安徽省滁州市第二中学北师大版高中英语教案 选修8《Unit 22 Environmental Protection 》The Twelfth Period Bulletin Board & Unit Diary.doc

安徽省滁州市第二中学北师大版高中英语教案 选修8《Unit 22 Environmental Protection 》The Twelfth Period Bulletin Board & Unit Diary.docTeaching goals 教学目标 Exchange the information of the worst disasters in history. Finish Unit Diary. 1. Ability goals 能力目标 Enable the students to write about what they know on board. 2. Learning ability goals. 学能目标 Help the students learn how to assess their learning over the unit. Teaching important points 教学重点 Help students to form good habits of learning English. Teaching difficult points 教学难点 How to improve students ’ learning strategies Teaching methods 教学方法 Reading, discussing and summarizing Teaching aids 教具准备 puter Teaching procedures & ways 过程与方式 Step I Revision Check the homework. Point out mon errors students have made. Step II Awareness Ask students to read the three disasters on Page 17. Then they will discuss in groups. Each member will speak out what they know about the worst disasters. After they discuss what the worst disasters in history are in groups, each of them will write what he or she knows on board. The whole class will exchange their information. If students have an access to the , they may find what they need easily. If they don ’ t, Teacher may provide some. Tangshan: The Deadliest Earthquake At 3:42 . on July 28, 1976, a magnitude earthquake hit the sleeping city of Tangshan, in northeastern China. The very large earthquake, striking an area where it was totally unexpected, obliterated the city of Tangshan and killed over 240,000 people — making it the deadliest earthquake of the twentieth century. What was the biggest earthquake ever? The biggest earthquake known in historical times occurred on22 May 1960 in Chile, with a magnitude Mw . It occurred because ofa rupture in the Earth's crust that extended horizontally about 1000 km along the coast of South America; in some places this quake caused vertical uplifts as large as six meters. The second biggest earthquake known, with a magnitude , occurred in Alaska on27 March 1964; it had a rupture length of800 km, and caused as much as11 meters of uplift. Theoretical calculatio