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在多媒体教学普及的今天，也许你并不诧异课堂上每位学生面前都摆放着一台电脑，然而所有学生却都能在教师的有效引导下，通过博客、BBS公告板等操作界面自由且有序地发表自己的想法，进行交互式的学习交流。也许，你便会觉得如今的教学确实有些不可思议。这究竟是如何操作？
本课选取了“关注全球变暖，倡导低碳生活”的主题，通过生态网络这个有效平台，将多媒体课件与网络博客巧妙结合，使语言学习的过程成为学生形成积极的情感态度、主动思维和大胆实践、提高跨文化意识和形成自主学习能力的过程。本课是教者运用网络进行英语教学的一次勇敢尝试，有以下三大特色：
一、网络运用与英语教学特点相结合
在充分体现英语教学特点的前提下，借助网络媒介，教者布置任务、学生搜集信息，教者获取反馈等课堂环节全部通过教者的博客一一展示。与此同时，结合多媒体课件呈现课文主题及细节的把握，这样，学生的分析、甄选和运用信息的能力便得到了提升，且人人都有发言机会，主观能动性也得到了充分发挥。
二、环节设计与低碳主题表达相结合
教学环节的设计，遵循学生的认知规律，从全球变暖的定义、原因、影响、措施四部分入手，做到环环相扣，过渡自然。先让学生自学关于全球变暖的定义；紧接着让学生自由阅读材料，筛选出导致全球变暖的自然与人为因素；然后让学生在此基础上，利用给出的两大相关网站，得出全球变暖的重大影响；最后，导出全球变暖的关键解决措施是低碳生活，并鼓励学生在教者博客上发布如何低碳生活的具体做法。在教学过程中，教者构建了“自学新知——反馈导学——拓展巩固——成果展示”的高中英语网络教学模式。
三、材料使用与情感教育渗透相结合
本课主题是“关注全球变暖，倡导低碳生活”，在精选材料时，教者注重全方位地让学生理解全球变暖的相关情况，比如：一开始地球现状视频的呈现，紧扣学生心弦，使学生带着紧张又兴奋的心情跟随教者思路，步步深入。再比如：在讨论解决全球变暖措施时播放地球一小时的视频，尤其是当学生观看世界各国的标志性建筑由明到暗的那一瞬间所产生的感悟。这定能帮助他们更好地倡导真正意义上的低碳生活。
诚然，以网络为载体的课程教学，也存在着一些教者须需关注的问题，譬如：交互略少，时间分配不够充足，参与度不均衡等。
一、交互略少
师生间、生生间的交互还不够。虽然学生可以通过网络材料的复制、粘贴，到博客发布相关资料，但学生的文字录入水平不尽相同，信息的发布不够及时；虽然部分答案请同学在查找后直接口头表达，兼顾英语课的多读多说的特点，但总体效果差强人意。
二、时间分配不充足
由于本课容量较大，资料搜集、发布、反馈的部分时间若可以再协调合理些，便能更好地发挥网络的优势，进一步增加学生的知识量，开阔学生的视野。
三、参与度不均衡
在查找资料的过程中，由于每个学生信息素养不同，造成参与度的不均衡，有的学生因为浏览速度慢，或打字速度慢，没能充分思考，只听现成答案，没能及时在论坛上发言，未能体验成就感。
今后为了适应不同能力学生学习的需要，在网络课的设计上，在资源的呈现方式上，应精心构思，力求体现多样性和层次性，除了直接提供整合好的资源外，还应为基础好、能力强和善钻研的学生提供更多的信息来源的指导，如网址、搜索引擎、关键词以及光盘等搜索工具，这样不仅可以拓宽学生的信息渠道，更主要的是能因材施教，提高学生信息采集、分析和利用等能力。借助网站交互、协作、激励、评价和引导探索等功能，学生可以迅速而又准确地了解到自己各个环节的学习状况，从而有效地调节独立、自主、协作学习的速度和强度，使学生能在专题学习网站这块令人愉悦的境地里，纵横驰骋，悉心探索，学会合作，去获取更大的快乐。
高中英语网络课Heal the earth 教案
Teaching aims: Ss are expected to learn the definition, causes, effects and solutions of global warming;
Ss are expected to find the useful information through the Internet;
Ss are expected to know the importance of leading a sustainable low-carbon life for our planet and take action to heal the earth.
