2022年2022年《数字编码的奥秘》教学设计与评析

1、精选学习资料 - - - 欢迎下载数字编码的秘密 教学设计与评析（teachingdesignand analysisof mystery of digital coding）teaching contents: teaching on unit seventh "version of the fifth grade second class maths".teaching target:1、through thestudentto eachkindofcode collection and the arrangement in the life、 understood e

2、ach kind of code、understood the id card code related knowledge and the general rule、 obtains the preliminary digital coding method.2、 in the process of solving the problem、 we should train students' ability to abstract、 generalize and collect information、 process information、 and try to solve th

3、e coding problems in life by using the relevant laws.3、 the process of exploration、 forming an active interest in mathematics learning activities、 forming a sense of cooperative learning.teaching emphasis: preliminary understanding of mathematical thinking of digital coding.teaching difficulties: th

4、rough observation、 comparison、 speculation、 explore the general rules of digital coding.teaching preparation:multimediacourseware、learningcard、id card number before class.精品学习资料精选学习资料 - - - 欢迎下载teaching process:first、 the creation of context、 introduce interestteacher: do you like watching tv、 class

5、. what do you like to watch.student1:ilikethe"bigwindmill"program ofcctvchildren's channel most.student 2: i love to see the animal world. student 3: i like watching cartoons best.teacher:theteacherbringsa program foreveryone.do you want to see it.student: i want to see it.teacher: wat

6、ch the big screen、 and play the lucky 52 lottery. t: hey、 what's this program.student: this is li yong's lucky 52". teacher: do you like this program. student: i like it.teacher:theteacheralsolove、ialsoadmirethehostliyong、 he is not only the host language is humorous、 liberal and精品学习资料精

7、选学习资料 - - - 欢迎下载dignified、 more amazing is that he can according to the id number quickly say lucky audience's personal information. do you know why. it seems that there are many mysteries in the id card ment: teachers make full use of the students loved the tvshow thecreationofcontext

8、、toguidestudentsby watchingthe show questioned、 contains personal identity information idnumber in the initial perception、 arouse the students' thirstfor knowledge、for the nextstep tofindand solveproblemsas well.two、 independent cooperation、 explore new knowledge 1、 the initial experience of the

9、 law of digital coding.(1) explore the general law of identity card codingteacher: how do you form your id number. what information canyou obtainfromyourid cardnumber. below、pleaseask students to come up with identity cards collected information、 firstpacket communication、 careful observation、 compa

10、rison、speculation、explorethe generalrulesofidentitycardcoding、 and then report to each group leader. which group rules best.(2) the team leader presides over the group activities.(3) refer to 2 - 3 delegates、 report and draw a conclusion.student 1: i found my mother's identity card number 197205

11、31 in the middle、 these figures happen to be her date of birth.精品学习资料精选学习资料 - - - 欢迎下载sheng 2:wefoundthe samegroup ofidentitycards、somenumbers are the same.3: we also found that the second digit to the last group of singular men、 women even said.t:you'vefoundso muchinformationaboutyourid number.

12、 it's really something. what other questions do you have.(4) division: identity card number in the end what are the mysteries. let's see it together: courseware shows one's id number2. reveal the coding rules of id number.(1) a residentidentitycardismadeup of18 digits.the first two numbe

13、rs representtheprovinces.for example、42 represents hubei、 and 34 represents anhui.(2) the two figures on the third、 fourth place indicate thelocationand cityoftheresidence.if01 representswuhan、 02 represents huangshi.(3) the two digits on the fifth、 sixth digit indicate the county district. 06、 for

14、example、 wuchangdistrict of wuhan、 07 for castle peak district if the 1 - 6 bits are combined、 theadministrativedivisioncode isindicated、whichisfromwhich province、 city、 district and county.(4) the number from seventh to fourteenth indicates the birth精品学习资料精选学习资料 - - - 欢迎下载date、month and day ofa per

15、son、which iscalledthebirthdate code.think about it:t: why not use "6" instead of "06" in june.student: the month and date are made up of two digits、 so they are represented by two digits.(5) what does thefifteenthtoeighteenthstandfor.let'shear the introduction of the police u

16、ncle.courseware introduces the origin of sequence code and check code:year、 month、 day after the 3 number is the order code、 by the ministry of public security organs using computer to everyperson bornaccording toa certainorder、ifitis assignedtothe singular row to the men、 even assigned to women.the

17、 eighteenth bit is the check code、 that is、 personalinformationcode、usuallyby thecomputerbeforethe17 figures arecalculatedby a formula、used toverifythevalidityofthe identity card、 and sometimes expressed in x.(6) division: showing your id number this is the teacher's id number. what personal inf

18、ormation can you get from the teacher according to it.3、 talk about the role of identity cards.精品学习资料精选学习资料 - - - 欢迎下载t:what partofyourlifedo you need touse a residentid card. student 1: id card to fly.sheng 2:tothebank fordeposit、withdrawalsrequiredid card. health 3: housing to use id card.student

19、4: go abroad to use id ment: in a relaxed、 pleasant atmosphere of inquiry、studentswilllearntocollectinformationand by thehands of the identity card number of the observation、 comparison、speculation、 feeling a 18 digit id number contains personal details. in this aspect、 students realize the

20、joy of cooperation with others through cooperative learning、 thus promoting the improvement and development of students' individual and whole. three、 exercise feedback、 show potential1 division: the role of id card is really big. in fact、 eachcitizenisbornwithan identitycardnumber、 whichiscompil

21、ed by the public security organ in accordance with the nationalstandard of citizenship number. guess what is youradministrative code and birth date number in your id number.what aboutsequentialcodes and check codes. howdo you express these indefinite numbers.give a summaryofthe presentation:availabl

