HP_Prime_w_Wireless_Module_250px

Graphing Calculators

I was asked to pass the following information along to you. I decided to do so because you may want to know about one of the newest CAS calculator models and because their follow-up offer for attending the summer institute is so generous. If your school and students need help getting calculators and/or you want…

Yitang Zhang
Photo by Peter Bohler from The New Yorker, February 2, 2015

February

   Calculus Teacher Makes the Big Times Before turning to this months posts, I though you might be interested this. There is an interesting profile of Yitang Zhang in this week’s The New Yorker magazine by Alex Wilkinson. Mr. Zhang is a mathematician whose interest is “bound gaps” a problem in number theory on prime numbers.…

The function is shown in blue, the derivative and maximum in red, and the second derivative and the point of inflection in green.

Good Question

When I started this blog several years ago I was hoping my readers would ask questions that we could discuss or submit ideas for additional topics to write about. This has not really happened, but I’m still very open to the idea. (That was a HINT.) Since that first year when I had the entire…

Half-full 1

Half-full and Half-empty

A thought experiment: Suppose you had a container with a rectangular base whose length runs from x = a to x = b, with a width of one-inch. The container has four vertical rectangular sides. You put a piece of, say, plastic into the container which fits snugly along the bottom and four sides. The…