Scaling the Teaching Curve: A PCMI Teacher Program Residential Workshop Sunday, July 28 Photos Math 1

Math 1 (Sunday evening)
In the initial problem, we counted regions determined by chords connecting points on a circle; the resulting sequence has a tempting pattern that is broken at the 6th number. Then we introduced the primary object of study for the week, "trains" consisting of Cuisenaire rod "cars." We determined a formula for the number of trains of a given length, developing the tools of adding and extending cars and the notions of cuts and joins.

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