Unit 4 Exploring plants Part 1 Teaching Design 第一部分 教学设计
Period 3 A sample lesson plan for Using Language (FLOWERS AND
THEIR ANIMAL POLLINATORS)
Introduction Language is learned to be used in and for communication. So in this period we shall have the students look and talk about some strange plants, read a passage about flower pollination and rewrite what is read. Objectives ■ To help students read a text about flowers and their pollination ■ To help students speak about plants ■ To help students rewrite what is read Procedures 1. Warming up taking a quiz Take the following sentences in direct speech and put them into indirect (or reported) speech. She said, "I've worked here since I left my last job." She told me that she had worked there since she had left her last job. You said, "I will help you!" You said you would help me! She asked me, "When are we going to leave?" She asked me when we were going to leave. Peter said, "I may bring someone with me to the party." Peter said he might bring someone with him to the party. My friend said, "I will have finished my homework by the time you arrive." My friend told me he would have finished his homework by the time I arrived. Mark asked me, "Why do you want to study Russian?"
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Mark asked me why I wanted to study Russian. Marcia said, "I have been waiting for you for over an hour." Marcia said she had been waiting for me for over an hour. Alison said, "I had eaten before you arrived." Alison told me she had eaten before I had arrived. Lenny sang, "I want to get away, I want to fly away" Lenny sang he wanted to get away, he wanted to fly away. Jason asked me, "Are you coming with me?" Jason asked me if I was coming with him. 2. Looking and talking Now go to page 36. Look at the photos and listening to me talking to you about the living stones plant, Refflesia and pitcher plants. ●Pitcher plants are carnivorous plants whose prey-trapping mechanism features a deep cavity filled with liquid. Insects such as flies are attracted to this cavity, often by visual lures such as anthocyanin pigments, and nectar bribes. The sides of the pitcher are slippery and they are also grooved in such a way so as to ensure that the insects cannot climb out. The liquid contained within the pitcher traps, drowns, and gradually dissolves the body of the insect. This may occur by bacterial action, or be due to enzymes secreted by the plant itself. ●Rafflesia is a genus of parasitic flowers. It contains 18 species, all found in South-East Asia, on the Malay Peninsula, Borneo, Sumatra and Kalimantan, and the Philippines. The flowers have no leaves and hardly any stem, just a huge speckled five-petaled flower with a diameter up to one metre, and weighing up to 10 kg. Even the smallest species, R. manillana, has 20 cm diameter flowers. The flowers smell like rotting meat, hence its local names which translate to "corpse flower" or "meat flower". It is parasitic on a vine, spreading its roots inside the vine. The fruit is eaten by tree shrews. Rafflesia is a official state flower of Sabah in Malaysia. Now you are going to listen to a talk by Mark, Gordon and Andrea telling about these three unusual plants and complete the two charts on page 36. 3. Reading for forms Read the text FLOWERS AND THEIR ANIMAL POLLINATORS on page 38 to: cut/ the sentence into thought groups, blacken the predicative, darken the connectives and underline all the
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useful expressions. 4. Copying expressions and making sentences Expressions form FLOWERS AND THEIR ANIMAL POLLINATORS over time，be rewarded with…, attach to…, pass on to…, take place，increase the chances of…, the survival of…, adapt to do, the type of, depend on, for example，describe some features of bright yellow，have special pattern, guide…to…, land on, form a tube of, a suitable length for butterflies, in tight bunches, provide a place for butterflies to land on，match the length of…, bend back, get close to… 5. Writing, by imitation, a passage of your own based on the text on page 38 Over time，many good habits and bad habits have evolved together．We need the good habits to grow up well and we are rewarded with food good grades when we take the exams．If we become attached to the bad habits during our growth we are then changed into bad children．So being bad takes place，therefore increasing the chances of us getting bad grades at school. Through the years，most of us have adapted to develop specific types of habits．Studying hard, behaving well and being neat and clean are the most important good habits．Being late for school, forgetting about homework，making noises in class are bad habits． The type of habits we have depends on the school atmosphere and the influences of the parents．For example，good schools and nice parents help develop good habits in us. 6. Closing down by investigating the importance of plants PROCEDURE: ＊ Do you know why plants are important? ＊ You are going to investigate the importance of plants and produce a report in pairs. ＊ You may review the information provided in the "Background" section on page 31 first. ＊ Then read the text on page 32 second. ＊ After school you may use the Internet to get more necessary information. In some of the search engines like http://www.yahoo.com and http://www.google.com go over some of the key words that might help you to search more successfully. ＊ Words like: paper products, agriculture, fabrics, medicine, and food may produce a long list of sites you can investigate.
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