Unit 2 The environment Period 4 Word PowerTeaching aimsl Help the students to build up vocabulary about environment.l Enable the students to use the vocabulary both orally and in writing.l Enable them to make a list of words with the prefix “eco” Teaching procedureStep 1 Warming-upShow the students a plastic bottle and a paper box. Ask the the following questions:l What does each of them made of?l Which one is friendly to the environment?Tell them the paper box is environmentally friendly. And I am an environmental- ly friendly personl If I am going to open an hotel, what kind of hotel will it look like? l What makes it special?Step 2 ReadingGet them to read the short passage in part A. And guess the meaning of the words. ecotouristecosystemSolar energyFossil fuelEco-friendlyTourist who does not harm the environmentenergy from the sunfuels like coal, oil and natural gas ect.Being no harmful to the environmentEnvironment in which humans and animals are living inStep 3 Talk about the pictures1. Ask the students to look at the pictures. Work in groups and then answer the questions.n What can you see in the picture?n What is the problem does the picture want to show us?2. Ask some students to talk about the pictures. And then use the correct compound nouns in the box to label the pictures below. Give them explanation if necessary.Step 4. Have a try Ask the students to read the passage on page 27. Fill in the blanks with the words from the previous page. Answer: environmental ozone layer ecosystem solar energy Fossil fuels recycled pollution ecotouristsStep 4 Vocabulary supplement Ask the student to work in groups. And ask them to write down words with the prefix “eco” as many as possible. The group finding the most will be the winner. Tell them they may use a dictionary. Possible answer: ecology eco-tourism eco-friendly ecosystem eco-balance Step 6 Homework Suppose you are newspaper reporter. You happen to see the scene shown in the pictures on page 26. Choose one to write a report on what you see and what you think about it.Comments: This lesson is to build up the students vocabulary on environment. It is better to provide more words concerning the environment to make the teaching process go more smoothly. 2专心 爱心 用心