The utilization of time includes irrelevant time and ineffective time. Irrelevant time refers to the time spent on activities that have no direct relation to teaching, such as talking about things unrelated to the lesson or dealing with matters that are not connected to teaching during class. Ineffective time refers to periods when teaching activities appear to be taking place but do not yield any teaching effects, such as copying questions onto the blackboard during class (instead of using multimedia for auxiliary teaching); or setting teaching objectives too high or too low, making it impossible for students to grasp the material or rendering the process unproductive; and also designing an unreasonable teaching process, leading to...