學必求其心得，業(yè)必貴于專精學必求其心得，業(yè)必貴于專精學必求其心得，業(yè)必貴于專精教學設計Revision：SummingUpandLearningTip整體設計教材分析Thisisthelastteachingperiodofthisunit，sotheemphasisshouldbeplacedongoingoverandsummarizingwhathasbeenlearnedinthisunit.Itincludesthefollowingparts：SummingUp，LearningTip，assessmentandconsolidationexercises。SummingUpsummarizesthewholecontentsofthisunitfromtheaspectsoftopics,vocabularyandgrammar。Theteachercanfirstusethisparttoletstudentssumupwhattheyhavelearnedandthenexplainwhatstudentscouldn'tunderstandverywellinthisunit.Anexperiencedteachershoulddesignsomeadditionalexercisesforstudentstodoinorderthattheycanlearntouseandgraspallthecontents。LearningTiptellsstudentsthatastronomyisascientificsubjectmadeupofmathematicsandphysics。EncouragethemtousethescientificmethodwhenstudyingEnglish。Theycanstudycarefullyhownewwordsandstructuresareused，trytomakeasimpleruleintheirownwordstoexplainhowandwhenanewwordorstructureisused,testtheirtheorybyusingthewordsorstructuresinnewsituationsandaskpeopletotellthemiftheyareusingthemcorrectly。Thentheywillknowiftheirtheoryiscorrect。ThisisagoodwayoflearningEnglish.Somakesurethatstudentshaveatry.Inthisperiod，theteachercanalsoprovidemorepracticestoconsolidatewhatstudentshavelearnedinthisunit。Finally，askstudentstofinishCheckingYourselfonPage68intheWorkbook.Thispartaimsatencouragingstudentstomakeaself-assessmentaftertheyfinishlearningthisunit.Itisveryimportanttoimprovetheirlearning。Ofcourse,atestingassessmentisalsoneeded。教學重點1．Getstudentstoreviewandconsolidatewhattheyhavelearnedinthisunit。2．Developstudents'abilitytosolveproblems。教學難點Getstudentstoturnwhattheyhavelearnedintotheirabilities。三維目標知識目標1．Getstudentstogoovertheusefulnewwordsandexpressionsinthisunit.2．Havestudentsreviewthenewgrammaritem：nounclausesasthesubject。能力目標1．Developstudents'abilitytousetheimportantlanguagepointsinthisunit。2．Enablestudentstolearntousenounclausesasthesubjectcorrectly。情感目標1．Encouragestudentstolearnmoreaboutastronomy。2．Stimulatestudents’loveofscience。3．Strengthenstudents'senseofgroupcooperation。教學過程Step1Revision1．Checkthehomeworkexercises.2．Dictatesomeusefulnewwordsandexpressionsinthisunit。Step2Lead。inTellstudents：Uptonow，wehavefinishedUnit4Astronomy：thescienceofthestars。Haveyoulearnedandgraspedallinthisunit？TurntoPage32。YoucancheckyourselfbyfillingintheblanksinthepartSummingUp。Step3SummingUpFiveminutesforstudentstosummarizewhattheyhavelearnedinthisunitbythemselves.Thencheckandexplainsomethingwherenecessary.Suggestedanswers：Writedownwhatyouhavelearnedaboutthedevelopmentoftheearthandmakingaspacetrip。（Students’_answer_may_vary.)We_have_learned_about_science_of_the_stars，the_development_of_life_and_space_travel_and_gravity。Fromthisunityouhavealsolearnedusefulverbs：multiply，exist,puzzle，crash，pull，floatusefulnouns：astronomy，system,religion，theory,atom，billion，globe，carbon，atmosphere，acid，chain，oxygen，dioxide，puzzle，biology，biologist，gravity，satellite，physicist，climate，spaceship，float，massusefuladjectivesandadverbs：billion，violent，fundamental,harmful，gentle，thusotherexpressions：solar_system，in_time，in_one's_turn,carbon_dioxide，now_thatanewgrammaritem：noun_clauses_as_the_subjectStep4PracticeShowtheexercisesonthescreenorgiveoutexercisepapers.Firstletstudentsdotheexercises.Thentheanswersaregiven。