(
课件网) Using Language Evaluate chemical farming and organic farming Which tomatoes do you prefer Why Chemical tomatoes Organic tomatoes Leading in What do farmers do to boost yields kill off the pest water the crop rid the soil of the weed Leading in spray pesticides use artificial fertilisers use organic fertilizers Which one is organic farming × × √ Leading in What is the text about Chemical farming versus organic farming (definition, benefit , problem... ) Prediction Thinking 1.What’s chemical farming What’s organic farming 2.Read the passage and complete Task1 and Task 2 on page 56. 3.Summarize the transitional words. 4.Analyze the structure of the passage. Discussion 1.What’s chemical farming What’s organic farming 2.Read the passage and complete Task1 and Task 2 on page 56. 3.Summarize the transitional words. 4.Analyze the structure of the passage. 1. What’s chemical farming 2. What’s organic farming Para.1 Chemical farming is farming using chemical pesticides and artificial fertilizers. Para.3 Presentation 1. Why did many farmers welcome the introduction of chemical farming Many farmers welcomed them as a great way to fight crop diseases and increase production. 2. What concerns many people about the use of pesticides Their long-term use can sometimes harm both the land and people’s health. Para.1 3. What is one problem with the use of chemical fertilisers Crops grown with them usually grow too fast to be rich in nutrition. Para.2 4. How is organic farming different from chemical farming Organic farming is simply farming without using any chemicals. Organic farmers focus on keeping their soil rich and free of diseases through natural means. Para.3 5. Why do organic farmers change the kind of crop grown in a field every year Different crops are grown because they put important minerals back into the ground, making it ready for the next batch of crops. Para.4 6. What is the goal of using organic farming methods Do you think it can be reached Why or why not The goal of using different organic farming methods is to grow good food while avoiding damage to the environment or to people’s health. Para.4 part main idea Detail 1-2 Pesticide can kill helpful . some pesticides have been ,because of the . Crops grown with chemical fertilisers usually to be full of _____ . 3 Many organic farmers use as fertiliser. 4 They often grown in each field . They also plant crops that use of the soil to help keep it rich. 5 Organic farming is nowhere near able to meet the high . D A C B bacteria and insects prohibited damage they cause grow too fast nutrition natural waste from animals change the kind of crop demand for food around the world different depths every year Presentation Title The _____ and _____ of chemical farming. benefits problems Part 1: (Para 1&2) What organic farming is and _____. how it keep the soil rich Part 2: (Para 3&4) Part 3: (Para 5) Conclusion Presentation Presentation ... ...
