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【背景】我校是九年一贯制,我长期在七、八、九年级教学。今年因为工作需要,我任教六年级数学,一开始,真的有很多不适应,学生心理特点、教学方法都大不相同。比如六年级数学上有这样一道用方程解决实际问题的题目:北京颐和园占地290公顷,其中水面面积大约是陆地面积的3倍,颐和园的陆地和水面大约各多少公顷?解决这题的方法就很不一样。【案例描述】教学案例一:教学时首先引导学生寻找题目中有哪些未知量和等量关系。我教学时,学生也找出两个等量关系:(1).水面面积+陆地面积=颐和园的占地面积(2).陆地面积×3=水面面积。“在知道了这两个等量关系后,同学们请思考
【Background】 Our school is a nine-year system, I am a long-term in seven, eight, nine grade teaching. This year because of work needs, I teach mathematics in sixth grade, the beginning, there are really many adaptations, the psychological characteristics of students, teaching methods are very different. For example, in the sixth grade, there is such a problem of solving practical problems in terms of equations: The Summer Palace in Beijing covers an area of 290 hectares, of which the surface area is about three times the land area. How many hectares are the land and water surface of the Summer Palace? Very different. Case Description】 【Teaching Case 1: First, guide students to find the topic of what the unknowns and the relationship between the same amount. When I was teaching, students also found two equal relations: (1). Surface Area + Land Area = Summer Palace Area (2). Land Area × 3 = Surface Area. ”After you know the two equal relationship, students think