新课标高中英语chemicalororganicfarming教案.doc

unit 2 chemical or organic farming? (extensive reading)detailed lesson planbackground information school:. teacher: . students: . material:chemical or organic farmingtype of lesson: extensive reading lesson duration: 40 minutes date: 14/2/5 aids: learning material, ppt, whiteboard, textbook, chalk, blackboard, contents extensive reading objectives:1 insrructional objectives; by the end of the class, students should be able to: develop students reading skills by skimming for main ideas and scanning for details. have students learn and talk about disadvantages of chemical farming and advantages of organic farming. master some key words and phrases: chemical, organic, build up, lead to, keepfree from, focus on, production, cause damage to.2. educational objectives.by the end of the class, students should be able to: motivate students interest to read improve students confidence in reading 3. personal objectives1) guide and motivate students to read purposefully.2) give students proper guidance while they are readingimportant and different teaching points:1. enable students to learn to use strategies such as skimming, scanning, and so on to do their reading.2. to understand the main ideas by grasping some important information.teaching aids: a multimedia project, colour chalks, text, whiteboard.teaching procedure and time allomentstep 1. lead in(3mins)1. greetings: good afternoon, students, how are you doing today?2. ask student: show two pictures of kiwi fruit and ask students which kind they prefer tell students the smaller ones are organic fruit and the big ones are chemical ask students which kind is better for our health and if they want to know more read the passage on page 14.step 2.reading(15)1. skimming(6mins) skim to find the main idea for each paragraph.para1. effects of chemical fertilizerpara2. problems caused by chemical fertilizers.para3. farmers and customers turn to organic farming.para4. other methods to keep the soil fertile.2. scanning(9mins)1. why are chemical fertilizers so popular in farming today? ( para1 )many farmers welcomed them as a great way to stop crop disease and increase production2. what problems can be cause by using chemical fertilizers? ( para2 )answer: first, they can damage_ the land by killing_ the helpful bacteria and pests. they also _stay_ in the ground, build up_ in peoples bodies and _lead to_ cancer or other illnesses. in addition, it usually grows too fast to be full of nutrition.tips: build up a new government takes time to build up. taking exercise helps us build up our body. lead to - all roads lead to rome. hard work is the main way which leads to success.3. read para3 what is organic farming? answer: organic farming is farming without using any chemicals. what are the advantages of organic farming?answer: the farmers focus on keeping their soil rich, reducing disease and keeping the air, soil, water and crops free from chemicals. tips: focus on: you should stop focusing on playing computers and you really had to focus on your study. keep free from: exercise can keep us free from disease. the united nation is trying to keep the world free from the threat of war.step 3 summery(10mins)focus on; lead to; problem; keep free from; method; organic; chemical; cause damage to; build up; discovery in recent days, scientists have discovered that using _ fertilizers for a long time can _ the land and also peoples health. there are several _ caused by chemical fertilizers. they damage the land, stay in the water for a long time which can _ in peoples bodies and _ many illnesses. with these _, _ farming is becoming more popular with some farmers. they dont use any chemicals and _ keeping the soil rich. this also _ the air and crops _ chemicals. there are many organic farming _ for making the land healthy and productive. all of these methods try to produce good food and to keep the environment and peoples health. answers: chemical; cause damage to; problems; build up; lead to; organic; focus on; keepfree from; methodsstep 4. practice-discussion(12mins)list the reasons why you like the beautiful or ugly fruits. id prefer because its better to choose . this is good value because id rather.step 5. homework1. read the passage more carefully after class, and underline some useful language points.step . the design of the blackboard.chemical or organic farming?chemical f