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I just don't get why making some unsupported postulate about how parabolas can be generated from straight lines is better pedagogically than teaching completing
by civilized 5y ago
I just don't get why making some unsupported postulate about how parabolas can be generated from straight lines is better pedagogically than teaching completing the square and providing a geometric interpretation for completing the square.
- jonsen 5y agoThat's ok. I can't explain it here in a few lines. It's rather a pedagogic principle that permeates most of my teaching. It's not just a postulate. It's demonstrated. A style used from the start of algebra.