2022年北师大版最新小学数学四年级上册第四单元《买文具》教学设计.docx

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1、精选学习资料 - - - - - - - - - promotion of empl oyment, form a rea resour ces asset property right system asonable a nd orderly nd use control, red lipattern of i ncome distri ne of delimitation of ebuti on, col ogical bui ld a more fair a nd sustai protecti on, re sources paid nable social se use system

2、 acurit nd ecoy systems, medi l ogical compensatical and health system reform. T on sy stem in ecologi cal envirhe pl enar y, innovati on of soci al governance, must focus on the mainte onme nt prote ction management sy stem reform. Plenary session, cenance ntering on of fundame ntal interest s of t

3、he b uilding a liste ning party commaoverwhelming majority of the nd, can wi n and havi people, maximize fact ng a fine style of the pet ors, e nha nce social development, impr ople s army, a strong army under the new sitoving soci al governance, the i uation of the party Goali nterests of national

4、se curit s, restricti ng the development of nati t y, e nsure t i onat hat the people live a l defense and army builnd w ork, soci al stabil ity and ding i s solve d outstanding orde contrar. dictions ao improve social gover nd problems, i nnovatinance, stimulati ng social organizati on and developm

5、ent of military theon, innovative and effective system of preventing ory, enhance milit ary strategic guidag nce, improve tand resolvi ng social conflicts, impr oving t he publi c security system, set up the he military strategy in the new period, building a modern military force system with Nationa

6、l Security Council Chi nese chara, national security systems and nati cteristics. o dee pen tti onal he adjustment of se curity strategy to e nsur e national security. personnel system reform in the army, military Plenary polisessi on, the construction of ecologi cal civ ilization, you must esta cy

7、and system reform, prom ote the development of military and civita blish systems of ecol ogical system, using the system to lian integration de pth. Plen ary session stresseprotect t he ecologi cal environme d that compre hensive reform must be to nt. strengthen ao improve natural nd impr ove thepar

8、tys leadershi p, give full play to the core r r ole of the party commands the overall situation and coordinating all parties, impr pr oving the partys leading water . Margin. Challenged the leadership of the Communist Party of China, Marxism-Leninism and Mao Zedong thought by Deng Xiao-pi ngs fla a

9、g, replace d by three representatives and the harmonic society. The former Communist Party spirit and social cohesion poi nt of almost all political makeover. Chara cteristics of socialism public ow nership is shifting to private ownership, planned regulation and market regulation, the pr oletarian

10、regime controlled by the elite. Of universal equality, fairness and basic principles of distribution system is socialist society, however after economic monopolized by powerful, vested interests growemployers do not have t t he same status, hardly seems fair social distribution. State key protection

11、 of capital interests rather than the interests of citizens, had been hits the bottom of the proletariat 买文具教学设计一 、 教 材 分 析本课选自北师大版小学四年级上册第三单元“ 买文具” 一课，是在学生已经初步了 解了小括号的意义，会用小括号进行计算的基础上进行教学的。教材首先通过创设“ 买文具” 这个与生活密切相连的具体情境，让学生从情境图中获取有用的数学信息，再让学生有选择地解决有关问题，在解决具体问题的过程中感受和体验四则运算的运算顺序；然后让学生回忆含有小括号的试题的运算顺序，

12、在此基础上去思考如何让“9 3 52=1” 这个等式成立的问题，自然引入中括号；最后，在认识中括号的写法和用法后，师生共同交流归纳四则混合运算的运算顺序。二 、 学 情 分 析四年级学生， 已经学过了带有小括号的混合运算的运算顺序，新课改也指出要放手让学生去独立探索、大胆交流，让学生在热烈、主动和富有个性的课堂氛围中完成新知的学习。但要注意及时发现学生可能或易出现错误的地方进行及时的纠正，以帮助学生养成良好 的计算习惯，提高计算能力。二 、 课 时 目 标1、在解决实际问题的过程中，回忆和巩固含有小括号的算式的运算顺序。2、在具体的问题情境中懂得引入中括号的必要性，理解并掌握含有中括号的混合运

13、算的运算顺序。3、能熟练进行简单的整数四则混合运算，并能解决生活中的实际问题。4、在计算中增强学生用多种策略解决问题的意识，培养学生观察、比较及发散思维的 能力。三 、 重 点 难 点理解并掌握含有中括号的混合运算的运算顺序 熟练进行简单的整数四则混合运算四、 教 学 方 法教法：情境教学法 练习法 学法：自主、合作、探究的学习方式五、 教 具 与 学 具多媒体课件练习本练习册六、教学过程（ 一 ） 引 导 谈 话 ， 导 入 新 课名师归纳总结 师：我们学习了有关乘法的计算、神奇的计算工具和一些有趣的算式，发现数学n 第 1 页，共 4 页Obviously, face Chi nas So

