八年级物理上册1.1温度的测量探究素材(新版)北师大版.doc

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1、1温度的测量 探究目的:让学生根据所学知识设计并制作一支温度计培养学生应用所学知识的能力、设计能力和实验动手能力探究过程:提出问题:能否自己设计一个温度计?给出实验器材:一个装满红色水的小瓶,上面插有一支玻璃管 引导学生先将小瓶由冷水烧杯放入热水烧杯,观察并说明怎样比较出温度高低的(学生讨论,举手回答,其他学生评估;)进一步提出新的设计要求:怎样用小瓶测出温度值?在学生回答的基础上介绍量程和分度值(学生讨论,举手回答,其他学生评估;讨论结果:刻上刻度就可以)进一步提出新的设计要求:怎样将小瓶改装,使它测量温度更方便,更实用? (学生讨论,举手回答,其他学生评估,补充直至接近真实温度计) (以上

2、器材和指导步骤供参考)最后让学生比较自己设计的温度计与真实温度计的相同点与不同点(学生比较、演示,其他同学评估、补充、教师总结评估)探究结果:学生根据自己的分析和制作过程写出一份完整的探究报告,报告中应包括:设计方案、制作器材、制作方法、使用方法和自己设计的温度计与真实温度计的相同点与不同点的比较活动说明:此探究活动可以加深学生对摄氏温度的理解,让学生体会学以致用的过程,又可以培养学生的设计能力,而且让学生在活动的最后享受设计成功的喜悦,同时发现自己设计上的不足,并有进一步改进的愿望和信心,培养精益求精的作风和精神评估标准:只要学生能经过独立思考并结合所学知识和活动要求上交一份报告就要进行表扬和鼓励,报告质量高的,并且上交了制作成品的就要给与充分的肯定和表扬,最好能给与加分鼓励

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