Ohms law


The electricity lecture opened with explaining the concept of potential energy and current using a waterfall. 

The morning session moved to the presentation after one example was worked on the board.


The laboratory notes were compressed on to a half of the whiteboard 


Students missed the third clause. Perhaps these should be numbered explicitly. That there were three goals was missed by the class. This is also a generation that does not read. Students have never been good about reading directions, but this generation takes non-reading to a whole new level.


Ellinae, Austin, and Jenry-Thor work on an Ohm's law rig. This rig had been set up by the instructor. Both the single and double battery values were already recorded. This gave the group only two more measurements to make: each group had only four batteries (cells). This would be the proximate cause of the attendance collapse. With their data in hand, they departed the classroom without knowing that they need the color band information on their resistor. 


Elain holds the multimeter probes while Sapwkini adds a battery


Elain places a clip on the battery pack

Seniko records data, Iva Faye and Leila'Ona set up the breadboard circuit. I would not know that they were struggling to set up their circuit until later. 

Troubleshooting in this group took time. I sat at the table with my back to the class. Unbeknownst to me, the group behind me had packed up an left. The problem would turn out to be a dead ammeter in the multimeter. Students come and go to the washroom, so when I stood up from this group I did not realize that the group with a head start had actually left.

I then went to assist Leila'Ona. Maylanica, Seniko, and Iva Faye. There was something loose in their circuit and readings were inconsistent. Perhaps I was overly focused on the circuit, but when I looked up, the room was empty. Usually this laboratory is wrapped up with looking at the color codes and calculating the difference between the experimentally measured resistance and the manufacturer's specification. The students had cleaned up, put away their resistor, and left. There was no way to determine who had which resistor. This hasn't happened before. I would later learn that the other groups saw the first group leave and figured that the laboratory was only the measurements of voltage and current. Only this last group would obtain their resistor's specifications.

330 Ohm resistor.

Gratuitous baby flapping arms picture

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