作为在小学数学“量与计量单位”的认识教学里公认的、较难实施课堂教学的一个内容,对“认识公顷”一课确定的核心目标通常是建立“1公顷”的表象。因此,在笔者第一次教学设计中,很自然地想到可以给学生一个直观的表象——也就是用测绳在校内围出1公顷。这种做法,看似能破解这个内容在教学实施中的所有难题,但是站在学生数学学习的角度深入思考:这样的直接给予,就可以认为已 Recognized as one of the most difficult subjects in classroom teaching in elementary mathematics teaching of “quantity and quantity units,” one of the core goals of the “recognizing hectares” class is usually to establish “1 hectare” The appearance. Therefore, in the author’s first instructional design, it is natural to think that we can give the student an intuitive appearance - that is, 1 hectare is enclosed within the school with test ropes. This approach seems to be able to crack this content in the implementation of all the problems in teaching, but standing in the perspective of students learn mathematics in-depth thinking: such a direct grant, you can think that