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Contrast Between Visual and Mathematical Acuity

Student "edition" found at {csi dot journalspace dot com}.

Maybe I shouldn't have started this blog now, not with everything that's been going on.

I was talking about the first meeting of my class in Engineering Materials Science for the thirteenth week of the first term. I was able to fill the chalk board with several definitions and enumerated items before, in the far end of the board, I was finally able to write the first equation for the chapter, about the fracture occurrence along internal flaws of a material given the length and the radial curvature.

There was one minor incident with Deiv when he asked about a circle I drew on one side of the board. It involved a long explanation, so I asked him instead why he wasn't listening. He answered that he was copying. He actually reasoned out. Even his classmates reacted to that.

In the first meeting of my Introduction to Electricity and Magnetism lecture class for the week we had problem solving for the last two chapters on magnetic fields and wire currents. The important thing about the questions we discussed was some of the answers had to be obtained not by computation but by application of the right hand rule.

I knew that there was still some way to go when even on some illustrations that I thought were clear as to the direction of the current and the magnetic field, some of the students (given a fifty-fifty choice of the right answer) would still not be able to answer correctly.

In the meeting of the lab class afterwards, I had the first of the two practical exam occasions.

Ten minutes seemed not enough time, as just on the first parts of the exam, where the student had to read the color code of the resistor and verify it using the V. O. M. as well as the voltage, sometimes they'd take already half of the allotted time, leaving not much for the experiment itself as well as the series, parallel and loop and node rule solutions.

It was in the latter half of the proceedings (among the last three examinees) that the X was drawn, and weirdly enough it was the class scholar.

But he didn't pick resistors in series or magnetic field as the experiment to report, but ohm's law.

Session 1263's attention was divided. Class dismissed.


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