高一数学映射与一一映射说课杨政奎.ppt

单值对应与一一对应 杨政奎 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 说 教 材 说教学目标 说教学方法 说教学过程 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 说 教 材 1、本节内容的特点 2、本节内容的分析 重点：单值对应和一一对应的概念 难点：对对应的理解 关键：单值对应的概念 返回 退出 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 说教学目标 1、知识要求：初步了解对应的概念；理解单值对应以及象、原象的概念；初步了解一一对应的概念。 2、能力要求：培养认识能力和抽象概括能力。 3、育人要求：养成严谨的思维习惯。 返回 退出 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 说教学方法 教法：谈话法、讨论法、练习法 学法：归纳——讨论——练习 教学手段：多媒体电脑与投影机 返回 退出 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 说教学过程 返回 退出 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. A 单值对应与一一对应 × Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 1 -1 2 -2 3 -3 -1 -2 -3 1 4 9 1 4 9 对应法则：x→y=x2,{x|x∈R},{y|y≥0} 对应法则：x→y=x2,{x|x≥0},{y|y≥0} A 单值对应与一一对应 × Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 举出两个在小学数学中渗透对应的例子 例如：连线 28 42 21 35 7× 3 4 5 6 A 单值对应与一一对应 × Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 举出两个在小学数学中渗透对应的例子 例如：填空 A 单值对应与一一对应 × Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.