二下数学教案4单元

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1、课题CountnumbersMar,29备课方式□集体（负责人奚志芳）□个人课时分配1课时问题收集与学情分析1thekidsareinterestedinmatns.2theirlearningattitudeareverygood.3theymayknowthecountingunits.教学目标知识与能力目标1trytocountsquarestolearnnewcountingunits.100%2trytoknowrelationshipbetweenthem.90%过程与方法目标Activity“tocount

2、thenumbers”todevelopthesenseofmaths.教学重/难点Learntoknowcountingunits”thousandand10thousands”.情感态度价值观目标Togetlargenumbersinourlife.Toknowtheimportanceofnumbers.教学形式Ss’activitiescentered学法指导Independentteamwork德育渗透内容Togetlargenumbersinourlife.Toknowtheimportanceofnumbers.教

3、学辅助手段准备及检查□多媒体ppt□学具□教具□实验准备□辅助材料□其他准备□教学过程设计：一、reviewCountnumbersonebyoneCountnumbersingroupof2Countnumbersingroupof5countnumbersingroupof10Countnumbersingroupof100Q:howmanycountingunitsdidwelearn?Whatistherelationship?二、newlesson1)leadinT:showthemppt.doyouknowthesep

4、ictures?S:talkaboutthepicturestheyknow.T:readthesenumbersS；followtheteacherT:whatcanyougetfromthesenumbers?S;largerthanbefore□问题设计及教学呈示重点提示复习数数复习计数的单位书写板书ppt呈示图片，学生进入讨论熟读这些数字引入新知：生活中的大数T:canyoufindlargenumbersinourlife?S:talkaboutlargenumberstheyknew2)tolearncountingu

5、nitsthousandT:showthem1bigcube,howmanysmallcubesinthisone?Activity:kidstrytoputtheircubestogethertomake10,100,1000T:whoknewthecountingtheunitsof1000?S:thousand千3）tolearncountingunits“10thousand”Activity:10bigcubesaltogether.Sstrytousethepapercardtojoininthegame.T:doyo

6、uknowhowmanysmallcubeshere?S:1000,2000…T:10thousandsis10000.T:whatistheunitsof10000?万三、exerciseQ1:howmanycubesarethere?100+20+5=125Q2:xiaoming:1000+200+10+1=1211Xiaohong:1000+100+30=1130Activity：playcardsThekidsputtheircardsonadeskandhavetoaddthemtogether.四sumupWhatd

7、idyoulearn?生自我观察：联系生活找大数呈示ppt重点知识突破说出千的单位引入新知：万板书呈示：重难点突破完成巩固练习提高题目练习游戏巩固所学总结收获□板书设计Countingumbers万千百十个10个一是10。10个10是100。10个100是1000。10个1000是1000。作业设计册p22课后检查与反思学生参与课堂非常积极，能够较好的理解小题目。课题UsingabacustorecordnumbersMar，30备课方式□集体（负责人奚志芳）□个人课时分配1课时问题收集与学情分析1.thesekidsknowth

8、isknowledgewell.2.theyknow3-digitnumberswellbyusingabacus.3theyareinterestedinmaths.教学目标知识与能力目标1toknowcountingunitsunder10t