高中英语：Module5 A lesson in a lab-reading&vocabulary学案（外研版必修1）

Module 5 A lesson in a lab—Reading and Vocabulary 学案Learning aims: 1. Revise the usage of Degrees of Comparison by translating some sentences. 2. Know more about the two experimentsLearning steps:【个人探究】 I. Translate the following sentences into English. 1．这座新大楼是那幢旧楼的 3 倍大小。 The new building is three times the size of the old one. The new building is three times larger than the old one. The new building is three times as large as the old one. 2．孙老师说英语和你一样流利。 Mr Sun speaks English as fluently as you. 3．他越努力学习，就越感到快乐。 The harder he works, the happier he feels. 4．那个女孩越长越漂亮了。 The girl becomes more and more beautiful.【全员探究】Come to the Reading and Vocabulary. Ask the question: What are the stages of a scientific experiment? They are as follows: aim—method---result—conclusion Now read passage A and finish Activities 2 and 3. Answer: The reaction of metals Answers: 1. potassium, calcium, and sodium 2. It burns to form an oxide 3. Magnesium, aluminum, and zinc 4. It has a slow reaction. 5. No, it doesn’t.【当堂达标】Prepare for the test.Prepare some test tubes, some oil, test tube holder, cotton wool, iron nails, Bunsen burner. Describe the experiment to the students and ask the students to explain what will happen in the end.Ask the students to read Passage B and try to fill in the table on page 45.Answers:Iron in dry airiron in air-free wateriron in ordinary waterStage AStarting experimentcotton woolwaterwaterStage B1 week laternailswater用心 爱心 专心Stage CResultIron doesn’t rustIron does not rust.Iron rusts.Ask the students to read the text for some time and try to retell the experiment with the help of the table.If there is time, check if some can.【Homework:】Retell the experiment and report a similar experiment.用心 爱心 专心