本文以“制作一个尽可能大的长方体盒子”为例,通过揭示课前教师“备学生”与课上学生真实学习之间的落差,提出:有效教学是超越教学技巧的,需要教师借助课堂观察,聚焦学生,基于事实,建构关于学生的知识。同时也提出:从关注教到关注学,需要在课堂评价中引入学习者的视角。 This paper takes “Making a box as large as possible” as an example. By revealing the gap between the pre-class teacher “prepare students ” and the real learning of the students in class, this paper proposes that effective teaching is beyond teaching skills and needs Teachers use classroom observation to focus on students and build knowledge about students based on facts. At the same time, it is also pointed out that from the attention to the attention to the study, the learner needs to be introduced into the classroom evaluation.