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1、1 数学人教版四年级下册基于“课程标准”细化的教学目标、重难点第一单元四则运算单元教学目标1.结合具体情境，理解加、减、乘、除四则运算的意义，掌握四则运算中各部分间的关系，对四则运算知识进行较系统的概括和总结。2.认识中括号，掌握四则混合运算的顺序，能进行简单的四则混合运算。3.学生经历解决实际问题的过程，学会用四则混合运算知识解决一些实际问题，掌握解决问题的一些策略。4.通过数学学习，提高抽象概括能力，养成认真审题、独立思考等良好的学习习惯。单元教学重点：四则运算的意义、四则混合运算的顺序。单元教学难点：减法、除法的意义比较难于理解。课时安排：建议用 5 课时教学。第一课时：课题：加减法的意
2、义和各部分之间的关系教学内容：教科书 2、3 页内容教学目标：1.在已学过的加减法知识的基础上，概括出加减法的意义，掌握精品资料-欢迎下载-欢迎下载 名师归纳-第 1 页，共 36 页 -2 加减法各部分之间的关系，并对加减法的认识从感性到理性。2.通过知识的迁移理解，掌握新知识，逐步培养学生的逻辑推理能力及运用知识解决实际问题的能力。3.深刻理解加减法之间的关系，感悟到数学知识内在联系。教学重点：理解加减法的意义，掌握加减法各部分之间的关系并能灵活应用。教学难点：理解加减法的意义及各部分之间的关系。第二课时：课题：乘除法的意义和各部分间的关系教学内容：教科书 5 页及 6 页例 3 相关内容
3、。教学目标：1.理解乘除法的意义，掌握乘除法各部分之间的关系。2.结合解决问题的过程培养学生发现问题，提出问题和解决问题的意识和能力，体会乘除法和生活的密切联系。3.培养合作意识，团队精神，在解决问题中享受成功的喜悦，培养独立思考的学习习惯。教学重点：理解乘除法的意义并掌握乘除法各部分之间的关系。教学难点：理解乘除法的意义，掌握乘除法各部分之间的关系。第三课时：课题：和 0 有关的四则运算教学内容：教科书 6 页例 3 及相关内容教学目标：精品资料-欢迎下载-欢迎下载 名师归纳-第 2 页，共 36 页 -文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码
4、:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5
5、H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码
6、:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5
7、H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码
8、:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5
9、H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码
10、:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U33 1.会计算和 0 有关的运算，并理解和0 有关的运算的意义。2.通过学习活动提高学生的抽象概括能力，把四则运算的相关知识系统化，形成良好的认知结构。3.养成认真审题、独立思考等良好的学习习惯。教学重点：和 0 有关的运算的意义和计算方法。教学难点：0 为什么不能做除数。第四课时：课题：括号教学内容：教科书 9 页内容教学目标：1.掌握含有小括号和中括号混合运算的运算顺序，对四则运算的知识进行较系统的概括和总结。2.经历与他人交流各自算法的过
11、程，体会小括号和中括号的不同作用，培养与他人合作的能力。教学重点：理解含有括号的四则运算的顺序并能正确计算。教学难点：掌握四则运算的顺序。第五课时：课题：解决问题教学内容：教科书 P10页内容教学目标：1.利用四则混合运算解决实际问题 2.能在具体的问题情境中提出问题并能解决问题，养成认真审精品资料-欢迎下载-欢迎下载 名师归纳-第 3 页，共 36 页 -文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3
12、文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2
13、X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3
14、文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2
15、X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3
16、文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2
17、X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3
18、4 题，独立思考的习惯。3.经历探索和交流解决实际问题的过程，感受解决问题的一些策略和方法，培养优化意识。教学重点：正确解决实际问题教学难点：在解决实际问题中培养优化意识。第二单元观察物体单元教学目标：1.学生能辨认从不同位置观察到的几何组合体的形状。2.认识到从同一位置观察不同的物体，看到的形状可能相同也可能不同。3.通过观察、操作、想象、判断等活动，培养学生的空间想象能力和推理能力。单元教学重点：1.从不同位置观察同一物体的不同视图，发展学生的空间观念。2.认识到同一位置观察不同的物体，看到的形状可能相同也可能不同。单元教学难点：培养学生观察能力发展学生的空间观念。课时安排：建议用 2 课
19、时教学。第一课时：课题：不同位置观察同一物体教学内容：教科书 P13页内容精品资料-欢迎下载-欢迎下载 名师归纳-第 4 页，共 36 页 -文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9
20、ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L
21、2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9
22、ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L
23、2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9
24、ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L
