圆的周长说课稿课件ppt.ppt

人教版六年级上册 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. IF语句的应用 4 1236 5 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. IF语句的应用地位和作用: 《圆的周长》是人教版小学数学六年级上册第五单元“圆”的第二课时,这部分内容是在学生初步认识了圆,掌握了长方形、正方形周长的基础上来进一步学习的。它为学习圆的面积、圆柱、圆锥做好准备, 起着承前启后的作用。教材析分 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. IF语句的应用教学目标教材析分教学目标知识与技能: 理解圆的周长和圆周率的意义,推导圆周长的计算方法,并能正确计算圆的周长。过程与方法: 通过动手实践、合作交流等活动,: 让学生在探究中体验成功,增强自信。重点: 推导出圆周长的计算公式。难点: 理解圆周率的意义,探索圆周长的计算公式。 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. IF语句的应用教学重点教学难点 1 、利用实验教学法, 引导学生认识理解圆周率,并推导出圆周长的计算公式。 2 、运用独立思考、合作交流等学习方式,达到发展智力,培养能力的目标。教法法学 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. IF语句的应用创设情境,建立圆周长的概念. 一教学程流小组合作,探究测量圆周长的方法二探究圆周率的意义,推导圆周长的计算方法三运用知识,解决问题四全课小结,归纳升华。五 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. IF语句的应用一、创设情境,建立圆周长的概念. (1)做相框所需材料的长度实际是指正方形的什么呢? (3)做圆形相框所需材料的长度实际又是指什么? (2)怎样计算正方形的周长呢? Evaluation only.