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1、1/13 空气质量与健康（第 1 课时）的教案设计与案例广东省茂名市官山学校王制芳 教案设计思路与说明 空气质量与健康这节课需要2 课时，这为第1 课时的教案设计与案例。根据全日制义务教育生物课程标准（实验稿）的要求，这节课应“探究空气质量状况和人体健康的关系”，在教案设计中我改变过去过分强调知识传承的倾向，将重点放在培养学生的探究能力上，将科学探究贯穿于教案的各个环节。首先，回顾交流，实例引入，让学生分析，初步认识空气质量与人的健康息息相关。其次，组织学生积极参与，主动探究，通过分组讨论、小组竞赛、交流调查结果来达到教案目标。最后，让学生自由畅谈，提高认识。整节课在探究过程中进行，充分发挥学
2、生的主观能动作用，让学生在主动参与、乐于探究的学习活动中培养搜集和处理信息的能力、获得新知识的能力、分析和解决问题的能力以及交流与合作的能力等，同时，注重增强学生的环保意识。学生情况 七年级的学生活泼好动，好奇心、好胜心都很强。有些学生对一些呼吸道疾病如咽喉炎、气管炎、鼻炎等有切身体验，学生周边有很多人吸烟，学生对装修也常见，同时经常感受到汽车、摩托车尾气的刺激性气味，所以，学生对造成空气污染的主要原因有切身的体验。但学生对生活中出现的身边问题可能没有关注。希望能过这节课的学习能引起学生高度关注身边的一事一物。2/13 教案目标 1、知识目标：（1）使学生能够描述空气质量对人体健康的主要影响，
3、明确空气质量与人体健康的密切关系；（2）使学生了解茂名市区的空气质量情况，懂得环境保护的重要性。2、能力目标：通过小组调查、讨论、竞赛等教案活动，培养学生自主学习、搜集和处理信息、分析和解决问题、合作与交流等能力。3、情感态度与价值观目标：通过本节的学习，增强学生的环保意识，培养学生环保的自觉性和道德观，以及对社会的责任感。教案重点、难点 1、空气质量对人体健康的主要影响；2、培养学生的科学探究能力。教案方法 采用问题探究教案法与讨论法、竞赛法相结合的教案法。教案手段 多媒体辅助教案。课前准备 1、教师准备：自制课件、到环保局等单位调查搜集茂名市区空气质量的资料。2、学生准备：学生提早一周以4
4、-6 个人为小组通过实地考查、访问调查或资料收集等方法了解茂名市区的空气质量，每人写一篇题为谈谈茂名市区的空气质量的短文。文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A
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6、J4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 H
7、F1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL
8、9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码
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10、 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J43/13 教案流程图 回顾交流，实例导入教师设问学生作答积极参与，主动探究教师设置探究问题学生阅读思考教师巡视学生分组讨论教师点拨学生分组竞答
11、教师列出图表资料学生分组讨论分析教师点拨学生边提问题，边竞答课前调查，堂上交流教师布置课前调查学生课前分组调查教师点评学生代表交流调查结果自由畅谈，提高认识学生自由畅谈教师评价文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ
12、4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF
13、1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9
14、A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:
15、CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10
16、HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 Z
17、L9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J44/13 课堂实录 一、回顾交流，实例导入师：我们先回顾上一节所学的内容。呼吸道对吸入的
