2022年人教版二年级数学上册乘法口诀表教学设计 .pdf

名师精编优秀教案乘法口诀的教学设计马鞍镇中心小学：尉小平一、设计思想数学课程标准下的实验教材，强调数学学习应培养学生的自主探究、合作交流的学习习惯。实行多层次的练习，培养扎实的基础。在此基础上，学会表达自己的独立见解，并积极倾听和采纳别人的正确见解，从而养成学生从小热爱数学、喜欢数学的感情。二、教材分析本课时在教科书的第88-99 页分为两块内容：一是乘法口诀表的归纳整理；一是练习二十的教学。乘法口诀表是对两个单元的表内乘法内容所做的归纳整理，他为学生系统掌握这部分知识提供了有力的帮助。本教科书出现乘法口诀表是小九九（四十五句），使用大九九的地区可以出大九九表。练习二十的三道题目是针对学生在掌握了乘法口诀表的基础上进一步巩固练习，有利于学生在理解的基础上进一步的消化乘法口诀。三、学情分析教学本课时之前，学生已系统学习了表内乘法，并且已进行了关于乘法口诀的各种形式的练习，也已整理了16 的乘法口诀表。因此本课时对学生而言并没有多大的难度，关键在于对其学过的知识进行一个系统的数量，便于记忆和理解。四、教学目标1、知识与技能：让学生在前段时间学习的基础上，系统熟练地掌握表内乘法，了解其中的规律，并且能运用规律解决相关的问题。2、数学思考：能独立自主地分析整理乘法口诀表，学会主动探究，积名师精编优秀教案极交流，在同学中表达自己的想法。3、解决问题：能灵活运用自己已学到的知识积极解决相关的数学问题。4、情感与态度：培养主动探究、合作交流的良好习惯，善于表达自己的意见和想法，养成良好的数学实践的习惯。五、重点难点关键教学重点：是利用乘法口诀表进行表内乘法的计算。教学难点：是提高计算速度，能见算式立即说出得数。教学关键：是强化乘法口诀的记忆。六、教学策略与手段本课时关键在于引导学生对学过的乘法口诀进行系统的分析与整理，因此教学时可以放手让学生自己探究、交流，如：采用小组合作探究、同桌合作交流等形式。在次基础上得出结论，教师再适当加以指引即可。七、课前准备学生的学习准备：自制乘法小转盘空白的乘法口诀表格教师的教学准备：课件、乘法口诀表。八、教学过程（一）、整理乘法口诀表同学们我们学习了乘法的知识，学会了许多乘法口诀，今天这堂课我们把这些知识作进一步地归纳和整理。谁能把所有的乘法口诀一句不漏地背出来呢？1、回忆口诀。（1）全般一起回忆背诵乘法口诀，允许学生自由自在、杂乱无章的背。（2）分小组进行背诵。文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9名师精编优秀教案（3）同桌两两背诵。设计意图：多种形式的回忆背诵，学生总觉得有漏句现象，滋生一种如何记忆的欲望，为整堂课的整理口诀奠定了思想基础。2、自主整理全部乘法口诀。（1）同学们背口诀有漏句吗？请你们想一想，怎样背才能一句不漏呢？（学生会说可以整理成像16 那样的表格）（2）教师谈话：过去我们已整理了16 的乘法口诀表。出示口诀表。同学们还记得，第一横排是1 的乘法口诀，只有 1 句；第二横排是 2 的乘法口诀，有 2 句；第三横排呢？第六横排呢，6 的乘法口诀有几句？这个阶段我们又学了7，8，9 的乘法口诀，7 的乘法口诀有几句，应该排在哪里？（7 的乘法口诀有 7 句，应排在第七横排）8 的乘法口诀有几句，应该排在哪里？（8 的乘法口诀有 8 句，应排在第八横排）9 的乘法口诀有几句，应该排在哪里？（9 的乘法口诀有 9 句，应排在第九横排）（3）以四人小组为单位对上面几个问题进行讨论交流，在课前给的空白表格上按照一定的顺序整理出完整的乘法口诀。3、展示乘法口诀表。请各小组将自己整理的结果在投影仪上展示。在组内进行讨论、分析、文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 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ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9名师精编优秀教案对比、评议。对整理的有结构、书写美观的小组给予奖励。然后教师告诉学生，自己也和大家一样，整理了全部乘法口诀，并把整理的过程动态地展示出来。