prick.
But as a result, I can still multiply any two-digit number by another in my head pretty easily, for whatever that’s worth to someone who made a career out of writing. One somewhat useful outcome of all this is that I can translate Celsius to Fahrenheit in my head instantly. Well, almost instantly. Take the Celsius temperature as a percentage of 180 and add 32. (25C: 25% of 180 = 45. 45 +32 =77F)
If the big thinkers in numeracy education think 53+2+5+10+10+10 = 90 is easier to master than learning that 53 + 37 = 90, who am I to argue? As my son, who has a Ph.D. in applied mathematics, said to me last night about the graphic above, “It appears to be missing a lot of context, but I can guess that it is trying to teach ‘number sense’ by splitting 37 into its constituent parts and adding up the small parts to reach 90. At any rate, I can’t say I’m too worried that these methods are a legitimate threat to the education of kids today!”
Damn. I’ll have to find something else to be pissed off about. Maybe people who don’t know that a preposition is the wrong word to end a sentence with.
Categories: Random PR Thoughts