2022年17.1勾股定理教案3 .pdf

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1、备课人学科数学备课时间课时安排一课时课题171 勾股定理第一课时教学目标知识教育目标：1体验勾股定理的探索过程。2理解并会运用勾股定理解决实际问题。能力培养目标：1、通过用多种方法证明勾股定理，培养发散思维。2、把实际问题转化为数学模型，培养学生分析问题解决问题的能力。品德培养目标：加强爱国主义教育1、通过了解勾股定理的历史，激发学生热爱祖国，热爱祖国悠久文化的思想，激励学生发奋学习。2、让学生体验自己努力得到结论的成就感，体验数学充满了探索和创造，感受数学之美，探究之趣。教学重难点教学重点：勾股定理的理解和应用。教学难点：把线段的计算转化为直角三角形，用勾股定理解决实际问题。教学方法讲练结合

2、；讨论探究法。教学过程一、导入1如图，蜗牛爬行多长路？2小鸟最少飞了多远？3 飞机的速度是多少？飞机在空中水平飞行某一时刻刚好飞到一男孩头顶正上方4000米处,过了20秒,飞机距离这个男孩头顶 5000米,求飞机飞行了多少千米?4两船相距多少？甲轮船以海里时的速度从港口向东南方向航行，乙船同时以海里时速度向东北方向航行求它们离开港口小时后相距多远？文档编码:CC7O7N3U1X5 HM10D7X1E8V3 ZK1W8R6K1S2文档编码:CC7O7N3U1X5 HM10D7X1E8V3 ZK1W8R6K1S2文档编码:CC7O7N3U1X5 HM10D7X1E8V3 ZK1W8R6K1S2文档

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4、5 HM10D7X1E8V3 ZK1W8R6K1S2文档编码:CC7O7N3U1X5 HM10D7X1E8V3 ZK1W8R6K1S2文档编码:CC7O7N3U1X5 HM10D7X1E8V3 ZK1W8R6K1S2文档编码:CC7O7N3U1X5 HM10D7X1E8V3 ZK1W8R6K1S2文档编码:CC7O7N3U1X5 HM10D7X1E8V3 ZK1W8R6K1S2文档编码:CC7O7N3U1X5 HM10D7X1E8V3 ZK1W8R6K1S2文档编码:CC7O7N3U1X5 HM10D7X1E8V3 ZK1W8R6K1S2文档编码:CC7O7N3U1X5 HM10D7X1E8V

5、3 ZK1W8R6K1S2文档编码:CC7O7N3U1X5 HM10D7X1E8V3 ZK1W8R6K1S2文档编码:CC7O7N3U1X5 HM10D7X1E8V3 ZK1W8R6K1S2文档编码:CC7O7N3U1X5 HM10D7X1E8V3 ZK1W8R6K1S2文档编码:CC7O7N3U1X5 HM10D7X1E8V3 ZK1W8R6K1S2文档编码:CC7O7N3U1X5 HM10D7X1E8V3 ZK1W8R6K1S2文档编码:CC7O7N3U1X5 HM10D7X1E8V3 ZK1W8R6K1S2文档编码:CC7O7N3U1X5 HM10D7X1E8V3 ZK1W8R6K1S2

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27、2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:

28、CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G

29、10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R211、12、文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G

30、10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6

31、 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4

32、A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3

33、 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K

34、4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R

35、2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:

36、CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2三、课堂小结：四、作业：文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R

37、2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:

38、CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G

39、10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6

40、 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4

41、A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3

42、 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K

43、4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R

44、2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:

45、CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G

46、10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6

47、 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4

48、A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3

49、 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2附：板书设计171 勾股定理第一课时一、导入二新授：三、课堂小结：文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档

50、编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6D2G10P2R6 HH9P4A7I3X3 ZN10K4P8S3R2文档编码:CI6