18、气体有什么作用？生：呼吸道能对吸入的气体进行处理，使吸入的气体更加温暖、湿润、清洁。师：对。那么，为什么说保持环境中的空气新鲜、清洁又是非常重要的呢？生：因为呼吸道对空气的处理能力是有限的，如果不保持环境中的空气新鲜、清洁，人就会患上气管炎、肺炎等疾病。所以，我们要保持空气的新鲜、清洁。师：很好！掌声鼓励。（掌声）师：我举一个真实的例子，请大家来分析：有位老师，她在茂名市区读中学的时候，就患上了慢性鼻炎，吃了很多药，但不能治好。她大学毕业后，分配到离市区较远的农村中学教书，一年以后，她的鼻炎不知不觉地好了。四五年后，她又调回市区中学教书，她的鼻炎又复发了。这是为什么呢？（很多同学举手，争着回答
19、）生：我想，应该是农村的树木多，空气新鲜、清洁，使她不容易患鼻炎，而茂名市区的工厂多，车辆多，空气很不好，所以，她就容易患鼻炎。师；分析得很好！表扬他。（掌声）从这例子可见，空气质量与我们的健康息息相关。今天这节课，我们就来探讨这个问题。请同学们打开课本52 页。（屏幕显示课题：第三节空气质量与健康）二、积极参与，主动探究师：我们今天通过自己阅读思考问题，小组讨论、小组竞赛来学习这节课。同学们请带着屏幕上的问题阅读思考“资料分析”中的内容。（学生认真阅读，教师在黑板列出小组竞赛计分表并巡查）。（屏幕显示图片资料和探究题）讨论题：1、你知道哪些常见的呼吸系统疾病？2、在什么样的环境中生活和工作的
20、人群，呼吸系统疾病发病率高？3、请你以班中同学为例，统计你们在一天24 小时内，大约有多长时间是在室内生活的？4、请结合资料 3，分析居室的空气质量与人们健康的关系。文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4
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24、Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4
25、P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N
26、2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J45/13 5、请结合资料 4，分析居室的空气质量与人们健康的关系。6、除了以上资料所提到的，影响居
27、室空气质量的因素还有哪些？7、请你根据搜集的有关资料，分析呼吸系统疾病引起的死亡率为什么会逐年上升？8、你认为污染空气的原因有哪些？9、为了保持环境中的空气新鲜、清洁，我们应该怎样做？师：好，大家已阅读思考了，现在开始前后四位同学一起讨论。第一组主要讨论 1、2、9 题，第二组主要讨论3、4、9 题，第三组主要讨论5、6、9 题，第四组主要讨论7、8、9 题。（各组同学热烈讨论着），（五分钟后）请同学们讨论到此，现在开始小组竞赛，每答对一个问题得1 分，看今天哪组能得冠。第1题：你知道哪些疾病是呼吸系统疾病呢？请第一组的同学回答。第一组生：鼻炎、咽喉炎、肺结核。师：对，除这些以外，还有吗？第一
28、组生：还有气管炎、支气管炎、肺炎。师：很好！还有吗？第一组生：还有非典型肺炎和肺癌。师：不错！去年流行的非典型肺炎传染性很高，死亡率达到5%，当时谁都害怕感染这种病。肺癌更是一种难治疗、死亡率高的呼吸系统疾病。第一组加1分。（掌声）那么，在什么样的环境中生活和工作的人群，呼吸系统疾病发病率高呢？还是请第一组的同学回答第2 题。第一组生：在街上工作的交通警察，在工业区周围的居民。第一组生：在居住卫生条件差的居民。师：对！看能不能用一句话概括起来？第一组生：在空气质量差的环境中生活和工作的人群呼吸系统疾病发病率高。师：概括得很好！第一组又加1 分。（掌声）请第二组的同学来回答第3题：说说你一天大约
29、有多长时间在室内生活？第二组生：约 20 个小时。第二组生：约 22 个小时。第二组生：约 21 个小时。文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文
30、档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9
31、K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6
32、C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J
33、4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4
34、O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4
35、O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J46/13 师：他们的回答都对，第二组加1 分。（掌声）我们平常一天至少有20 小时以上是在室内度过。因此，室内的空气质量对我们来说是非常重要的。现在请第二组的
