Thursday, 12 December 2013
The kids you see above are working an assignment to simplify circuits. You know, the basic “here’s a mess of resistors in series & parallel, solve for the equivalent resistance.” Here’s the toughest one on the assignment:
Listening in on the conversation, I heard the kids working out a vocabulary to describe their thought process. One exchange:
Stu 1: The V for 1, 2, and 3 are all the same.
Stu 2: Why?
Stu 1: Because 1, 2, and 3 are parallel.
While not always technically accurate, the students were communicating unambiguously. Another exchange:
Stu 3: The A for 4 is the same as 5-6 and the same as total A.
Stu 4: Meaning the A for 4 is 12A and the A for 5 is 4A.
Stu 5: Why?
Stu 3: Because 5 & 6 are in parallel and the current needs to add to 12.
In this mode, most kids called current by its unit abbreviation, A. I opted to not interrupt the flow and good communication to correct them. Would you do the same if you heard kids applying vocabulary mildly incorrectly?
Got this assignment from a coworker and I love it. Students practice solving circuits of parallel and series resistors in a sudoku-like format. Here, go ahead and get the Word version of Circuit Sudoku.