I've long worried about this, and it is starting to happen: Some students aren't sure which way is "clockwise" anymore. (The screenshot below is from a student's answer on a test I just gave, in which the word "counterclockwise" was used.) #DeathOfAnalog
Just to clarify, since some people in the thread below found my tweet confusing: The image shown in the tweet is not the answer to a test question; it’s a mnemonic diagram that a student drew to help himself or herself remember which way is counterclockwise.
The mnemonic is drawn correctly (obviously!) and I have no objection to that. Nor do I have any objection to students using mnemonics; they can be helpful, especially during the stress of a test. What I found amazing was that the student felt the need to draw such a mnemonic.
Moreover, quite a few students got the orientation backward (though not the one who drew the mnemonic). In 30 years of teaching, I’ve never seen so many students confused about the difference between clockwise and counterclockwise. It feels like something new is happening.
Incidentally, the test question was about the following chase problem concerning four bugs, each of which chases its counterclockwise neighbor. (Part (b), not shown, asked students to write the aiming condition as a differential equation for dy/dx in terms of x and y.)
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