1、Teaching aims: 1.Learn the words and phrases: the earth, in Asia, the Yangtze River, the Yellow River, the Nile, in Africa, the Caspian Sea, Qomolangma, desert, the Sahara, square kilometers 2.The students will be able to use the expressions: Whats the highest mountain/the longest river/ the deepest
2、 salt lake/ the biggest desert in the world? 3. To express the big numbers using: thousand, million,billion, kilometer. 4. Be able talk about the paleography and nature using long/deep/high. 5. The students can use the questions to get information to improve their listening and speaking abilities. 6
3、. To train the students cooperation with their partners. 7. To train the students to care about the worlds environment through talking about the worlds tops. Teaching important points: The comparative and superlative of adj. Note its grammar meaning and use “what” questions to ask about the worlds t
4、ops Teaching difficult points: The students can ask questions to get information to improve their listening and speaking abilities. Teaching aids: CAI, a recorder, Teaching procedures: Step 1. Lead in. Ask students to sing along a song named numbers. (复习基础数字，为复杂数字学习做准备。) Step 2. Presentation Show so
5、me numbers, ask students to read and write. 7seven 77seventy-seven 777seven hundred and seventy-seven 7,777seven thousand, seven hundred and seventy-seven 77,777seventy-seven thousand, seven hundred and seventy-seven 777,777seven hundred and seventy-seven thousand, seven hundred and seventy-seven 77
6、7,777,777seven hundred and seventy-seven million, seven hundred and seventy-seven thousand, seven hundred and seventy-seven 777,777,777,777seven hundred and seventy-seven billion, seven hundred and seventy-seven million, seven hundred and seventy-seven thousand, seven hundred and seventy-seven Step
7、3. Sum up: 0-12 特殊； 13-19 后加 teen， 整十后加 ty, 十位与个位间加连字符-， 百位与十位间可加加 and。 从数字的右端向左端数起， 每三位数加一个逗号， 右数第一个逗号前加 thousand， 第二个逗号前 million，第三个逗号前 billion，逗号间按百位数来读。 （通过个例的展现，总结出一般规则。） Step 4. Presentation： Show some pictures and talk about them. 1. Qomolangma. 2. the Nile. 3.the Caspian Sea. 4. the Sahara.
8、Step 5. Match the facts you know. Qomolangma.about 9,600,000 square kilometers in size the Nile.1,025 meters deep the Caspian Sea.6,671 kilometers long the Sahara.8,844.43 meters high Step5. 1b Listen, and complete the sentences. 1. Qomolangma is _ than any other mountain in the world. 2. The Sahara
9、 is _ desert in the world. 3. The Caspian Sea is _ of all the salt lakes. 4. The Nile is _ river in the world. Check the answers with the ss. Play the video again. Now, lets check the answer. Step 6. Pair work 1. Get the students to have a pairwork, talking about the places in the picture. 2. Show s
10、ome other pictures on the screen and go on the talking. 3. Read through the dialogue in Activity 1c and talk about what the worlds tops are, 4. Practice the conversations with the partners like this. A: Whats the longest river in the world? B: The Nile. (To learn the worlds tops and the big numbers.
11、) The longest wall, the biggest province. The biggest river, The biggest square The largest island the longest river, biggest grassland, The biggest city, the biggest mountain city, The deepest lake. Step 7. Homework Assign todays homework Find out more tops in the world or in China and show them to
12、 classmates. Recite the 5 sentences in 1b. Bb design Unit 7 Whats the highest mountain in the world? Period 1 (Section A 1a -1c) A: Whats the highest mountain in the world? B: Qomolangma. .kilometers long/deep/big one of the oldest countries in the world the second longest river in the world Thinking after class：
