学年高中英语Module5ALessoninaLab教案2外研版必修1.docx
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学年高中英语Module5ALessoninaLab教案2外研版必修1
Module5ALessoninaLab
Period1
Introduction&VocabularyandSpeaking
Teachingaims:
1.Tointroducesomegeneralscience.
2.Tolearnsomewordsrelatedtothethemeofthismodule.
3.Todevelopspeakingabilitybypracticingsayingthenumbers,especiallythefractions.
Importantanddifficultpoints:
1.Arousethestudents’interestsandloveinscience.
2.Enablethestudentstounderstandsomeelementsaboutthechemistrylab.
3.Makethestudentsknowhowtoreadthenumbers.
Teachingprocedures:
Introduction
Activity1
Theaimoftheactivityistoaskthestudentstofinishthequizaboutgeneralsciencetoarousetheirinterestinscience.Theactivitycanbedoneasfollows:
Firstly,askthestudentstogothroughthefollowingthequizandmaketheirchoiceontheirown.
Quiz:
Howmuchdoyouknowaboutgeneralscience?
1.Waterexists__________
（a）asasolid,aliquidandagas（b）asasolidandaliquidonly
2.Whenyouheatametal,itwill___________
（a）expand（b）contract
3.Steelismixtureof_____________.
（a）ironandothersubstances.（b）ironandoxygen
4._______________oftheearth’ssurfaceiswater.
（a）Two-thirds（b）50%
5.Thedistanceofthesunfromtheearthis______________kilometers.
（a）25,500（b）150,500,500
6.Theearthis4.6______________yearsold.
（a）million（b）billion
7.Theearthis______________themoon
（a）twiceaslargeas（b）forty-ninetimeslargerthan
Thenputthestudentsinpairstocomparetheiranswersandcallbacktheanswersfromtheclass.
Finallyaskthemtolistentothetapeabouttheabovequizandchecktheiranswers.
Answers:
1.a;2.a;3.a4.a;5.b;6.b;7.b.
Activities2&3
Theteachercanpreparesomecardsaboutdifferentthingsfortheclassatfirst.Beforeshowingthestudentsthecards,theteachercansaytothewholeclass:
Thingscanbedividedintothreekinds,natural,man-made,andeithernaturalorman-made,nowI’llshowyousomecardsinmyhand,canyoutellmewhicharenatural,man-madeorboth?
Afterthis,theteachercancontinuetosaytothewholetheclass:
Canyougivesomeexamples?
Thendividethewholeclassintotwobiggroupstocompete.TheteachercanasktheSstospeakoutasmanyexamplesaspossibleandwritedownthewordsinthetableontheblackboardasfollows:
Natural
Eg:
wood,------
Man-made
Eg:
glass,------
Eithernaturalorman-made
Eg:
water,------
Finally,asktheSstoopentheirbooksatPage41andreadthewordsintheboxaloud.Ifpossible,theycanlookupthewordstoknowwhattheymean.Ofcourse,theabovecompetitionwillcontinue,thatistosay,atthismoment,theteachercanasktheSstoputthewordsintheboxonPage41intheirbooksintheabovetable.
VocabularyandSpeaking
Activity1
Theaimoftheactivityistohavethestudentsknowhowtoreadthelongnumbers.Sotheactivitycanbedonelikethis:
Beforedealingwiththeactivity,theteacherhadbetterbuildupalongnumberby
havingthestudentssayanincreasingsequence,eg:
3three
33thirty-three
333threehundredandthirty-three
3,333threethousand,threehundredandthirty-three
33,333thirty-threethousand,threehundredandthirty-three
Atthistime,mostoftheSswillknowthewayofreadingtheselongnumbers:
wheretosay“million”,“thousand”,and“hundred”.Soinordertoconsolidatewhattheyjustlearned,theteachercanpracticesayingthenumbersatthetopofPage42withthestudentstomakesuretheSshavethecorrectintonation.
ThenasktheSstogothroughtherestofthenumbersinActivity1andfindtheerrorsindividuallyaccordingtothedirections.
Finallytheteachercallsbacktheanswersfromtheclass.
Answers:
1）Theword“thousand”ismissingafter“fourhundredandseventy”;2）Theword“one”（or“a”）ismissingbefore“hundredmillion”.
Activity2
Firstly,theteacherpointatthefractionsandsaytheminEnglish.AtthesametimetheteacherhavetheSsrepeatthemafterhimorher.
ThentheteacherandtheSsmakeananalysisabouttherulesofreadingfractionsinEnglishtogether.
FinallytheteacherasktheSstoreadtherestofthefractionsinActivity2onPage42intheirbooksinEnglishontheirown.Ifnecessary,theteachercanwritedownthecorrectanswersontheblackboardtocheckwhattheyread.
Answers:
1.two-fifths;2.five-eighths;3.nine-tenths4.three-eighths;5.five-sixths.
Activity3
Theteachershouldintroducetheconceptofpercentageatfirst,andthentheteacherwritedownsomepercentagesontheblackboardandreadthemoutinEnglish.
Eg:
35%→thirty-fivepercent（or:
35percent）;50percentequalsahalf.
ThenhavetheSspracticereadingaloudthefollowingpercentages:
40%;55%;85%.
FinallyhavetheSsworkinpairstodescribethefractionsinActivity2aspercentagesinEnglish.
