All these crossed lines, repeated measurements, and corrected notes! This is a true learning here. No "ready-made" answers, all of what students learn, they discover themselves. I prefer the workbook in which I see the process of discovery rather than a nice note copied from somewhere. Nowadays, you can easily find an answer to any question, just by opening your favorite browser... That, however, is not learning. That is copying answers from the Internet. Sometimes I am under the impression that copying without understanding.
I propose something different: a hard-copy workbook in which you must write yourself, correct, re-do... Yes, I like the workbook which shows the process, not the final product.
