高中英語(yǔ)課件Unit 5 Developing ideas

Unit5Revealingnature

Developingideas新標(biāo)準(zhǔn)《英語(yǔ)》高中選擇性必修第一冊(cè)Activity1Nowtalkaboutwhatelseyouthinktheplantscandoandgiveexamples.Lookatthepicturesandtickwhatplantscando.attackbreatheeatsleepmovespeakstealthink√√√√√Activity2Readthepassageandfindoutthewaysinwhichplantscommunicate.Theymaycommunicatewitheachotherbyusingchemicals,soundand“woodwideweb”.Activity3Completethediagram.communicatewitheachotherfromtheleavesreleaseitsown,differentchemicalswiththeirrootstellifaneighbouringplantishelpful,orunfriendlyclickingnoiseswhenthereisnotenoughwater,indicatingdroughtisarriving.therootsofdifferentplantstoeachothershareinformationandevenfoodstealfoodfromeachother,orspreadpoisonsThink&Share1Whatfigureofspeechisbeingusedwhentheplantsaredescribedascallingforhelp?Whatisitsfunction?2Whatdoes“woodwideweb”mean?3Whatdoyouthinkarethebenefitsofstudyingplantcommunication?4Whatsecretsdothetworeadingpassagesinthisunitrevealandwhatdotheyhaveincommon?1.Personification.Itcanmakedescriptionsmorevivid.2.“woodwideweb”referstoanamazingsystemofcommunicationthatcanlinknearlyeveryplantinaforest.Itislinkedundergroundbyfungiandthisfungalnetworklinkstherootsofdifferentplantstoeachother.Usingthewoodwideweb,plantscanshareinformationandevenfoodwitheachother.3.Itwillhelpusknowmoreabouttheworldofplantsandthengetabetterunderstandingofthesecretofnatureandencourageustoexploremoreaboutthemysteriousnature.What’smore,itwillteachusanimportantlesson,thatis,humanshouldliveinharmonywithmothernature.Anditisourresponsibilitytofulfillthemission.4.Passage1revealsthesecretofevolutionandPassage2revealsthesecretofcommunicationbetweenplants.Theyallreflectthattherearenumeroussecretsinnaturethatarewaitingtobeexplored.Activity41Readthepassageagainandtalkabouthowplantscommunicate.2Thinkaboutanddiscussthefollowingwaysofcommunicationintheanimalworld.Whatotherwayscanyouthinkof??Bees“dance”tosignaltootherbeesthattheyhavefoundfood.?Antscommunicatewitheachotherthroughtouch,chemicalsignals,movingtheirbodiesandevenusingtheirlegstomakesounds.3Organiseyourideasfollowingthestepsbelow.?Beginwithwhatlivingthingsyouhavechosentotalkabout.?Explainhowtheycommunicateandgiveexamples.?Concludebyexplainingwhatwehavelearntfromtheirbehaviour.4Giveatalktotheclassaboutcommunicationbetweenlivingthings.Workingroups.Nowtalkabouthowwellyoucontributedtoyourgroupdiscussionandhelpeachothertomakeimprovements.Activity5Readtheobservationaljournalandanswerthequestions.Howwerethedaffodilbulbsplanted?

Theywereplantedsidebysideinsoilwiththepointedendsfacingup.2.Inwhatenvironmentdidtheleavesgrow?

Theleavesgrewinasunny,butcoolplace.3.Whatdotheflowerslooklike?

Theflowersareyellowandwhite,andshapedliketrumpets.Activity6Workinpairs.Lookatthepicturesandtalkabouthowthesunflowergrows.Writeyourobservationaljournalaboutthesunflower.Activity7Workinpairs.Makeimprovementstoeachother’sobservationaljournalsandsharethemwiththeclass.Anobservationaljournalaboutthesunflower1JuneGermination（使發(fā)芽）Coveredwith1/2cmofmoistsoil,thesunflowerseedtakesfiveto12daystocomeupafterbeingplanted.Waterhasbeenaddedregularlyandthehardseedcoatsoftensinthedampsoiltoallowthefirstroottopiercedownwardsandthefirstleavestopushtothesoilsurface.6JulyGrowthTherootcontinuestogrowdownward.Thesinglestemgrowshollowandsmooth,revealinglargespade-shapedleavesfromthegrowingtip.Gradually,theplant‘sgrowingtiprevealsthefirsthintsofdevelopmentoftheflowerbud.Theplantstembecomesmorewoody.26JulyFloweringAboutthreeweeksaftertheflowerbudfirstbecomesvisibleatthetipoft