Answers:
1.Aquarteristhesameas25%;2.Onethirdisthesameas33.33r%（thirty-threepointthreethreerecurringpercent）;3.Four-fifthsisthesameas80%;4.Onetenthisthesameas10%;5.Three-quartersisthesameas75%;6.Onehalfisthesameas50%;7.Two-thirdsisthesameas66.66r%（sixty-sixpointsixsixrecurringpercent）;8.Two-fifthsisthesameas40%;9.Five-eighthsisthesameas62.5%（sixty-twopointfivepercent）;10.Nine-tenthsisthesameas90%;11.Three-eighthsisthesameas37.5%（thirty-sevenpointfivepercent）;12.Five-sixthsisthesameas83.33r%（eighty-threepointthreethreerecurringpercent）.
Homework:
1.Previewthereadingpart.
2.WorkinpairstofinishActivities4&5onPage43.
Periods2&3
Reading&Vocabulary
Teachingaimsanddemands:
⒈Tolearnaboutsomevocabularyandknowledgerelatedtoscienceandexperiments
⒉Toknowaboutsomemetalsandgettoknowtheirmainusesinourlives
⒊TomakethestudentsknowhowtodoasimpleexperimentandwritethereportaboutitinEnglish
⒋Todealwithalltheactivities1-6aboutpassageAandpassageBonpage44-45
⒌Todevelopstudents’expressionabilityaswellasreadingabilitybypracticingthesetwopassages
⒍Toraisestudents’interestsinscienceandformtherigorousscientificattitude.
Teachingkeypoints:
⒈Tomakethestudentsunderstandandgraspthevocabularyandknowledgerelatedtoscienceandexperiments
⒉Toenablethestudentstoknowhowtoreadsomepassagesaboutsimplescientificexperiments
Teachingdifficulties:
TomakestudentslearnhowtowriteanexperimentreportinEnglish
Teachingmethods:
⒈CommunicativeApproach
⒉Task-basedApproach
⒊Aural-oralApproachwiththehelpofthemulti-mediacomputerandtherecorder
Teachingaids:
Multi-mediacomputer;Software;PowerPoint;Recorder
Teachingprocedures:
Step1:
Lead-in
Atfirstshowthestudentsthepictureofalabwiththehelpofcomputer
Thendesignthefollowingquestionsandaskthestudentstodiscussthemingroups:
1.Areyouinterestedindoingscientificexperiments?
2.Supposeyouwanttodoachemicalexperimentaboutsomemetals,doyouthinkitisnecessarytoknowabouthowtheyreactwithothersubstances?
3.Inordertocarryoutanexperimentsuccessfully,whatshouldyouprepareforit?
ThisstepistowarmupthestudentsandraisetheirintereststospeakEnglishinclass.Becauseallthesequestionsareveryclosetothestudents’dailylifeandstudying
Step2：
Pre-reading
Teacher:
Sinceyouareinterestedindoingscientificexperiments,nowlet’sgettoknowsomevocabularyandknowledgerelatedtoscienceandexperiments.
AtthesametimeIcantypeoutsomepicturesaboutsomemetalsonthescreenwiththehelpofthecomputerasfollows:
⑴potassium（钾）⑵sodium（钠）⑶calcium（钙）⑷magnesium（镁）
⑸aluminium（铝）⑹zinc（锌）⑺iron（铁）⑻copper（铜）
AsItypeouteachoftheabovepictures,Icanaskthestudentslikethis:
What’sthis?
Andwhatcanitbeusedfor?
Atthismomentthestudents’interestsareprobablyapproachingaclimax.SoIfurtheraskthemlikethis:
Doyouwanttoknowmoreaboutthesemetals?
Anddoyouknowhowwecanusethesemetalsbetter?
Well,thisiswhatwe’llstudyverysoon.
Thisstepisemployedtocreatealanguageenvironmentforstudents’communicationandarousetheirinterestsinreadingpassageAandpassageBonpage44-45
Step3:
Reading
PassageA
T:
Well,let’sreadthroughpassageAwiththetapeofitveryquicklytotrytocatchitsmainidea.ThenfinishActivity2onpage44andgiveyourreasons.
Next,asktheSstoreadpassageAverycarefullytofindouttheanswersinActivity3onpage44.Finishthisactivitybymulti-mediacomputer.Itcanbedesignedasfollows:
1.Whichofthemetalsinthetablereactsthemostwithoxygenandwater?
Potassium,calciumandsodium.
2.Whathappenswhenyouheatcalciuminoxygen?
Itburnstoformanoxide.
3.Whichmetalsreactwithsteam?
Magnesium,aluminiumandzinc.
4.Doesironhaveasloworfastreactionwithsteam?
Ithasaslowreaction.
5.Doescopperreactwithwater?
No,itdoesn’t.
PassageB
T:
Well,frompassageAwecanseehowinterestingtheexperimentaboutthereactionofmetalsis!
Butdoyouknowhowwecancarryoutachemicalexperimentinalabsuccessfully?
Andwhatisthecorrectordertodescribeascientificexperiment?
AsktheSstolookatActivity1onpage44andgivethemabout2minutestodiscussit.Thencollecttheanswersfromthem.Atthesametimetypeoutthecorrectansweronthescreenwiththecomputerasfollows:
aim
conclusion
result
method
T:
Now,let’scometosee“Asimplescientificexperiment”!
ThenplaythetapeofpassageBforthestudentsandaskthemtoreadthepassagewiththetapequicklyandfinishActivity4onpage44.
Inordertolea
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