课题Astronomy----Howlifebeganontheearth课时第15课时教案设计教学目标：1.tomasterthenewwordsandexpressionsinthepassage:astronomy,system,violent,harmful,exist,intime,givebirthto,inone’sturn,prevent…from2.tolearntotalkaboutthescienceofthestarsinEnglish.3.tolearnusesomereadingstrategiessuchasguessing,keysentences,skimming,scanningandsoon,soastogetthemainideaandfindsomedetailinformationofthetextquickly.教学步骤：Step1.warming-upWhat’syourfavoritesubject?Howaboutthesubjectofscience?Whatdoesastronomydealwith?Astronomyisthescientificstudyoftheuniverseandtheheavenlybodies(suchasthesun,themoon,andthestars)gas,anddustareinit.Step2.Pre-readingGetsstodiscussthequestionsonpage25withtheirpartners.Thenaskstudentstotelltheirstories.Encouragethemtotelldifferentstories.
