Category Archives: Math Explorations

I work out a problem or propose a new solution method.

Graphing Sampling Error for Ordinal Data

In previous posts I have been discussing how to treat rubric data as sample data.  The next post along these lines is intended to show how to apply various Bayesian methods to such data.  My plan was to contrast these methods … Continue reading

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Rubrics as Data – Part II

I am continuing to study, “What happens when we amalgamate rubric data?”  Part I is here.  This part will consider how to treat rubric data as a sample from a larger population. The same assumptions as in Part I apply: “Questions … Continue reading

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Rubrics as Data – Part I

Rubrics, the detailed categorization of student work, have become a common teaching and grading tool.  Here is one designed to assess college-level writing.  The idea is to provide specificity and a sense of progress.  The student and the teacher have … Continue reading

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Chasing Infinity – 3D Version

The frequency of my blog posts have been diminishing more and more, or should I say, the wave length has been getting longer.  I attribute this mostly to my accession as math department chair.  I just haven’t had the time … Continue reading

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Outcome Switching – What Golfers Know

Last Friday a rare event occurred at our golf course.  My foursome all sank long putts for birdies on the second hole.  What a great feeling and I could go on and on in detail but I won’t.  Anyway we get back … Continue reading

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Thinking with Units

I sign up at the golf course as a single and am paired with a couple of strangers.  On the second tee the inevitable question arises, “What do you do?”  I return, “I teach math at the university,” expecting to hear, … Continue reading

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Infinity

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