学生学习活动单是有效教学的一把利剑。好的活动单设计应坚持明确的目标定位原则;给予学情的基础原则;基于结构的精当原则及基于课时的差异原则。教师既要注重活动单的设计,也应指导学生学会合理使用与保存,充分发挥活动单的功能,促使课堂教学效益最大化。 Student learning activities alone is a sword for effective teaching. Good activities should be designed to adhere to a clear goal of the principle of positioning; to give the basic principles of learning; based on the structure of the principle of eligibility and the principle of differences based on class time. Teachers should not only pay attention to the design of the activity list, but also guide the students to learn how to use and preserve them in a rational manner and give full play to the function of the activity list so as to maximize the effectiveness of classroom teaching.