What We Test For

Almost all exams in mathematics courses up through the calculus sequence are composed of a series of problems for students to work.  These questions are generally much less problems than exercises.  The idea is for our students to demonstrate that they have acquired a certain set of skills and knowledge and that they also understand the mathematical concepts.  But these two objectives have been conflated in mathematical instruction and students study for tests by essentially drilling on the problems they find on practice tests, review sets of problems and the homework.  In fact the preponderance of  homework problems are of the drill type.  Math texts have gotten thicker and thicker not because of additional subject matter (There is some of that.) but because students demand to see more problem solutions modeled.  The problems that once required students to use mathematical concepts in a new (to them) way have been turned into exercises.

It can be argued that doing such problems requires understanding of the underlying concepts – at least doing them easily and remembering how to do them.  When I explain a problem, I write down the steps and verbally (mostly) model the thinking process – what concepts I use.  But the students learn the steps.  Of course they do.  That is how they will be tested.

As I prepare for Precalculus II next term, I hope to separate the problems into skill problems and concept problems – drill and memory versus understanding.  The tests should really be made up of the second type of problem but this would cause a student uprising.

By the way, making up good unique problems that test for concepts is difficult and as soon as the problems are used on test they will make their way  into test files and thus will lose their purpose if reused on a test.  The existence of the internet just accelerates a good problem’s obsolescence .  They will circle the globe at the speed of light never again to have the impact their first use was designed for.  This is like the difference between watching a movie for the first time and then watching it over and over again.  No surprises and less intellectual challenge.


About jrh794

I am a sixty-five year old math instructor at Southern Oregon University. I taught at the College of the Siskiyous in Weed California for twenty-six years. Prior to that I worked as a computer programmer, carpenter and in various other jobs. I graduated from Rice University in 1967 and have a MS in Operations Research from Stanford. In the past I have hand-built a stone house and taken long solo bicycle tours. Now I ride my mountain bike and play golf for recreation.
This entry was posted in Curriculum, Pedagogy, Teaching. Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s