Unit 19 Modern agriculture 第一課時教案

unit 19 modern agriculture 第一課時教案
i. teaching aims:
　　talk about modern agriculture and its effects on people’s life
　　learn how to give somebody advice and make decisions.
　　learn to read statistical graphs
　　similar dialogue presentation with new words and expressions used within
　　ii. teaching aids: tape recorder, slides
　　step i warming up
　　1. group work: get ss to work in pairs, and make a list of food which his grandparents and his parents and himself like to eat. then ss find out the difficulty among them.
name breakfast  snacks  lunch  dinner
grandma/ grandpa           
mother/ father           
yourself           
　　2. let ss look at the chart in the book, and ask them some questions:
　　t: “ what the graph is about, look at the words above or below the graph? ”
　　ss: “ growth of major products 1991-95 compared with 1986-90 percentages ”
　　t: “ what kind of food were shown on the chart? ”
　　ss: “ there are grain, cotton, oil, sugar, meat, fish, fruit. ”
　　t: “ what is shown on the y-axis?”
　　ss: “ the percentage in sb ”
　　3. let ss answer the following questions in the book. if possible, students can discus three questions in groups.
　　question 1: how are people’s eating habits changing over the years? why do you think this happens?
　　(earn more money; learn about healthy food;  eat more nutritious fruit juices; eat more fish and meat, etc.)
　　question 2: how has agricultural produce changed during these years? what do you think caused these changes?
　　(various farming products; make more money; new and advanced farming technique,etc. )
　　question 3: what effects do you think the changes in eating habits will have on agriculture or nature?
　　(people need more meat and fruits; farmers need more farmland to grow different crops and produce different foods; farmers need to raise more poultry(家禽), etc. )
　　4. teacher sum up in a few words
　　t: “in words, changes in agricultural produce shows that our living habit and eating habit has improved. farmers have a different and happy life because they can grow different crop to meet people’s need.”
　　step ii  listening
　　1. lead- in
　　t: “ i often find the expression ‘return grain plots to forestry’ in newspapers, do you know what does it mean in chinese? ” (teacher write the expression on the blackboard)
　　ss: “ in chinese, ‘退耕還林’.”