初中化学教学案例2

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1、初中化学教学案例2初中化学教学案例《水的组成》教学案例及反思河北中学李建辉一、教学背景与定位：教学起点分析：在上节中学生已经了解到在物理变化中分子本身没变，本节继续采用学生熟悉的水做知识载体，通过对水分解产生氢气和氧气的微观过程的描述，使学生认识到分子在化学变化中分解成原子，原子再重新组合形成新的分子，从而理解化学反应的实质。教学的起点定位于引导学生从观察宏观现象到用微观观点分析化学反应的实质。教学主要方式：实验探究，信息技术与学科整合。二、教学资源与设备：仪器与药品：水电解器1３套（玻璃管中注满了10%~15%organizationsystema

2、ndworkingmode,theselectionofanumberofmunicipalstrengtheninggrouptobuildinnovationandstrengthentheorganizationofthebasiclevelorganizationsadvancedmodel.(seven)themanualworkoftheCommunistYouthLeagueOrganizationpublished<>and<>Leaguebranchofmanualwork,topromotetheuseoftwomanualsin

3、thecity'sorganizationsatvariouslevels.Thecountycommittee,directlyunderthegroup(work)isunderthejurisdictionofgrassrootsLeagueandgroup(total)usingbranchratioshallnotbelessthan70%.Three,tofurtherstrengthenthegroup'sleadershipandteambuilding(a)tostrengthentheleague'sleadershipatall

4、levelsofconstruction.ContinuetodoagoodjobofmunicipalPartyCommitteeOrganizationDepartment"onthestrengtheningoftheCommunistYouthLeaguecadresmanagementopinionsimplementation.Topromotethegroupcounties(autonomouscounties,cities)Commissionandcitydirectlyunderthegroup(workers)appointe

5、dtocarryoutthe"Five"teambuildingactivities.ImprovetheLeagueAssociationDepartmentworkingmechanism.ConscientiouslyfulfillthedutiesofCO,combinedwiththecitygroupdirectlyunder(the)Committeeofthegeneralelectionandtheadjustment,activelyjointlywiththeunitwherethepartyorganizationdepart

6、mentgoodgroupleadershipselectionwiththework.DoagoodjobinmunicipalPartycommitteeassistantcommitteeleadershipandleadingcadresoftheannualassessmentwork,adheretoandimprovetheassistantsecretaryoftheCommunistYouthLeaguetalksystemgroupToweaveindividualconversationandcollectiveconversa

7、tion,tostrengthenthecommitteesofalllevels,theStandingCommitteeoftheStandingCommittee,theestablishmentofasoundsystemofcentralgrouplearning,thesystemofinvestigationandstudy,thesystemofimportantissuesandthereportingsystem.(two)tostrengthentheworkofeducationandtrainingofcadrestocon

8、scientiouslyimplementtheCentralCommittee."Ontheimpleme