案例water.doc

Teaching planwater徐兰珍一、案例背景古人云教师：传道、授业、解惑，当今教书育人是教师的天职。由此可见教师的职责都应以育人为第一位，教书为第二位，教师不再是教书匠，而是伟大的教育家。教师不仅要传授给学生科学知识，更要教育学生做人的基本道德。二、教学内容六年级第二学期 Unit 9: sea water and rain water三、情感目标通过对地球上水资源的了解及水的重要用途的认识，让学生懂得节约用水的重要性，同时懂得如何保护我们的水资源。四、教学目标掌握use sth (not)to do sth 及 save water by (not) doing sth 句型五、教育过程1、Show slides幻灯片1Earth is the only planet in the solar system known to contain useable water. Even so, the amount of usable water on the planet is far less than what is commonly perceived. Of all the water on Earth, 97 percent is sea water, too salty to drink. Two percent is locked in the remote Arctic and Antarctic icecaps and glaciers. Much of the remaining one percent exists as water vapor in the atmosphere. That leaves less than one percent of fresh, useable water for all the plants and animals on earth.Some scientists have projected that the demand for fresh water will soon outstrip the supply. They predict that about two thirds of the Earths population will face water shortages by 2025. Millions of people will become water refugees as they are forced from their homelands in search of clean fresh water.幻灯片2However, the lack of potable water isnt only a problem for future generations; it is a problem here and now. Young ones are hit the hardest. In some areas of the world, many children suffer from gastroenteritis or are infected with parasitic roundworms and flagellates. Water shortages and unsanitary drinking water, both resulting from a lack of water purification facilities, are the main culprits. According to the United Nations International Childrens Emergency Fund (UNICEF), more than 1.6 million children die each year from causes related to unsanitary drinking water.This figure represents nearly 4,400 child deaths every day-enough to fill 12 jumbo jets. If 12 jets filled with children crashed each and every day, the world would have long ago mobilized to rectify the situation. Unfortunately, the same number of deaths by drinking dirty water has not commanded enough attention yet, and children continue to pay the price for our indifference. What can we do about this tragic situation? How can we halt this slide into chaos and maintain a world where drinking water is adequate and sustainable?2、 Discuss in groups What will happen if there is no water ( A. At home B. In the countryside C. In the city) At home If there is no water to drink, we can only live for about three days without water. If there is no water, we will not be able to brush our teeth. If there is no water, we will not be able to have a shower. If there is no water, we will not be able to wash our clothes or the dishes.In the countrysidePlants and animals need water to grow. If there is no water, they will die. We will not have any rice, any vegetables or any meat. We will have nothing to eat. We can only live for about one or two weeks without food.If there is no water in the streams or rivers, fish will have nowhere to live. They will die. We will have nowhere to swim.In the cityIf there is no water, the cooks in restaurants will not be able to cook food. If there is no water, firemen will not be able to put out fires.At schoolIf there is no water, students couldnt have their lessons in the laboratory. The toilets will not be cleaned. Students will have no water to drink.We will have no water to wash our hands.3、 小组完成项目：The use of waterPeople(at home)Students(at school)Other people(at work)For brushing For showeringFor _In art lessons:(when your teacher asks you to paint a picture)(when your hands are dirty)_Farmers:_cooks:_firemen:_4、Show slidesThe use of water. Drill “use sth. to do “5、Look at the pictures in the poster, complete the sentences (save water)Dont brush your teeth under a running tap.Dont wash the dishes and plates under a running tap. Dont wash vegetables under a running tap. Fix the dripping tap. Turn the dripping tap offTake a shower rather than a bath.Dont waste water for playing games.6、Work in groups write a report-How can we save water We can save water by fixing a running tap.Drill:save water by doing sth save water by not doing sth7、How to protect our water Water is very important to the human beings. But now many rivers and lakes are polluted. And what shall we do ?We can do like these things: First all of us must know water on the earth is limited. We can tell the visit people how important the water is. We should have the idea to save it. Second we must use properly. We must protect the factory form pouring waste water into the river. We should stop people from throwing litter into the river. Many kinds of litter may pollute the environment. Finally let everybody know how t