2022年人教版小学数学一年级上册8.2《8、7、6加几》word教案 .pdf

名师精编优秀教案“8、7、6 加几”教学设计河苑街小学范小枫【教学目标】1使学生在已有经验的基础上，自主探究得出计算8、7、6加几的各种方法；使学生进一步理解“凑十法”，并能正确熟练的口算 8、7、6加几。2培养学生初步的观察、比较、抽象及概括能力、动手操作能力和对知识的迁移类推能力。3培养学生合作学习和数学应用意识。【教学重点】进一步理解“凑十法”，自主探究得出计算8、7、6 加几的各种方法。【教学难点】把另一个加数分成几和几，才能和8、7、6“凑十”，同时体现算法多样化。【教具 准备】课件、小棒、游戏用品。【教学过程】一、天天口算：9+4=8+2+4=9+3=7+3+2=9+8=6+4+4=名师精编优秀教案9+6=8+2+5=9+5=7+3+3=（要求：先独立完成，再指名讲算法、对答案）二、探索交流，解决问题：1提出问题，列出算式出示教材第 91页例2主题图，引导学生观察：在本单元开始的时候，我们看到了一幅学生举办运动会的图，现在我们来重点看看跑道上的这些同学。谁能提出什么问题？同桌互讲题意：第一种：前面有 8个运动员，后面有 5个运动员，一共有多少个运动员？第二种：穿深色衣服的有 7个人，穿浅色衣服的有 6个学生，一共有多少学生？生独立列式，全班交流：8+5 7+6 2探究 8加几的算法1）同桌合作探究9加几的方法咱们己经学过了，那8+5该怎么算呢？把你的想法用学具摆摆，并和同桌说说，比比哪个小朋友最会动脑筋，想的方法最多。2）总结交流方法指名学生上台演示摆小棒，归纳用“凑十法”计算8+5的思维过程：看到8，想到需要凑 2，所以先把 5分成2和3,8+2=10,10+3=13。5）巩固练习提升：文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3名师精编优秀教案 8+4 8+3 8+7 8+6 6）小结方法思路：这些题都是几加几？（8加几）8加几，怎么算？（生小结：8加几，就先把这个数分成 2和几，把8和2凑成10，再加上余下的几，就是十几。）3.探讨7、6加几的算法刚才大家已经会计算 8加几的算式了，那 7加几、6加几，你会计算吗？1）独立探究 7加几的算法：出示7+5，自己尝试解决2）全班交流方法：先把5分成3和2,7+3=10,10+2=12 3）小结7加几的方法：7加几，就先把这个数分成 3和几，把 7和3凑成10，再加上余下的几，就是十几。4）完成 P91第1题，总结 6加几的算法(方法同上)。三、巩固应用、内化提高：P91第2题8、7、6加几我们已经探讨完了，现在请大家先独立完成“做一做”第二题，比较第一行算式和第二行算式，看看你能发现什么？再全班交流。P91第3题独立完成后全班交流各自发现的规律。文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3名师精编优秀教案四、回顾整理、反思提升：总结9、8、7、6加几的方法。五、口算测试：8+3=8+4=6+6=8+6=7+4=7+5=8+9=6+9=6+5=7+9=5+6=6+6=6+7=7+7=8+7=8+8=5+7=9+9=9+5=8+5=文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 ZT9Y2X6Q2L3文档编码:CD4M10C1X4L2 HY5X9T4M9K3 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