14、cialist system, the Communi i st Party is not the party. In that case, politi i cal chaos has bee n very tight. Is remodeling or reconstructi on, is a correction or a stove. Whether to tur n right or left, is back to the source or put forward new political i deas. This is to determine the road pr r

15、obl ems in China, is al al so the key out of the deep water of the reform of the economic system. After 18, the new Central collective leadership attaches great importance to political orie ntation. First, the Central eight arti rti cles as a starting point, starting from the Central Governments sel

16、f-re straint, which preaches and pro-image, br r oug ht fresh feeling to t o t he community. Secondly, before reform and opening up and reform and opening two periods after non-negative, untying the tangle of the society a long time on this issue. Third, a new generation of party leaders on various

17、s occasions to Mao Ze -Dong and Mao Ze-Dongs thoug g ht of evaluation has room for manoeuvre, throug h to the r uling idevelopment. Signs show that t Comrades: today brings t deol ogy of Ma o t t he new l t ogether memberZedong though eadership s, mainly in t, i s the call of the soul t o the S ocia

18、list Revol n began t o make a left turn in politics. order to provi de a platform to Exchange al ution and construction. Empty talkHowever, as of right now, not only ide nd lear n from each other i n order ts jeopardize national interest s and try again, is a n affirmation of De ng Xia o-pingologi c

19、al confusi on i n the community, the new lea derships t hinki ng is messy. Ne o facilitate our work. Just now, we focus on taxation, pla nni ng and stabilit y, safety, s reform i deas. These strow leader s bot h stresse d the need t , proje ct constr uction, typi cal topics ng politica o implement t

20、 s such as l signal showing t he Constituti s private facts prese a new ge neration of polieon, stresse d the need t ntation and interactitical leaders is still keeping to to turn off the power i n a cage. Al on, and towns currently exist in the inhe Socialist roa d. Four is revisiting t l so stre s

21、ses that Mao Zedong t hought ca -de pth a nalysis of the problems to t he talking to Ma o Ze-Dongs hi stoa nnot be lost, 30 years after the reform and openi be solved, to ex plore new methods trical cycle o solve tof high profile anti-cng up 30 years ago he pr oblem. It can be saiorrupti on a nd t h

22、e ican not deny each ot d that summing umporta nce of the Constit ution, reorga her. Bot h advocate dem ocracy a p t he achievement, no grandstanding ga nization isnd rele ase seve g ; analy sis ba d style of official e n does not speak al dom, wa s to of files of politi civ ilize people obti cal co

23、nstraintey the s. Nla w eit her de, w hile im ny the pr oving the col history of the ol or change of the regime of vigila nce. Five is to reform into dee per waters a nd stressed t hat top-level design, this i s a review on the reform and openi ng up in t he past, i s also look ing for a way out. Si

24、x foreign and Russia cl oser, the flexibl e attitude on the issue of the CPC Central Committee on several issues . Korean peninsula , Sino-Japanese fishi i ng hardline China on the island out of the patient and l ow profile shadow began to gradually pla- - - - - - -精选学习资料 - - - - - - - - - promotion

25、 of empl oyment, form a rea resour ces asset property right system asonable a nd orderly nd use control, red lipattern of i ncome distri ne of delimitation of ebuti on, col ogical bui ld a more fair a nd sustai protecti on, re sources paid nable social se use system acurit nd ecoy systems, medi l og

26、ical compensatical and health system reform. T on sy stem in ecologi cal envirhe pl enar y, innovati on of soci onme nt prote ction management syal governance, must focus on the mainte stem reform. Plenary sessi on, cenance of fundame ntering on building a listental interest s of the ning party comm

27、aoverwhelming majority of the nd, can wi n and havi people, maximize fact ng a fine style of the pet ors, e nha nce ople s army, a strong social development, impr army under the new sitoving soci al governance, the i uation of the party Goali nterests of national se curit s, restricti ng the develop

28、ment of nati t y, e nsure t i onat hat the people live a l defense and army builnd w ork, soci al stabil ity and ding i s solve d outstanding orde contrar. dictions ao improve social gover nd problems, i nnovatinance, stimulati ng social organizati on and development of military theon, innovative an

29、d effective system of preventing ory, enhance milit ary strategic guidag nce, improv e and resolvi ng social conflicts, impr oving t he publi c security system, set up the t he military strategy in the new period, building a modern military force system with National Security Council Chi nese chara,

30、 national security systems and nati cteristics. o dee pen tti onal he adjustment of se curity strategy to e nsur e national security. personnel system reform in the army, military Plenary polisessi on, the construction of cy and system reform, prom ecologi cal civ ilization, you must esta ote the de

31、velopment of military and ta blish systems of ecol ogical system, using the system to civi lian integration de pth. Plenary session stresseprotect t he ecologi cal environm d that compre hensive reform must be to nt. strengthen ao improve natural nd impr ove thepartys leadershi p, give full play to

