Unit10Whenwasitinvented？TheFourthPeriodⅠ．TeachingAimsandDemands1．KnowledgeObjects(1)KeyVocabularysweet,salty,crispy,sour,potato,chip,mistake,bymistake.thin,intheend,chef,sprinkle(2)TargetLanguageDidyouknowpotatochipswereinventedbymistake?No,Ididn'tknowthat.Whoinventedthem?2．AbilityObjects(1)Trainthestudents'reading,writing,speakingandlisteningskillswiththetargetlanguage.(2)Trainthestudentstousethenewvocabulary.3．MoralObjectsDoyouenjoyeatingthepotatochips?Haveyoueverthoughtofthehistoryofthechips?Ⅱ．TeachingKeyPoints1．Trainthestudents'reading,writing,speakingandlisteningskillswiththetargetlanguage.2．Teachthestudentstousethenewvocabularycorrectly.Ⅲ．TeachingDifficultPointsDothelisteningpractice.Ⅳ．TeachingMethods1．Listening2．PairworkⅤ．TeachingAids1．Ataperecorder2．Somebagsofpotatochips.Ⅵ．TeachingProceduresStepⅠRevision1．Checkthehomeworkbyaskingsomechildrentoreadtheirconversationstotheclass.2．Asksomequestionsabouttheinventions.Forexample.whatdoyouthinkisthemosthelpfulinvention?3．Dictatethewordsbelow:bulblight,microwaveoven,island.StepⅡ1aThisactivityintroducesnewvocabulary.First,showthenewvocabularyonthescreenbyaprojector.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.Doitseveraltimesuntilthechildrencanreadthenewwordsfluently.Readtheinstructionstotheclass.Pointoutthefouradjectivesontheleft.Havethemreadthefourwordstogether.Thenasksomedifferentstudentstoreadthem.ThenaskthestudentstotrytotellthemeaningofeachwordinEnglishintheirownwords,orgivesomeexamplesoffoodsthatshowwhateachwordmeans.Forexample,helpthestudentsexplainitlikethis:Sweetisusedfordescribingsomethingthattasteslikesugarorhoney.It'stheoppositewordofsour.Afterthat,askthestudentstotellthenamesofthefoodsinthepictures—potatochips,lemon,icecream,tea.Pleasechoosethewordsintheboxtodescribehowthefoodinthepicturestastes.Writethemunderthecorrectpictures.Notethatsomepictureshavemorethanoneword.Tellthemtoseetheexampleanswerbeforewriting.Afterawhile,checktheanswersbyaskingseveralstudentstoreadtheiranswerstotheclass.Answers:potatochips:crispy,saltylemon:souricecream:sweettea:sweetOptionalactivityBringsomefoodsthattastesweet,crispy,saltyandsourtotheclass.Havesomestudents,oneatatime,tastelittlepiecesofeachfood.Thenreporthowthefoodstastetotheclasswiththenewadjectives,sweet,crispy,saltyandsour.Studentsmayonemorethanonewordtodescribesomefoods.StepⅢ1bThisactivityprovidespracticeusingthenewvocabularyandwritingfamiliarwords.Askthestudentstoreadtheinstructionstogether.Pointoutthefourtastewords.Thenpointtothesampleanswergiven.Pleasewritethenameofadifferentfoodaftereachword.Youcanwritethenameofanyfoodyouknowintheblank.Canyouthinkofothersweetfoodnow?(apple,orange,etc.)Askthestudentstocompletetheactivityontheirown.Aftertheyallfinishwriting,asksomestudentstoreadtheiranswerstotheclass.Checktheanswerswiththewholeclass.Answers:Answerswillvarybutmayinclude:sweet:apple,orangejuice,soda,cake,honeycrispy:frenchfries,salad,lettucesalty:frenchfries,olives,pepperoni,pizza,popcornsour:pickle,grapefruitStepⅣ2aThisactivitygivesstudentspracticeunderstandingthetargetlanguageinspokenconversation.L...