按 19 的顺序依次整理乘法口诀：（1）先在第一横行显示“一一得一”。（2）接着在第二横行显示“一二得二，二二得四”，整齐的排在“一一得一”的下面。（3）接着可提问：“下面应填哪几句口诀？”（4）依次出示3、4、5、6、7、8、9、的乘法口诀，按教材的排法排好，就形成了一张乘法口诀表。（5）师生共同再次有序的回忆。（二）、探索乘法口诀表的内在规律整理好表后，让学生整体观察这张表，提问：“你发现了什么？”“横着看有什么规律？竖看呢？斜看呢？可以和同桌讨论或四人小组讨论交流。通过说特征，加深对乘法口诀表的理解和记忆。(三)、利用乘法口诀进行计算。1、复习口诀的含义。文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9名师精编优秀教案任意挑出一句乘法口诀（两个因数不同的），让学生说说它表示什么意思。如“七八五十六”，可以表示 8 个 7 相加是 56，也可以表示 7 个 8 相加是56。2、找一找。找一找，哪几句乘法口诀可以用来计算两个乘法算式，哪几句口诀只能计算一个乘法算式呢？你找到了什么规律？3、加强 6、7、8 的口诀的练习。6、7、8 的乘法口诀是学生记忆的难点。所以在引导学生观察时应多加强化。4、以游戏的方式开展用口诀进行计算的活动。（1）已知两个因数求积的游戏。方法是：请一位学生随意说出一个两位数，另一个学生则将这个两位数的十位数字与个位数字相乘，并计算出结果，如果结果又是一个两位数，再将这个两位数的十位数字和个位数字相乘，直至结果是一位数或零。（2）已知积求两个因数的游戏。方法是：一位学生说一个积（两个一位数相乘的积）另一位学生则说出相应的口诀。这两个游戏可在两人间进行，也可在一人和全班其他学生中进行，还可在师生间进行。（四）、课堂练习1、在空格里填上数，仔细观察，你能发现什么规律？文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9名师精编优秀教案（1）仔细观察，想一想该如何来填这张表，同桌之间可以讨论、交流。（2）师点击课件，表中从左上角到右下角这一斜行的数闪一闪，可让学生思考：能否发现其中的规律？能不能很快地填出对角线上剩下3 个空格中的数？并将这一串数涂上自己喜欢的颜色。设计意图：由于1、4、9、16、25、36、49、64、81 这一串数字都涂上颜色，它将十分醒目的告诉学生，它就是这张数图的对称轴，两边对应方格的数是相等的，也就是一句口诀表示的两个算式的积是相等的。（3）启发学生进一步观察，还能发现其他的规律吗？只要学生能说出，都应给予鼓励，让学生感受探索的乐趣和发现规律带来的喜悦。2、用硬纸做两个圆（学生课前做好）转动一个圆，使里外每两个数对齐，说出每两个数乘得的积。每转动一格，算出9 个得数。可以以同桌为单位进行训练。3、括号里最大能填几。例如，（）429。这道题的意思是几和4 相乘，它的积比 29 小，答案就很多，1 44，比 29 小，2 48，比 29 小；3 412，比 29 小；4 416，比 29 小；5文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9名师精编优秀教案 420，比 29 小；6 424，比 29 小，7 428，比 29 小；8 432，比29 大了。题目中要求（）里最大填几，只能填（7）。（）855（）638 7（）30（）932 345（）60（）9（）638 设计意图：这是本册教材中首次出现的最值练习，为以后学习用竖式计算除法作准备 九、板书设计十、作业设计1、课堂作业本相关练习。2、填空42=（）（）16=（）（）=（）（）（）（）=24=（）（）=（）（）（）3、请你在空格里填上适当的数。25 35 文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9名师精编优秀教案十一、镇街交流意见十二、教师使用体会36 35 49 18 14 28 24 文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2 ZI1D4D9N1G9文档编码:CS3G2S9A1L4 HJ10I8I5R2Y2