Theteachercangivethemexplanationswherenecessary。Ⅰ．Wordspelling1．Theoldadministrations______isundergreaterandgreaterchallenge.2．Almosteverycountryhassomeformofr______。3．Onet______aboutthemoonisthatitisapiecebrokenofftheearth.4．Notafewv______sceneswerecutfromthefilmbeforeitcametoshow。5．Theearthhasana______whichallowsustobreathetheair.6．Sheisu______hermother;sheistallandhermotherisveryshort.7．Freshairisf______togoodhealth。8．Whenanimalshavemorefood，theygenerallym______faster.9．TheRomanEmpiree______forseveralcenturies.10．It'sap______whereallmymoneygoeseachweek.Ⅱ．Fillintheblankswiththeexpressionsgivenbelow。Useeachexpressiononlyonceandmakechangeswherenecessary。intimegivebirthtoinone'sturnprevent…fromcheerupnowthatbreakoutwatchout1．Over500peoplewereworkinginthebuildingwhenabigfire______onthethirdfloor.2．Afewpictures______thisroom______abit。3．Iintendedtocatchtheearlytrain，butIdidn'tgetup______.4．Whatcanwedoto______thedisease______spreading？5．______youaregrown。up,youshouldnotrelyonyourparentsanymore。6．Thestaffwereaskedto______forforgedbanknotes。7．Mary______ahealthybabylastnight，whichmakesherfamilyveryhappy。8．They，______，enteredthehallandseatedthemselvesattheback.Ⅲ．Fillintheblankswithproperconjunctives.1．______AliceshouldhavemarriedTomisnotatallsurprising.2．______causedthefireisstillamystery。3．______shecomesornotdoesn'tconcernme.4．______thebookwillselldependsontheauthor。5．______heleftsosuddenlyisnotknowntousall.Keysforreference：Ⅰ．1．system2．religion3．theory4．violent5．a(chǎn)tmosphere6．unlike7．fundamental8．multiply9．existed10．puzzleⅡ．1．brokeout2．cheered；up3．intime4．prevent；from5．Nowthat6．watchout7．gavebirthto8．intheirturnⅢ．1．That2．What3．Whether4．How5．WhyStep5LearningTipAskstudentstoturntoPage32.Readthroughthepassageandmakesuretheyunderstandit.Encouragethemtodoasthepassagetellsthemtobecauseiftheyaredoingsotheywillbeteachingthemselvesausefulwayoflearningandformagoodhabit.Step6Assessment1．CheckingYourself（onPage68intheWorkbook）Firstgetstudentstothinkaboutthesequestionsindividually.Thentheycandiscussingroupssharingtheirexperience.Theteachercanjoininandgivethemadviceandsuggestionswherenecessary。2．Fillintheform。Afterlearningthisunit,I'mabletodothefollowingthings…VerywellWellOnlywiththehelpofothersIneedtoworkharder。1．Givingabriefintroductiontothebeginningoftheearthinmyownwords.2．DescribinghowthegravitywillchangeifIleaveforthemoonforaspaceship。3．Givingabriefintroductiontothe“blackhole”theory。4．Usingthenewwordsandexpressionsofthisunitinspeakingandwriting。5．Usingtheexpressionsofgivinginstructionsinspeaking.6．Usingthenounclausesasthesubjectcorrectlyinspeakingandwriting。Step7Homework1．FinishofftheWorkbookexercises.2．ReviewandsummarizewhatyouhavelearnedinUnit4。備課資料FurtherreadingTheMysteryofWhenLifeBeganScientistsarestilltryingtounraveloneofthegreatestmysteriesofearth：Whendid“l(fā)ife”firstappearandhowdidithappen？Itisestimatedthatthefirstlifeformsontheearthwereprimitive,one。celledcreaturesthatappearedabout3billionyearsago.That’sprettymuchalltherewasforaboutthenexttwobillionyears。Thenanunprecedentedprofusionoflifeinincrediblycomplexformsbegantofilltheoceans。Somecrawledfromtheseasandtookresidenceonland，perhapstoescapepredatorsintheocean.Acascadingcha