The worksheet in which this page is included leads the students into an infinitesimal approach to the FTC via he 4,000 times zoom of CorelDraw as a visual mediator, totally avoiding the limit conception. Unfortunately the file.pdf does not allows zoom-in CDR.
This worksheet introduces the natural logarithm from the accumulated area under the function f(t)=1/t as related to the graphs of the running total and the daily deaths of COVID19 as displayed in the media. The supporting idea is to raise the students’ speeches to provide material for future quilting.
Years later… A paroxysm of Cauchy’s “on dit que”: how analysis should not be taught.