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如何正确书写化学方程式说课稿

时间:2017-11-12 来源:台湾宾果28_台湾宾果28平台【官网授权】 点击:

hexintishi: jiunianjihuaxueshangceruhezhengqueshuxiehuaxuefangchengshitingkegao,fenxiangruhezhengqueshuxiehuaxuefangchengshitingkeganshouhejiluruhezhengqueshuxiehuaxuefangchengshishuokegao: 《ruhezhengqueshuxiehuaxuefangchengshi》jiaoxueshejiyi、jiaocaineirongfenxi

jiunianjihuaxueshangceruhezhengqueshuxiehuaxuefangchengshitingkegao,fenxiangruhezhengqueshuxiehuaxuefangchengshitingkeganshouhejilu

ruhezhengqueshuxiehuaxuefangchengshishuokegao:

台湾宾果28《ruhezhengqueshuxiehuaxuefangchengshi》jiaoxuesheji

yi、jiaocaineirongfenxi

台湾宾果28benjiekezhuyaojieshaohuaxuefangchengshideshuxieyuanzeheshuxiebuzhou,qizhongdianhenandianshihuaxuefangchengshidepeiping。benjiekewanchenglehuaxueyongyudejiaoxue,shixueshengxuehuiliyonghuaxueshilaibiaoshiwuzhizhijiandehuaxuebianhua,bingweihuaxuefangchengshidejisuandaxialejichu。erqiehuaxuefangchengshiguanchuanyuzhenggezhongxuehuaxuedejiaocaizhong,shixuexihuaxuedezhongyaogongju。

er、jiaoxuemubiao

台湾宾果28zhishiyujineng: lejieshuxiehuaxuefangchengshiyingzunxundeyuanze;huiyonghuaxuefangchengshizhengquebiaodayibandehuaxuefanying。

guochenghefangfa: renshikexuetanjiudeyiyihejibenguocheng,nengfaxianwenti,jinxingchubudetanjiuhuodong;tongguoxueshenghezuotanjiuhezizhutanjiu,peiyangxueshengfaxianguilv、renshiguilvheyunyongguilv,peiyangxueshengkexuedesiweifangfa。

台湾宾果28qinggantaiduyujiazhiguan: jiehehuaxuefangchengshishuxieyuanzedejiaoxue,rangxueshengxingchengshishiqiushidekexuetaidu;kefushuxieshangdesuiyixinghemangmuxing,yangchenglianghaodexiguan,buduanpeiyangquanmiansikaowentidenengli。

san、jiaoxuezhongdiannandian

台湾宾果28zhongdian: huaxuefangchengshideshuxieyuanze;huaxuefangchengshidepeipingfangfa。

nandian: huaxuefangchengshidepeipingfangfa。

si、xueqingfenxi

台湾宾果28xueshengzaixuexibenjiekezhiqianyijingxuexiguozhiliangshouhengdinglvhehuaxueshidenghuaxueyongyu,chubuzhangwolezhiliangshouhengdinglvdebenzhihehuaxueshideshuxiejihanyi。xueshengyijingjubeide“xianbeizhishi”,houjidexuexiyaoyiciweijichu,zhuyixinzhishiyuyiyouzhishizhijiandelianxi。xueshengyunyongyijingxuexiguodezhishiduihuaxuefangchengshideshuxiekeyijinxingyuce。

cunzaidewenti:

   yuansufuhao、huaxueshibushulian,zaochengshuxiefangchengshikunnan。

台湾宾果28wu、jiaoxuecelvexuanzeyusheji

huaxuefangchengshishizhongyaodehuaxueyongyu,shixuexihuaxuebibeidegongju。benjiekedeyaoqiubingbugao,bingmeiyounanyulijiedegainianhenanyizhangwodejineng,benjieke,taiwanbinguo28shituzaixueshengdetounaozhongjiangouqishiyanshishiyuhuaxuefangchengshidemiqielianxi,jianchiyixueshengweizhuti、wentiweizhongxin,zuzhixueshengzaijutidehuaxuefangchengshideshuxiezhongdadanchangshi,chongfenbaoluwenti,ranhou,yixueshengdewentizuoweijiaoshideqidianzhankaibutonghuanjingdejiaoxue,zaiguinazongjiehuaxuefangchengshideshuxieyuanzejishuxiebuzhou。zheiyangzuodemudeshichuangshexueshengcanyujihui,peiyangtamendexiezuoyishi,jiaojixueshenghuoquzhishidetujinghesikaowentidefangfa,rangxueshengganshoudaochenggongdexiyue,congertigaotamenxuexihuaxuedexingqu。

liu、jiaoxueguocheng

教师活动 学生活动 设计意图

daoruxinke:

