Midwestern State University
3410 Taft Blvd.
Wichita Falls, TX 76308
Calculators differ in how they handle order of operation and in the number of pixels in the graphical display. When the instructor is aware of these differences, they can be used to provide instruction on concepts such as appropriate use of parentheses, aspect ratios, and vertical asymptotes. Specific examples will be given.
Scatterplots and regression analysis are now common in College Algebra textbooks.
Producing these on a calculator is a relatively complicated procedure compared to
the usual types of calculations students are expected to do. Teaching this to
students can be handled by using a general procedure given at a level that works
on any model accompanied by more specific details on a case by case basis.
Breaking the details up into pieces makes the regression analysis easier for
the students to grasp.