25、2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U35 教学目标：1.知道物体的前面、左面和上面，能辨认从前面、左面、上面观察到的简单物体的形状。通过观察活动，认识到站不同的位置观察同一物体看到的形状可能是不同的。2.培养学生的观察能力和动手操作能力，初步建立空间观念。
26、3.在探究图形变化中感受乐趣，学会欣赏数学知识。教学重点：能正确辨认从前面、左面、上面观察到的简单物体的形状。教学难点：体会从不同位置观察同一物体所看到的形状可能不同。第二课时：课题：观察不同物体教学内容：教科书 P14页内容教学目标：1.通过实际的观察比较，初步体会从同一位置观察不同物体所看到的形状可能相同，可能不同。学会从相同位置可以看到相同形状的不同摆法。2.通过认真组织拼摆，观察交流，引导学生主动参与学习，以提升学生对实物及视图进行转化的能力。3.在观察比较中发展学生的空间观念，培养学习数学的积极情感。教学重点：体验到在相同的位置观察不同的物体，看到的物体形精品资料-欢迎下载-欢迎下载
27、 名师归纳-第 5 页，共 36 页 -文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3
28、文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2
29、X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3
30、文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2
31、X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3
32、文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2
33、X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U36 状可能相同也可能不同。教学难点：在相同位置正确观察不同的物体。第三单元运算定律单元教学目标：1.通过探索理解加法交换律、结合律，乘法交换律、结合律和分配律，并能运用运算定律进行一些简便计算。2.能够结合具体情况，灵活选择合理的算法，培养学生用所学知识解决简单的实际问题的能力。单元教学重点：理解加法交换律、结合律，乘
34、法交换律、结合律和分配律，能运用运算定律进行一些简便运算。单元教学难点：理解加法和乘法的运算定律，灵活选择合理的算法，会应用其进行一些简便运算。课时安排：建议用 7 课时教学。第一课时：课题：加法的交换律和结合律教学内容：教科书 P17例 1、P18例 2 教学目标：1.在解决具体的问题中理解并掌握加法交换律、结合律，能用字母表示加法交换律和加法结合律。2.引导学生发现知识的内在规律性，激发学生的学习兴趣。3.感受数学与现实生活的联系，能用所学知识解决简单的实际问精品资料-欢迎下载-欢迎下载 名师归纳-第 6 页，共 36 页 -文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6
35、L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1
36、X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6
37、L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1
38、X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6
39、L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1
40、X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6
41、L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U37 题。教学重点：理解并掌握加法交换律、加法结合律。教学难点：对加法交换律、加法结合律的熟练应用。第二课时：课题：加法运算定律的运用教学内容：教科书 P20例 3 教学目标：1.能运用加法运算定律进行一些简便运算。2.培养学生根据具体情况，选择算法的意识与能力，发展思维的灵活性。3.感受数学与现实生活的联系，能用所学知识解决简单的实际问题。教学重点：熟练运用加法运算定律，正确进行简便计算。教学难点：灵活运用加法运算定律进
42、行简便计算。第三课时：课题：减法的性质教学内容：教科书 P21例 4 教学目标：1.学生在解决实际问题中理解连减的简便计算，能熟练运用运算定律进行一些简便运算，体验算法多样化。2.培养学生根据具体情况，合理选择算法的意识与能力，培养思维的灵活性。精品资料-欢迎下载-欢迎下载 名师归纳-第 7 页，共 36 页 -文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A
43、5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编
44、码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A
45、5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编
46、码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A
47、5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编
48、码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U38 3.感受数学与现实生活的联系，能用所学知识
49、解决简单的实际问题。教学重点：理解并掌握连减的简便计算。教学难点：会根据数的特点灵活选择算法进行简便计算。第四课时：课题：乘法交换律和结合律教学内容：教科书 P24、25 页内容。教学目标：1.理解乘法交换律和乘法结合律并能进行简便计算。2.培养学生的分析比较综合的能力以及初步的抽象概括能力。3.培养学生的探究意识和问题解决能力，通过学生的自主学生激发学生学习的兴趣。教学重点：理解乘法交换律和乘法结合律，能进行正确的简便计算。教学难点：乘法交换律和乘法结合律的灵活运用。第五课时：课题：乘法分配律教学内容：教科书第 26 页例 7 内容教学目标：1.理解乘法分配律，并能简便计算。2.在探索规律的
50、过程中，发展学生比较分析抽象和概括能力，增强用符号表达数学规律的意识。精品资料-欢迎下载-欢迎下载 名师归纳-第 8 页，共 36 页 -文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW6L6V6F9U3文档编码:CM5L2P1X2G4 HN2X8A5H2J9 ZW