Session 2: What is an “average” pencil?


Presenter: Sharon Taylor, GSU

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Technology: Word document on the projector. Computer decided to update itself 10 minutes into the session.

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4-page packet (including cover page–she also is sending a blank copy home with us so we can write on the first one). Why not just give us a link to it? This could have been more of a problem for her if more people showed up. She also had a tablet to write on for recording the data, but wasn’t very adept at it, so the data did not go into the actual table.

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Hands-On: pencils of different lengths, scissors, thin & thick paper strips, scissors, rulers, tape.  Lots of verbal directions at the beginning (she seemed very nervous & stumbled over words, perhaps because there wasn’t a large turn-out and she lost some confidence?).

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What I liked: Cool extension ideas for exponents, standard deviation, using Legos for # of letters in your name and then “evening out” the stacks. Someone also mentioned making a “human box & whisker” plot, which I’ve done before, but she added in the idea of “stacking” people who have the same number of letters in the name to show that the length of the box (or whisker) will be shorter due to repeated values.

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Interesting: Some teachers weren’t very adept at measuring in inches/centimeters.  I noticed several people writing 5 3/16″ as 5.3″.