高中英语 Unit4《Exploring plants》教案（1） 新人教版选修9

英语：Unit4Exploring plants教案（1）（新人教版选修9）教学内容： Plant exploration in the 18th and 19th centuries语言材料分析：本册书针对的是高三学生。本节为本单元第二课时，主要介绍了欧洲18和19世纪的植物探险。本文简要地介绍一些著名的探险家和他们所取得的成果。文章属于总分的结构。通过本文的学习，学生可以扩大视野，了解一些植物探险方面的知识。但是这篇文章篇幅上很长，信息量很大对学生理解该文造成了一定的难度。因此，在本课前要考虑这一问题，帮助高三学生提高阅读速度和对细节信息的分析。Teaching goals:Language target:A. Key words and phrase:exotic, conflict, container, restriction, date back to, appeal toB. Key sentencesa. Collecting “exotic” plants, as they are called, dates bake to the earliest times.b. However, it was not until the eighteenth and nineteenth centuries that the exploration of the botanical world began on a large scale.c. One of the collectors was Father Farges, who collected 37 seeds from a tree that has appealed to him.d. The European classes took great interest in collecting plants.e. Large numbers of seeds failed to grow after long sea voyages.Ability goalsStudents get some information on plant exploration.Students get the main idea, find and infer information according to the reading material.Students express their ideas after reading.Students help, cooperate and communicate with each other.Teaching important pointsTo enable students to understand the reading material by using predicting, skimming, scanning, analyzing, summarizing and inferring after reading.Teaching difficult points1. To enable students make use of given information to express their opinions on the passage.2. Help students observe language points and prepare for the grammar revision.Teaching methodsTask-based learning approach, competition, group work, discussionTeaching aidsMulti-media computer platform, group cardsTeaching proceduresStep 1. Lead-in (3)A. Divide the whole class into small groups.B. A video clipFocus: To arouse students interest and give the task to students.Step 2. Pre-reading (3)Predict according to the title.The author may tell us _ in this passage.A. some plants from other countriesB. the events happening in plant explorationC. how to explore plantsD. famous plant collectorsFocus: Students can make prediction after observing the title carefully.Step 3. While readingPart 1. Fast readingRead for the main idea and solve the task given in pre- reading. (Students work in groups and work out the questions).Part 2. Detailed reading (20)(Students write down the words, phrases and sentences they cant understand and work in groups to solve them and work out the multiple choices questions).Task 1. Scanning1. Plant collectors met many difficulties except_.A. diseases and near-starvationB. the conflicts with local peopleC. restrictions on the movement of EuropeansD. lack of money2. Who is not a collector mentioned in the passage?A. Father dIncarville.B. The Queen of England.C. Robert Fortune.D. E H Wilson.3. The following plants were taken to Europe except_.A. the tree of HeavenB. the Dove TreeC. the tea plantsThe first recorded plant exploration happened _.A. in the 18th centuryB. about 1500 years agoC. about 3500 years agoD. about 2500 years agoFocus: To develop students ability to search for detailed information.Task 2. Analyzing1. The passage is organized in the order of _.A. timeB. placeC. characterFocus: To develop students ability to analyze the whole passage.Task 3. Inference1. What do you think the author will talk about if he adds a paragraph to this passage?The effects of the plant exploration in the 18th and 19th centuries.B. The plant exploration in the 20th century.Information about the Dove Tree.Focus: To help students read beyond the reading material and make their own judgment according the reading material.Task 4. Language observation1. What is the meaning of the underlined part in the sentence “One of the collectors was Father Farge, who collected 37 seeds from a tree that had appealed to him”?A. that surprised himB. that he had never seen beforeC. that attracted himD. that he thought was very valuable2. The earliest record of plant exploration in history dates from 1500 BC.The earliest record of plant exploration in history _ _ _1500 BC.3. People didnt begin to explore plants on a large scale until the 18th and 19th centuries.It was _ _ the 18th and 19th centuries that people began to exploreplants on a large scale.4. The parts in red are used as_ in the sentences.A. the subject B. the object C. the predicative1.He collected seeds of trees.2. French Catholic missionaries were beginning to set themselves up in China.3. The European classes took great interest in collecting plants.4. Large numbers of seeds failed to grow after long sea voyages.5. often we do not realise that many of them come from countries far away.Focus: To help students infer the meanings according to the context.To help students observe the feature of the object and prepare for the grammar learningStep 4. Post-readingHelp Liang Qiming find out who made the greatest contribution in p