课 题Global warmingability goalsHelp the students learn how to use new words and expressions of this unit and how to use “it” for emphasis.KnowledgegoalsEnable the Ss to learn and master the following words and phrases:compare, graph, phenomenon, fuel, quantity, per, data, catastrophe, climate, consequence, state, range, glance, widespread, decrease, steady, steadily, average, existence, outer, elec trical, motor, can (n.), microwave, nuclear, disagreement, title compare to, come about, quantities of, result in, build up, keep on, on the whole, make a difference, put up with, so long as, and so onEmotional and valuable aimsEnable the Ss to find fun in cooperative learning.Arouse the Ss’ interest in language study through making practical sentences with the key words in group competition.Key pointsThe structure of “It is ... that ...”.Difficult pointsTeach the students how to master the use of “it” for emphasis.Teaching methodsExplanation and practice.Teaching aidsThe Multi-media and other normal teaching toolsperiodThe fourth period教 学 内 容设计与反思板书设计:G1 G2 G3 G4 教 学 内 容设计与反思Teaching procedures Step ⅠRevisionA sample poster:What Can We Do about Carbon Dioxide?Carbon dioxide is one of the main causes of global warming which will bring the earth catastrophe. Here are a few ways that individuals can follow to reduce its content in the air.● Turn the electri cal appliances off if you are not using them.● Put on more clothes if you are cold instead of turning up the heat.● Walk or ride a bike instead of using motor vehicles if you can.● Recycle cans, bottles, plastics and newspapers; buy things made from recycled materials.● Buy products that are made to save energy such as fri...
