The Day I Lost Control of my Class and Quit Teaching

Today I lost control of my class and quit teaching. Well, I lost control of two of my classes. I teach 4 classes on 70 minute blocks. That part is boring and who cares? Today I had three students in my geometry class teach a lesson on the effects of altering dimension on the area of an object. So they talked about the effect of altering the height of a trapezoid, or altering the base and the height of a parallelogram. They did not go into solids. They did have a set of google slides ready that they showed, the class took notes on, and that they provided additional notes and examples on the whiteboard on the side. All three of them were teaching like crazy and they were prepared. In that same class last week, a group of students taught a lesson on finding the area of regular polygons showing simple examples as well as cases where students needed to find the apothem. They dissected the polygons into congruent triangles formed by the central angle, showed how to find the central angle, then showed how to use right triangle trigonometry to find the apothem and hence the area of a triangle and thus the whole figure. It was amazing. Each of these groups taught the entire class. They gave a warm-up, worked various examples, and gave an assignment. I sat in the back and took notes. Continue reading