[yanshishiyan]meitiaoranshao

[tichuwenti]zheigebianhuashiwulibianhuahaishihuaxuebianhua?(jieshaoshengchengdebaisegutijiaoyanghuamei)ruhelaibiaodazheigehuaxuebianhuani?

台湾宾果28zhenduixueshengshuxiedebiaodashiyiyizuoyidianping。

1、guanchabingjiluxianxiang

2、shuxiebiaodashi

kenengchuxiandebiaodashi:

mei+yangqi yanghuamei

mg+o2 mgo

台湾宾果28以旧导新,为学生学习新知识提供必要的背景知识,促使新旧知识建立起实质性的联系,将学生引入到预定的教学任务和程序中来。也是出入激发学生学习热情和发展学生观察识别能力的需要。

台湾宾果28〔zuzhitaolun〕zheixieshizinengchengweihuaxuefangchengshima?weishenme?

怎样才能把上式改为化学方程式呢? 学生分组讨论(教师提示: 从反应物、生成物、反应条件、各种构成物质的粒子的相对数量关系、各物质间的质量关系等不同角度进行分析讨论) 通过讨论,学生建立合作的伙伴关系,通过多角度的讨论,有助于学生加深对知识的理解。

tuijinxinke

台湾宾果28yi、huaxuefangchengshideshuxieyuanze(banshu)

1、bixuyikeguanshishiweijichu

2、zunshouzhiliangshouhengdinglv

[chushitaolunti](1)c + o2  co2

yuh2+ o2   h2o 

youshenmebutong?

(2)h2 + o2   h2ozenyangxiecaichengshihuaxuefangchengshi?

er、huaxuefangchengshideshuxiebuzhou:

yilinzaikongqizhongranshaoshengchengwuyanghuaerlinweili,yindaoxueshengtansuoshuxiehuaxuefangchengshidefangfa。(jiankeben98ye)

1、xieshi;

2、peiping;

3、biaozhu;

4、jiancha。

[xiaojie〕shuxiehuaxuefangchengshijutibuzhou:

台湾宾果28zuoxiefanyingwu,youxieshengchengwu;

台湾宾果28xiehaohuaxueshi,jideyaopeiping;

duanxiangaidenghao,tiaojianyaozhuqing;

shengchengqitihuochendian,shangxiajiantoulaibiaoming。

1、yindaoxueshengfenzutaolunruhezaihuaxuefangchengshizhongtixianfanyingtiaojianheshengchengwudezhuangtai

台湾宾果282、guinaxueshengtaolundejieguo:

(1)dianran≠jiare(   )

台湾宾果28    dianran≠ranshao

    gaowen≠jiare(   )

(2)zhiyoushengchengwuzhongchuxianqitishibiao,zhiyoushengchengwuzhongshengchengchendianshibiao

学生观察分析

1、fuhaobiaoshi:

p+o2 p2o5

2、peiping

p+o2       2p2o5(qishurushou)

p+5o2        2p2o5(zuoyoukaigong)

4p+5o2————2p2o5(genzongzhuiji)

台湾宾果284p+5o2 2p2o5(youshiyouzhong)

台湾宾果281、yuedukeben98yebiaozhutiaojianhejiantoudezhishi

2、qingnizhenduan:

台湾宾果28huaxuebingyuanlixiaomingshoujinlebaweibingren,qingniyongxinzhenqingbingyin:

