You Will Be Haunted

Last week I told my Precalculus class that they would be haunted, haunted by a common algebraic mistake.  A visual depiction can be found below.

I almost never purposely put an incorrect statement in the notes.  I know that whatever I write, right or wrong, goes into students’ brains and I have no control about  comes out.  I just hate to say, “Don’t do this.”  It just emphasizes the wrong instead of encouraging the right.  With that disclaimer, take a look.

A Common Algebraic Error


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 Classroom Happenings, Pedagogy, Teaching. Bookmark the permalink.

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