Otherwise I wouldn’t have anything to write about! A slow day as far as math teaching goes. PARCC testing all morning, a shortened schedule due to a pep rally in the afternoon, and covering for a teacher who had pep rally stuff to do came together in the perfect storm of: the only class I saw outside of the standardized testing room I was in was a tenth grade honors English class. Made for a pretty uneventful day in regards to my own classroom action.
I probably should have been more on my toes about doing mathy things with battle of the classes at the pep rally, but I was more concerned with watching the festivities. Anyway, on my way home (shh, I took the screenshots in the car) I saw a headline with a number in it. THREE THOUSAND DOLLAR TIP!
When I got into the parking lot I was curious, “Is this a normal tip at a crazy expensive restaurant, or did the patron do something really nice?”
Then I saw 6800%. Holy crap. If my server is good, I may sport for 25%, maybe 30? Wow. Anyway, then the “related headlines” section came up and I saw this:
Did a DIFFERENT person leave a huge tip? Nope. Same person. So which reporter has the better pre-algebra percent skillz? Stefanie Tuder or Sammy Nickalis? It’s difficult to see through the “play” icon, but the bill was $43.50 and the tip was $3,000.
This is going to lead to one of my favorite discussions with my class…turns out that the tip was actually almost right in the middle. 6,896.55…% Here’s the discussion topic:
When is it OK to round our answers? How far is it appropriate to round?