In early April, I learned I would be teaching Calc I in the fall. I have not taught calc since 2005 and my material for the course is old, or lacking, or in need of revision.
The derivative by limit of the difference quotion picture at the left immediately came to mind. The notation is not what is "currently used" because of the x rather than h and the fact that the image doesn't move.
For years in precalc, I've been using Sketch Pad sketches that I've written. They're basic but VERY useful. They run on the web (see angle on the web) but not on my post-crash home computer (see angle on computer).
I needed new computers and new Sketch Pads to do the writing I planned. With these things, I could go from this static representation of the working web page to the new standard position angle.
|6/15/2021 Status Report
© Summer 2019, Summer 2021, A. Azzolino