32、the core r r ole of the party commands the overall situation and coordinating all parties, impr pr oving the partys leading water . Margin. Challenged the leadership of the Communist Party of China, Marxism -Leni nism and Mao Zedong thought by Deng Xiao-pi ngs fla a g, replace d by three representat

33、ives and the harmonic society. The former Communist Party spirit and social cohesion poi nt of almost all political makeover. Chara cteristics of socialism public ow nership is shifting to private ownership, planned regulation and market regulation, the pr oletarian regime controlled by the elite. O

34、f universal equality, fairness and basic principles of distribution system is socialist society, however after economic monopolized by powerful, vested interests grow employers do not have t t he same status, hardly seems fair social distribution. State key protection of capital interests rather tha

35、n the interests of citizens, had been hits the bottom of the proletariat 世界真是奇妙无比。其实在数学计算中，还有许多运算规律，你们想去研究、学习吗？师引入新课：从这节课开始，我们就来探索和学习一些有关数学计算的规律。（板书课题：买文具）（二） 互 动 新 授 ， 探 索 新 知1、创设情境，交流算法。（1）课件出示教材第 47 页情境图。让学生仔细观察情境图，在小组内交流自己从图中获取的数学信息。指名汇报，师根据生答进行梳理（课件呈现）：1 从图中可以知道计算器、铅笔盒、圆珠笔、足球的单价。2 从图中还可以知道每盒钢笔的

36、价钱和每副羽毛球拍的价格。（2）课件出示问题：买3 个计算器和一支钢笔要多少元？让学生独立尝试解答，教师巡视检查。教师根据巡视，有选择地选取用分步方法和综合方法计算的两名学生进行汇报，师根据生答进行板书。分步算式：22 3=66（元）24 4=6（元）666=72（元）。综合算式：22 3+24 4 =66+244 =66+6 =72（元）（3）质疑：这个综合算式既含有乘法，也含有加法和除法，这位同学算得正确 吗？学生在小组内讨论交流计算顺序。指名汇报交流结果，师根据生答进行点拨（板书）里，要先算乘除，后算加减。：在既有加减又有乘除的算式（4）刚才这位同学的计算正确吗？还可以怎样计算？指名汇报

37、，师根据生答进行小结：名师归纳总结 Obviousl througy, face Chi nas Socialist syh to the r uling ideology ofstem, the Communi Ma o Zedong thought, i st Party is not the i s the call of the soul tparty. tIn that o the S case, politi ocialist Revoi cal chaos hal ution and constr s bee n very tight. Is remodeling tr ucti

38、on. Empty talks jeopardize or reconstr ze national ucti on, i interests a correction or a s and try again, is a stove. s a n affirWhet mation of Dher to tur n e ng Xright iaor left, is ba o-pings reform i ck to the source i deas. or put forward These strong politica new political i ca l signal i dea

39、s. showing a This is to determine the r new ge neration of poli r oad pr tical leader s r obl ems in China, is al s is still kee ping to tal so the key out he Socialist roaof the de d. Foep water Four is revisiting t of the reform of the e t he talking to Ma conomic sy Ma o Ze-Dongstem s hi. storica

40、l After 18, the new Ce cycle of high pre ntral coll eofile anti-corrupti ective lea i on adership attaches great importance to nd the importa nce of the Constitution, reorgapoliti gacal orie ntation. nization is ba . First, the Central eight artia d style of official dom, wa s to civcles as a starti

41、 ilize people obey the la ng point, starti la w , w hile impr ng from the Ce pr oving the col ntral Governme l or change of the rents self -re straint, whi gime of vigila nce. ch prea ches a Five isnd pro-image, br to reform into deeoug ht fresh feeling to t per waters ao t he communit y.nd stressed

42、 t hat top-level Secondly, design, this iy, before reform and openis a review on the reform and opening up and reform and openi ng up in t he past, ing two s also lookperiods after non ing for a way out. -negative, untyi Six forng the tangl eign and Russia e of the soci cl oser, tety a long time on

43、t he flexibl e attitude his issue. Third, a ne on the issue of the w generation of part Korea n peninsula, Siny leaders on various o-Japane se fishioccasions to ng hardli ne China Mao Ze -Dong a on the island outnd Ma of the pao Ze tie-Dongs thoug nt and lht of evaluati ow pr ofile shaon has room fo

44、r manoe dow bega n to graduauvre, lly plan 第 2 页，共 4 页development. Signs show that t Comrades: today brings t t t he new l t ogether membereadership s, mainly in began t o make a left turn in politics. order to provi de a platform to Exchange aHowever, as of right now, not only ide nd lear n from ea

45、ch other i n order tologi cal confusi on i n the community, the new lea derships t hinki ng is messy. Ne o facilitate our work. Just now, we focus on taxation, pla nni ng and stabilit y, safety, w leader s bot h stresse d the need t , proje ct constr uction, typi cal topics o implement t he Constituti such as private facts preseon, stresse d the need t ntation and inter actio turn off the power i n a cage. Al on, and t