36、同学来回答第4 题：请结合资料3，分析居室内的空气质量与人们健康的关系。第二组生：香烟中含有尼古丁等有毒物质，它会使吸烟者容易患上气管炎、肺癌等呼吸系统疾病。师：对！还有同学要补充吗？第二组生：吸烟吐出的烟雾还会影响周围人的健康。第二组生：还会影响儿童和孕妇的健康。师：答得好！第二组又加1 分。（掌声）吸烟者是主动吸烟者，周围的人被称为什么？生齐答：被动吸烟者。师：对。吸烟者吸烟时吐出的烟雾污染了空气，这些烟雾除了刺激眼、鼻和咽喉外，吸烟也会明显地增加人们患肺癌和心血管疾病的机会，如冠心病就是很多人因为吸烟而引起。而且还大大增加儿童和青少年患呼吸系统疾病的机会，如咳嗽、气喘、痰多、损坏肺功能和
37、影响肺部发育等。吸烟者年龄越低，受害的程度就越严重。可见，吸烟会造成空气污染，直接影响人们的健康。我们的同学中，有没有人吸烟的呢？（有的学生说“有”，有的说“没有”）没有就最好。如果有，就请这些同学醒悟过来，立即开始戒烟。我们已知道吸烟会危害自己和他人的健康，那么，你们想对那些执迷不悟的烟民说些什么呢？请抢答。（“我来！我来！我来！”抢答的呼声很高）第三组生：我要对他们说，吸烟有害健康，请立刻戒烟！第一组生：我会对他们说，吸烟很容易患肺癌，你们会死的，你们不怕死吗？第四组生：我想对他们说，在公共场所吸烟会影响他人的健康，请你们不要吸烟！第二组生：我想对他们说，吸烟会造成空气污染，影响你和他人的
38、健康，请你们立刻戒烟！师：这几位同学说得好不好？生齐答：好！文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P
39、4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2
40、L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z
41、1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X
42、4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5
43、N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ
44、4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J47/13 师：每组加 1 分。（掌声）好，现在请第三组的同学来回答第5 题：请结合资料 4，分析居室的空气质量与人们健康的关系。第三组生：装修用的油漆含有有毒物质，人们吸入后会中毒，影响人们健康，会使孕妇
45、生出畸形胎儿。师：很好！第三组加1 分，（掌声）平时大家都闻到装修的材料有一股臭味，是吗？（学生齐答：是。）装修用的材料很多都含有甲醛、苯、甲苯和二甲苯等挥发性的有机化合物，这些物质都有特殊的气味，它们聚集到一定的浓度，可以使人感到不适，严重时可以使人患呼吸系统疾病和其他疾病，因此，装修会污染空气，影响居室的空气质量，直接影响人们的健康。但是，现在大多数人买了房子都要装修一番。那么，在装修时，我们要注意什么问题呢？自由抢答。第一组生：要戴口罩。第三组生：要打开门窗，使室内通风透气。第二组生：装修后要过一段时间，才搬进去住。第四组生：室内种一些植物。第一组生：使用环保的装修材料。师：都正确！第一
46、组加2 分，第二、三、四组各加1 分。（掌声）请第三组的同学来回答第6 题：除了课本介绍的吸烟和装修会污染居室空气，还有哪些因素会影响居室的空气质量呢？第三组生：厕所发出的臭味、垃圾发生的臭味、市场内的臭味。师：还有吗？第三组生：厨房的油烟。第三组生：新购买的家具发出的气味。第三组生：工厂排出大量的废气。师：他们的回答都对！第三组加1 分。（掌声）请第四组的同学来回答第7题：请根据课本的资料，或你搜集的有关资料，分析呼吸系统疾病引起的死亡率为什么会逐年上升？第四组生：因为环境越来越差，空气质量也越来越差。所以，呼吸系统疾病引起的死亡率逐年上升。师：完全正确！第四组加1 分，（掌声）空气质量越来
47、越差，也就是空气质量恶化，空气质量恶化是由于空气污染而引起的，那么，空气污染的原因有哪文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z
48、4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P
49、4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2
50、L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z1Z4O9K10 HF1X4P4O6C7 ZL9A5N2L2J4文档编码:CJ4Z