台湾宾果282h2o   2h2↑+ o2 ↑

台湾宾果28mg + o2  mgo2 

c + o2   co2 ↑

台湾宾果282kmno4 = k2mno4 + mno2 + o2↑

台湾宾果28kclo3   kcl+  o2 ↑

cuso4+2nao=na2so4+ cu(oh)2

台湾宾果283fe + 2o2   fe2o3

3Fe+2O2↑===Fe3O4 台湾宾果28这样学生不仅能区分化学方程式与化学反应式的不同,重要的是明白了化学方程式能体现质量守恒定律,这为学生学习化学方程式的写法起到了“水到渠成”的作用。

zaifangchengshidepeipingfangfadejiaoxuezhong,jiezhutiwen,jifaxueshengshengyi、taolun、yanjiu,keqiqisi,faqizhi。

台湾宾果28tongguotaolun、taiwanbinguo28zhongdebutongguandiandejiaofeng,keyibuchong、xiuzheng、jiashenmeigexueshengduiwentidelijie。

xiaoshishenshou:

xiechuxialiefanyingdehuaxuefangchengshi:

(1)shuizaizhiliudiandezuoyongxiashengchengyangqiheqingqi

(2)jiaregaomengsuanjiazhiquyangqi

(3)yongguoyanghuaqing(h2o2)yueryanghuamengzhiyangqi

台湾宾果28(4)jiawan(ch4)zaiyangqizhongranshao,shengchengeryanghuatanheshui

(5)mutanzaigaowenxiaheyanghuatongfanyingshengchengtongheshui

台湾宾果28[fansipingjia]: tongguobenketi,nihuodelenaxiezhishi?renshiyoushenmetigao?nengliyoushenmezhangjin?xuedekuailema?baniderenshihetihuiyudajiagongxiang。

[jiaoshipingjia]benjiekexuexile“ruhezhengqueshuxiehuaxuefangchengshi”,mingbaileshuxiehuaxuefangchengshiyaozunshoulianggeyuanze,yejiushishuxiehuaxuefangchengshishi,zaishizizuo、youliangbiandehuaxueshiqianmianyaopeishangshidangdehuaxuejiliangshu,shidemeiyizhongyuansudeyuanzizongshuxiangdeng,zheigeguochengjiushihuaxuefangchengshidepeiping。

课后作业: 课本第99页1、3、4、5题 学生练习。

(1)huizhengqueshuxiehuaxuefangchengshi。

(2)shuxiehuaxuefangchengshi, huaxuefanyingshiyiju,yuansufuhao、huaxueshishijichu。

(3)peipinghuaxuefangchengshishi,huaxuejiliangshudexunzhaoshiyouyidingguilvde,tongshishuxieyidingyaogenjuyuanze,shuxieyaowanzheng,buyilourenheyigetiaojianhuofuhao。

倾听。 台湾宾果28精讲后,及时练习不仅容易段段清,而且便于层层深,这是一种知识的整合和理解的深入实践的过程。

peiyangxueshengtaiwanbinguo28、biaodadenengli,fasanxueshengsiwei,kaituoxueshengshiye。

banshusheji

yi、huaxuefangchengshideshuxie

1、shuxieyuanze:

(1)bixuyikeguanshishiweijichu  (2)zunshouzhiliangshouhengdinglv

2、shuxiebuzhou:

台湾宾果28  (1)xieshi  (2)peiping  (3)biaozhu (4)jiancha

er、huaxuefangchengshidepeiping

qi、jiaoxuefansi

benjiekeyixueshenghuodongweizhu,tupodenandianshifangchengshidezhengqueshuxie。tongguojiaoxueshijian,benshejijibenfuhexueshengderenzhiguilv,youliyuxueshengtongguojiuzhijianlixinzhi,duoshuxueshengjienaleshuxiehuaxuefangchengshiyingzunxundeyuanzeyijiduijiandanhuaxuefangchengshidepeipingdefangfa,mingquelezhengqueshuxiehuaxuefangchengshideyibanbuzhou。zaichangshishuxiehuaxuefangchengshidehuanjiezhong,xueshengzizhuxuexi,hezuoxuexiyutanjiuxuexidengxuexifangshiqudeleshixiao,xueshengduishuxiehuaxuefangchengshidexuexibiaoxianchujiaohaodexuexixingqu。

 



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