发布时间 : 星期四 文章浜烘暀鐗堥珮涓嫳璇�変慨7浜戝崡鐪侀檱宸濆幙绗竴涓閫変慨涓僓nit 2 Robots闃呰 2 浜烘暀鐗?- 鐧惧害鏂囧簱更新完毕开始阅读
探索尚未知道的东西
Teaching goals教学目标 1. Ability goals 能力目标
Learn about robots and their fight against landmines. 2. Learning ability goals学能目标
Help students to learn how robots are helping human beings in clearing landmines. Teaching important points教学重点 How robots are helping human beings. Teaching difficult points教学难点 How to improve students’ reading skills. Teaching methods教学方法 Listening, reading and discussing. Teaching aids 教具准备 Multi-media computer.
Teaching procedures & ways教学过程与方式 Step Ⅰ Lead-in and listening T: Good morning / afternoon, class! Ss: Good morning / afternoon, Mr. / Ms ... T: What’s the topic of this unit? Ss: Robots.
T: Quite right. Let’s recall what a robot is.
Ss: A robot is a machine designed to do jobs that are usually performed by humans. T: A robot is a machine that performs a function, either to aid in everyday life or simply to entertain. Now look at the following pictures of robots and tell what each robot does.
Show the pictures on Page 54 on the PowerPoint.
After talking about what tasks each robot can complete, continue with the listening
探索尚未知道的东西
exercises.
Deal with the listening exercises on Page 54. Ask students to pay attention to the function of each robot. Step Ⅱ Reading task
While dealing with the reading material, ask students to pay attention to the reading skills.
T: From the interview, we learned some more functions of a robot. As we know robots are designed and built to do tasks that are dangerous, uncomfortable, or repetitive for humans. Today we are going to read a magazine article about landmines. First read this piece of news about landmines. Show the following on the PowerPoint.
Three decades of war in Cambodia have left scars in many forms throughout the
country. Unfortunately, one of the most lasting legacies of the conflicts continues to claim new victims daily. Land mines, laid by the Khmer Rouge, the Heng Samrin and Hun Sen regimes, the Vietnamese, the KPNLF, and the Sihanoukists litter the countryside. In most cases, even the soldiers who planted the mines did not record where they were placed. Now, Cambodia has one of the highest rates of physical disability of any country in the world. At the current rate of progress, it may take as many as 100 years to clear all the mines in Cambodia, and the UN estimates that with current technology, it will take nearly 1,100 years to clear all the mines in the world. T: This is the situation in Cambodia. Here and there are the mine signs. In spite of so many warning signs, there are still many victims. Look at the following pictures.
Fast reading
Ask students to find the answers to Ex1 using fast reading skills.
探索尚未知道的东西
T: From the above we can see clearing landmines is challenging. Luckily scientists and engineers have designed a robot to do the job. Now open your books at Page 57 and read the text quickly and then do Ex1. Explain the two reading skills to students.
Scanning—reading very fast to find specific pieces of information. Skimming—reading very fast to find only the main ideas of a text. Five minutes later check the answers with the whole class. Careful reading
Ask students to read the text carefully and then do Ex1. Students will discuss the answers in groups first, and then check the answers with the whole class. Suggested answers:
1.1 The main topic is the role of robots in the fight against landmines. The title tells us that.
1.2 Natasha Wesley.
1.3 Someone using a metal detector to find landmines; the robot that can find landmines; some people who have lost their legs because of landmines. 1.4 Chiba University. (Japan) 1.5 Afghanistan and Cambodia. Main figures in the text
Ask students to review the facts linked to the figures. Students are asked to work in pairs. Seven minutes later show the suggested answers on the PowerPoint. Suggested answers:
2.1 How many people are killed or badly injured by landmines every year? 2.2 How often is someone killed or injured by a landmine? 2.3 For how long do landmines keep causing damages?
2.4 How many landmines are buried beneath the surface of the ground? 2.5 In how many countries are landmines buried? 2.6 How many landmines are removed every year?
2.7 How many landmines are buried in the ground every year? 2.8 How big is the robot that can find landmines?
探索尚未知道的东西
2.9 How much does it weigh? 2.10 How many legs had it got?
2.11 When was the agreement to stop the manufacture and use of landmines signed? 2.12 How many countries signed on the agreement? Step Ⅲ Discussion
Ask students to discuss the text and the following material. Then encourage them to write a letter of suggestion to Bush—the president of the US, for the US hasn’t yet committed to the Mine Ban Treaty. In the letter you will suggest the US stop manufacturing
landmines and spend more money on solutions to clearing landmines, for example developing new robots to remove the landmines.
T: From the text we’ve learned how serious the situation is. Many lives are put into danger. So we must do something to improve the situation. As we know, the US hasn’t yet committed to the Mine Ban Treaty. I hope you will write a letter of suggestion to Bush—the president of the US. You may refer to the text and the following material. Show the following on the PowerPoint.
Producing one landmine costs $3, yet once in the ground it can cost more than
$1,000 to find and destroy, according to the ICBL. Over 80 percent of the 15,000 to 20,000 landmine victims each year are civilians, and at least one in five are children, according to the International Campaign to Ban Landmines (ICBL). The deadly legacy of landmines far outlasts the conflicts that gave rise to them. Among the most contaminated countries are Iraq, Cambodia, Afghanistan, Colombia, and Angola. If time is limited, ask students to finish it outside class. Step Ⅳ Homework
Finish writing the letter to President Bush. A sample letter:
Sun Cheng China 28 March
Dear Mr. President,