《除数是一位数的除法口算除法课件数学三级下人教》由会员分享，可在线阅读，更多相关《除数是一位数的除法口算除法课件数学三级下人教（32页珍藏版）》请在金锄头文库上搜索。
1、Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.生活与数学梦幻城堡智慧殿堂第二章 除数是一位数的除法Evaluation only.Evaluation only. Created wit
2、h Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.1.知识与技能：使学生在具体的情境中，理解和 掌握整十、整百数和整千数除以一位数的口算方 法，能正确地进行计算。 2.过程与方法：通过观察、操作、讨论的活动， 使学生经历探索口算除法的全过程。渗透转化和 迁移类推的数学思想，加深
3、对口算除法的理解， 发展数感。 3.情感与价值观：让学生感受数学与日常生活的 联系，在探索的过程中获得成功的体验。 教学目标Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.Evaluati
4、on only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.一、复习导入一、复习导入手工课要用彩色手工纸， 我先数数这一盒有多少 张，好发给同学们。Evaluation only.Evaluation only. C
5、reated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.（1）1盒里面有（ ）沓手工纸，10沓有（ ）个十张；（2）2沓纸有（ ）张，有（ ）个十张；（3）80张纸有（ ）沓；（4）2盒纸有（ ）张，（ ）个百张；（5）400张能装（ ）盒，有（ ）个百张。一、复
6、习导入一、复习导入10102028200244Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Evaluation only. Created with A
7、spose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.把60张彩色手工纸平均分给3人，每人得到多少张？从题中，你知道了哪些信 息？问题是什么？怎么列 式呢？你会口算吗 ？603二、探究新知二、探究新知知道了有60张彩色手工纸，还知道了要平均分给 3人，求每人得到多少张。 应该用除法解答。
8、（一）提出问题例1Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.二、探究新知二、探究新知632603=20我们一起来算 算吧。6沓平均分给3人， 每人得到2沓。（二）探究算法 例1Eva
9、luation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.603206个十除以3是2个十， 就是20。二、探究新知二、探究新知60320（二）探究算法还可以怎么想？例1Evaluation only.Ev
10、aluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.抢答题：（卡片出示正反两面） 55= 42 93 84 505= 402 _ _根据前两组组的规规律 ，猜一猜后面每一组组算 式，口算后说说出算理。（二）探究算法903804二
11、、探究新知二、探究新知Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.二、探究新知二、探究新知想一想：6003 200你是怎样计算的？ 和同学交流一下。600里有6个百，平均分成3份 ，每
12、份是2个百，也就是200。（二）探究算法 例1Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.二、探究新知二、探究新知1203 401234 1203 403个班上手工课一共用去120张彩
13、色手工纸，平均每班用了多少张？应该怎样列式？ 又该怎么算呢？可以把120看 成12个十。12个十除以3是4 个十，就是40。（二）探究算法 例2Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Lt
14、d.二、探究新知二、探究新知663把66张彩色手工纸平均分给3 人，每人得到多少张？你知道了哪些 信息？要求什 么呢？要把66张彩色手工纸平 均分成3份，求每份是多少。（二）探究算法例3 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2
15、004-2011 Aspose Pty Ltd.二、探究新知二、探究新知 （二）探究算法22应该怎样算 呢？每份分得 了2沓零2张，就是 22张。663把66张彩色手工纸平均分给3 人，每人得到多少张？例3 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.C
16、opyright 2004-2011 Aspose Pty Ltd.二、探究新知二、探究新知60320 632 2022222663怎样口算呢？6个十除以3是2个十，6个一除以3是2个一， 2个十与2个一合起 来就是22。（二）探究算法663例3Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.先算再算二、探究新知二、探
