“认识公顷”是苏教版小学《数学》教材五年级上册的内容,既是学生对面积单位认识的一次拓展,也是学生空间观念上的一次飞跃。为了帮助学生较好地建构1公顷的表象,我们在课前做了充分的准备。一、以批判的眼光去审视准备一节课,我们常常会从对自己或他人以往教学经验的回顾与反思开始,以批判的眼光去审视总会有别样的收获。“认识公顷”的常见教学流程是:第一环节,出示一些图片,告诉学生计量较大的土地面积常用公顷作 “Understanding hectares ” is the content of the fifth grade of the textbook “Mathematics” of the Sujiao Version Primary School. It is not only an expansion of students ’understanding of the area units, but also a leap forward in the students’ space concept. In order to help students to better construct the appearance of 1 hectare, we made full preparations before the class. First, to critically examine and prepare for a class, we often start from their own or others past experience in teaching review and reflection began to look critically to have a different kind of harvest. The common teaching process for recognizing hectares is as follows: In the first session, produce some pictures telling students to measure the hectares of commonly used hectares of land