《习题课教学方法法探究》由会员分享，可在线阅读，更多相关《习题课教学方法法探究（27页珍藏版）》请在金锄头文库上搜索。
1、习题课教学方法习题课教学方法 法探究法探究重庆八中 戴光敏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.n n研究课堂教学方法，改变教学方式，可以提高物理复研究课堂教学方法，改变教学方式
2、，可以提高物理复 习备考效率习备考效率n高三物理复习备考的过程，其实就是与习题做斗争的 过程。习题教学贯穿整个高三物理教学的始终，不管 是物理概念还是规律，不管是理解能力、推理能力、 分析综合能力还是应用数学处理物理问题的能力，都 需要通过习题的形式呈现，所以习题教学在高三物理 教学中占有重要的地位。可是我们经常发现，有些试 题老师讲了很多遍，学生做了很多遍，考试考了很多 遍，结果还是错了很多遍！下面以习题教学为例，谈 谈如何提高习题教学的课堂效率。n习题教学中，学生是否掌握，不在于老师讲了多少遍 ，而是在于老师怎么讲，讲什么，什么时机讲，谁来 讲，为什么这样讲。Evaluation only
3、.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 Aspose.Slides for .NET 3.5 Client Profi
4、le 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 Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.
5、0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.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
6、 Ltd.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.n n二、怎么讲？二、怎么讲？n 怎么讲对于习题教学是十分重要的，它体 现了教师在课堂教学中的教学设计，教学 策略，教学管理及课堂
7、的调控能力，反映 了教师的教学水平和教学功底，它将直接 影响课堂教学效率的高低。n n1 1讲一题多解，提高思维的深度。讲一题多解，提高思维的深度。n例题：在水平轨道上有两列火车A和B相距 s,A车在后面做初速度为v0、加速度大小为2a 的匀减速直线运动,而B车同时做初速度为零 、加速度为a的匀加速直线运动,两车运动方 向相同.要使两车不相撞,求A车的初速度v0满 足的条件.Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with As
8、pose.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 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 A
9、spose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.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.n n2 2讲一题多变，提高思维的广度讲一
10、题多变，提高思维的广度 n “一题多变”即是在原题的基础上适当变换 题给条件和要求，从而构成新题。通过对 这些试题进行改变，使学生得到全新的锻 炼，提高思维的广度和深度。一题多变时 ，可以保持条件不变，变换要求；也可以 保持要求不变，变换条件；还可以条件和 要求同时改变。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. Copy
11、right 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.例题：一质量M1g的物体从光滑斜面面上h=1.8m 处A点由静止释放，滑到斜坡底端B点后沿水平的 滑道再滑行一段距离到C点停下来,已知物体与斜 面和地面间的动摩擦因数均为=0.2， 斜坡与水平 滑道间是平滑连接的，整个运动过程中空气阻力 忽略不计，（g=10m/s2) （sin37=0.6，cos37=0.8 ）,试求： （1）物体从斜坡滑下的加速度为多大? （2）物体滑到B点时的速度大小？ （3）物体在水平地面滑行多远？Evaluation only.Evalu
12、ation 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 Aspose.Slides for .NET 3.5 Client Profile 5.2
13、.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 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. C
14、opyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.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.E
15、valuation 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.在解决这道题的时候，我们可以通过如下的提问 来帮助学生掌握物理的过程，帮助学生掌握如 何去分析复杂问题，去如何找到问题的突破口 。 1、粒子在
16、速度选择器中由N1到N2的过程中受到 什么力的作用？ 2、粒子在速度选择器中由N1到N2的过程中做什 么运动？ 3、粒子进入磁场时的速度为多大？ 4、粒子在磁场中受到什么力的作用？ 5、粒子在磁场中做什么运动？ 6、粒子在磁场中运动的圆心在哪里？作出运动 轨迹图。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.7、粒子在磁场中运动的时间与什么因素有关？ 8、怎样求粒子在磁场中运动半径？ 9、粒子均打到P1P2连线上，半径有什么范围？ 10、粒子均打到P1P2连线上，速度有什么范围？ 11、盘转动角速度的取值范围？如果学生能够按照这样的提问来解题，相
