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1、Unit10Whenwasitinvented？TheFourthPeriodⅠ．TeachingAimsandDemands1．KnowledgeObjects(1)KeyVocabularysweet,salty,crispy,sour,potato,chip,mistake,bymistake.thin,intheend,chef,sprinkle(2)TargetLanguageDidyouknowpotatochipswereinventedbymistake?No,Ididn'tknowthat.Whoinventedthem?2．Abil
2、ityObjects(1)Trainthestudents'reading,writing,speakingandlisteningskillswiththetargetlanguage.(2)Trainthestudentstousethenewvocabulary.3．MoralObjectsDoyouenjoyeatingthepotatochips?Haveyoueverthoughtofthehistoryofthechips?Ⅱ．TeachingKeyPoints1．Trainthestudents'reading,writing,spea
3、kingandlisteningskillswiththetargetlanguage.2．Teachthestudentstousethenewvocabularycorrectly.Ⅲ．TeachingDifficultPointsDothelisteningpractice.Ⅳ．TeachingMethods1．Listening2．PairworkⅤ．TeachingAids1．Ataperecorder2．Somebagsofpotatochips.Ⅵ．TeachingProceduresStepⅠRevision1．Checkthehome
4、workbyaskingsomechildrentoreadtheirconversationstotheclass.2．Asksomequestionsabouttheinventions.Forexample.whatdoyouthinkisthemosthelpfulinvention?3．Dictatethewordsbelow:bulblight,microwaveoven,island.StepⅡ1aThisactivityintroducesnewvocabulary.First,showthenewvocabularyonthescre
5、enbyaprojector.sweetadj.甜的；含糖的saltyadj.咸的；含盐的crispyadj.脆的；易碎的souradj.酸的；酸味的potaton.土豆chipn.(食物等)片mistaken.错误；过失；误解bymistake错误地thinadj.薄的；细的intheend最后；终于chefn.厨师sprinklev.撒(粉末状物)；洒(液体)Pointtoeachwordonthescreenandteachthestudentstoreadonebyone.Doitseveraltimesuntilthechildrencanr
6、eadthenewwordsfluently.Readtheinstructionstotheclass.Pointoutthefouradjectivesontheleft.Havethemreadthefourwordstogether.Thenasksomedifferentstudentstoreadthem.ThenaskthestudentstotrytotellthemeaningofeachwordinEnglishintheirownwords,orgivesomeexamplesoffoodsthatshowwhateachword
7、means.Forexample,helpthestudentsexplainitlikethis:Sweetisusedfordescribingsomethingthattasteslikesugarorhoney.It'stheoppositewordofsour.Afterthat,askthestudentstotellthenamesofthefoodsinthepictures—potatochips,lemon,icecream,tea.Pleasechoosethewordsintheboxtodescribehowthefoodin
8、thepicturestastes.Writethemunderthecorrectpictu
