外研版（2019）必修三Unit3Theworldofscience導(dǎo)學(xué)案課題Unit3TheworldofsciencePresentingideas課型新授課課時(shí)第五課時(shí)學(xué)習(xí)目標(biāo)1.Tomasterbasicknowledgeofthislessonandusethemfreely.2.Todevelopstudents’analyzingabilitiesandlearntoexpressthemselves.3.Tohelpstudentslearntowriteanexperimentreport.重點(diǎn)難點(diǎn)1.Mastersomekeywordsexist,squeeze,boilphrasesdrawaconclusion,insteadofandsomeexpressions.2.Toimprovestudents’writingabilitiesbypractising.學(xué)法指導(dǎo)1.課前30分鐘自主學(xué)習(xí)，完成預(yù)習(xí)學(xué)案。找出自己的疑惑和需要討論的問題，用紅筆做好標(biāo)記。2.課上25分鐘高效討論展示答案3.課上10-15分鐘答疑解惑。4.課后20分鐘鞏固學(xué)習(xí)課堂探究WritinganexperimentreportStep11Readtheinstructionsfortheexperimentandanswerthequestions.1)Whatdoyouthinktheresultsofthisexperimentwillbe?2)Whatcanyoulearnfromthisexperiment?2CompletetheboxeswiththeinformationinActivity1.Dofurtherresearchifnecessary.IntroductionIntroductionIntroducetheaimoftheexperiment.MainbodyDescribethematerialsusedintheexperimentandexplaintheprocedure.ConclusionReporttheresultsandwhatyouhavelearned.ThisexperimentisdesignedtoThisexperimentisdesignedtoIpreparedIpreparedtodothisexperiment.ProcedureAftertheexperiment,IcandrawtheconclusionthatAftertheexperiment,Icandrawtheconclusionthat‘Nowwriteareportoftheexperiment.3.Shareyourstorywiththeclass.Step2Presentingideas1Workingroups.Lookatthepicturesanddiscusshowtheseobjectshavechangedovertheyears.Watchthevideoandseehowthetelephonehaschangedovertheyears.2ChooseoneoftheobjectsinActivity1oranobjectthatyouuseeveryday.Predicthowitwillfurtherchangeoverthenext50years.Makenotesaboutyourideas.Myobject:Myobject:Howitwillchange:Whyitwillchange:3Presentyourideastotheclass.Usethenotestohelpyou.