22、elettersindicate.精品学习资料精选学习资料 - - - 欢迎下载2.please takeoutyourhomeworkpaper and writeyourid number.referto2 studentsreport、divisionfieldinputnumber、 said: "how do you weave." why do you make that up.3 games: lucky draw.teacher:thestudentsbehaved so wellthattheteacherdecided to reward everyon

23、e. let's play a lucky draw game.look at the rules of the game.courseware demo. game two awards: if the card out of the same number and id number、 can getluckyprize;thebasicsituation can say exactly according to the winning person out of thenumber to obtain wisdom award.the students call "st

24、art" or "stop"、 and the computer willoperateaccordingtoyourinstructions.attention、please.the winningnumber isinyourhands.watch yourid number carefullyto see who can be our lucky little ment: teachers carefully created to write your own id number、 and combining the students

25、 number arrangement sweepstakes、 let the students hands-on、 effectively explore the encoding method of the identity card number、 expandstudents'thinking、realizetheoptimizationand extractionof digital encoding、 cultivating students' practical ability. four、 practice and expand精品学习资料精选学习资料 - -

26、 - 欢迎下载1、 division: students、 with our lives into the digital information age、 digital coding has gradually been the focusofattention.inthisclass、we taketheid number as an exampleto discuss the mystery of digital coding. sticker topic: the mystery of digital coding where else have you seen examples

27、of digital coding. for example、 courseware play small data: mathematics in life.2 division: digital coding can also serve our learning. in order to facilitate management、 the school decided to designa studentnumber foreach student.the teacherwants toinvite everybodytobe "thesmallschoolstatusman

28、ager"、forour class schoolmate makes the student number、 you want. what kind of information do students need to reflect. please open yourtextbook page 115、 and example 3 will give you some enlightenment.3、 refers to 1 - 2 students report、 with students answer courseware demonstration、 design a s

29、tudent number scheme.courseware demonstration:a. school code is prescribed by the administrative department of education. according to the teacher's investigation、 the code of our school is 42.b. year of enrollment: 2002.c. class: for example、 03.精品学习资料精选学习资料 - - - 欢迎下载d. serial number: 01.e. ge

30、nder: for example、 1 for boys、 2 for girls.4、 each team under the leadership of the group、 to the group students number.5、demo registrationnumber ofstudents 1 -2、said: wewill give the class number of students、 in accordance with thismethod、 can the school students for students. ok、 let's go to t

31、he dean's office after ment the essence of knowledge is activity. to enable students to acquire knowledge、 develop skills、 it is very important to scientific and rational design of various forms of practice、 writing、 this practice conforms to the cognitivecharacteristicsofstudents、stude

32、ntwritingthroughthinking、 writing program、 display on practice will learn to a climax、not only further deepen students' understanding of digitalencoding、 and the development of students' thinking、 effectively stimulate the students' interest in learning mathematics. five、 sum up、 talk ab

33、out feelings1、 division summary: students、 happy 40 minutes to end、 this lesson、 what is your greatest achievement.the students talked about the feeling after class.teacher: digital coding can concisely and accurately express精品学习资料精选学习资料 - - - 欢迎下载all kinds of information of things and provide many

34、conveniences for our life. therefore、 the application of digital coding is more and more widespread、 and now it has developed into high technology and national defense、ifyou are interested inthesemagicalcoding、 youmay as well be a conscientiousperson、use youreyes toobservecarefully、 use yourmind tot

35、hinkcarefully、and believethatyou willfind more mathematical mysteries.2 division:students、you know.in2021、 inbeijing、the capital ofourcountry、therewas a bigeventthatattractedworldwide attention、thatis、the2021 olympicgames、 thesuccessofthe olympicbid、so thateverychinese peopleareproudof it、let us fee

36、l the exciting moment again. courseware.teacher:what can we do withtheknowledge we have learnedtoday for the olympic games.show your online collection and read it by name. collection inspirationin order to meet the unprecedented 2021 olympic games、especiallyextensivecollectionofolympicathletesnumber

37、ing scheme、 welcome to the community give counsel.2021 organizing committee of the olympic games3 division:what shouldbe reflectedinthenumber ofplayers. students boldly imagine、 talk about their coding ideas. after精品学习资料精选学习资料 - - - 欢迎下载class、studentscan alsofindrelevantinformationby reading、 surfin

38、g the internet and other ways、 so that your program ismore scientific and ment: thismath classwasover、but thestudentsdidn'tstop thinking、teachleftfurtherthinkingspace forstudentsinthe end oftheclass、leadthem intothelifeoftheclassroom、let the students from the new generation of math

39、ematics problems:the olympic athletes so much、 they comefrom all over the world、 howscientific and reasonable for their number.this is not only the distillation and distillation of learning in this lesson、butalsoeffectivelyraisesthestudents'awareness ofproblems and the consciousness of independe

40、nt inquiry. summary: in the classroom teaching、 to implement the new curriculumstandards advocatedtheeffective wayoflearning: practice and self study and cooperation and communication. asa teacher、 first of all、 we should fully respect the subject status of students、 and give full play to the studen

41、ts' subjectivity、 so that students' mathematics learning is alively、activeand fullofpersonalityprocess.at thesametime、 teachers in this class delve into the teaching materials、creative use of teaching materials、 and pay attention to creating a lively classroom atmosphere、 so that students ca

42、nalways maintaina highdegree oflearningenthusiasm.there are three characteristics of this class that deserve yourattention.1、 create a living situation、 stimulate students' interest in learning.精品学习资料精选学习资料 - - - 欢迎下载the new curriculumphilosophyemphasizes:"mathematicsshould be based on the existing experience of students、 and let thestudents experience and abstract the actual problems into mathematical models for interpretation and application."."mathematicsshouldfullydemonstrateitsconnectionwithhuman life、