Wednesday, November 14, 2012

Day 50: Symmetry in Practice

Very loosely structured day. Spent the first half just trying to firm up our ideas about symmetry from the intro day yesterday. Settled on a basic definition that symmetry results from any action that creates a result indistinguishable from the original image. I tried to word it like this to avoid pigeon holing us into thinking that symmetry only dealt with folds and lines, because rotations are just as important. 

After the recap, I had students work on Unit 3 Worksheet #4. Some students work, but many did not. Some would work through the first 4 problems, definitely the easiest problems they'll ever see. Then they'd quit, either thinking that the content is so easy that they don't need to bother doing any more, or being so completely stymied by the transfer of skills to connect with midpoint and angle bisectors that they lose all hope. 

I make a point of talking about each of these pitfalls and stressing the need to work through struggle and try to practice every style of problem to make sure that you understand all aspects of the content, but my pleas often fall on deaf ears. 

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