In the first half of the class, we did the sketching activity. I have never been good at drawing. Since I was young, I knew that I was not very good at controlling a pen, and even though I have practiced handwriting for years, the improvement has been limited. Because of this, I stopped trying to draw a long time ago. However, when I was asked to draw something for this activity, I actually started to discover some techniques through trial and error. At first, I started with the most remarkable object, but then I found it difficult to arrange the objects behind it. I realized that it might be better to start from the background and then move forward. I also found that simply drawing the outline of a tree did not really make it look like a tree. So I slowed down and observed it more carefully, I noticed that what made the tree recognizable was mainly its trunk and larger branches. So I lightly drew the general shape first, then added the trunk and major branches, and finally the leaves. The result was much better than my first attempt.
At first, I did not really understand how this activity could help us become better mathematics teachers. After doing it, however, I think the point may be that if we want to become better at something, we first need to be willing to try, then observe carefully, learn from failure, and keep adjusting what we are doing. This also connects to our discussion of Grant and Zeichner's ideas about reflective teachers. Open-mindedness is obviously important because teachers cannot be too stubborn about their previous experience or existing practices. Responsibility was especially meaningful to me because I have experienced its importance directly in my own teaching.
I mainly teach Grade 11 and 12 mathematics and physics, and I often meet students who lack even basic knowledge of some fundamental concepts—not deep understanding, but simply knowing what those concepts mean. For example, some students cannot clearly explain what a function is or how a function expression is related to its graph. This makes Grade 11 and 12 mathematics very difficult for them. Sometimes I complain in my mind that their previous teachers did not fully prepare them, but then I also ask myself: when my students graduate and go to university, will their professors complain about me in the same way? Will I become the last part of an ineffective education system?
Because of this concern, I went to the UBC Math Department website and downloaded past exams in calculus, linear algebra, probability, and complex analysis, and worked through them myself. I wanted to have a better idea of what students may actually face in university. Since then, when I teach calculus, I pay more attention to ideas such as the Mean Value Theorem, the physical meaning and applications of definite integrals. When I teach systems of linear equations, I emphasize their geometric meaning instead of only teaching students how to get the answer. I think this may also be part of what Grant and Zeichner mean by wholeheartedness: not only caring about whether students can pass the course in front of them, but continually learning and adjusting our own teaching because we care about what happens to them afterwards.