Teaching difficulties: How to deal with the time assigned for Ss to surf the Internet and make comments;
How to deal with the interaction between Ts and Ss.
Teaching methods: Multi-media, Internet, blackboard, blog (Http://zzzxlee.blog.163.com).
Teaching procedures:
Step1 Lead-in (5min)
“First, I’d like to show you a video about our earth.” (Video1地球状况)
“As we can feel, our earth is becoming hotter and hotter that we have experienced its frightening power -- damaging weather, like tornado, sand storm, rain storm, floods. What’s more, there has been a series of earthquakes occurring in Haiti, Chile(智利), and Yushu in Qinghai, China, and volcano in Iceland as well since 2010. What’s wrong with our earth?” (PPT)
Ss discuss and answer.
“Yes, it is related to global warming/ climate change. Today, we’ll learn something about global warming and then see what we can do to help our earth.”
Step2 The definition of global warming (5min)
“But what is global warming? Please open my blog (Http://zzzxlee.blog.163.com) and find the journal with the title ‘What is global warming’. You’d better surf the Internet through Baidu or Google for the definition and then show your findings in the forum. Before we do that, let me introduce you some rules.”
Rule1 Select the useful information found from the Internet;
Rule2 Write down your findings and explanations in the forum;
Rule3 Use your real name when making comments;
Rule4 Be brave!
Ss start to surf the Internet for the definition of global warming and share the findings in the forum.
Ts select the useful information from the forum and give the definition through PPT.
Step3 The causes of global warming (8min)
“It is said that temperature in the past fifty years is twice as high as that in the past century. But what caused global warming? That’s the next question. Find the journal with the title of ‘The causes of global warming’ Here is a short passage. I’d like you to read it and try to write down the main causes in the forum.”
Ss start to read the material and share the findings in the forum.
Ts select the useful information from the forum and give the two causes of global warming through PPT.
Then Ts show a video on how the 2 greenhouse gases work. (Video2 全球变暖原理)
Step4 The effects of global warming (10min)
Task1
“From the video, we can see that green house gases can stay in the atmosphere for an amount of years ranging from decades to hundreds and thousands of years. No matter what we do, global warming is going to have some effects on Earth. Here are 2 websites recommended for you to find out the effects of global warming. (http://www.sharenator.com/5_Deadliest_Effects_of_Global_Warming/, http://www.americanprogress.org/issues/2007/09/climate_100.html). After learning, you can share your findings in the forum. This is task1.
Ss start to read the material from the two websites and share the findings in the forum.
Ts select the useful information from the forum and give the main effects of global warming through PPT.
Task2
“In order to check whether you’ve got the effects, I’d like you to finish task2. Please match the effects of global warming with the right pictures.”
Ss start to do the match and share the answers in the forum.
Ts select the useful information from the forum and give the right answer through PPT.
Step5 The solutions of global warming (15min)
“Facing these，are we just being negative? So what is the solution? Just like what you said, the main cause of global warming is CO2. Can we reduce the amount of CO2? Maybe a low-carbon living is the key. But how to lead a low-carbon life? Ok, I’d like to show you another video to see the action of our world against global warming.” (Video3 Earth hour from the blog)
“This is what the whole world is doing at the very moment. But what can we do in our daily life? Here are some recommendations to get you started at home or offices, driving, even flying in your daily life. Start from the following aspects each day, each week or each month and share your suggestions on how to do it in the forum.”
*Heating (暖气) conservation
*Electricity conservation
*Water savings
*Food and the fridge
*Driving tips
*Flying tips
*At the office/ classroom
Ss start to find the material from the Internet and share their opinions in the forum.
Ts select the useful suggestions from the forum and give the solutions of global warming through PPT.
Step6 Conclusion (2min)
“The issue of global warming is not about what country you are from; it’s about what planet you are from. And it is not about switching off lights for only one hour once a year; it’s about working together to create a sustainable low carbon future for our planet each day. So, take action from now on! Finally, let’s finish our class in the song ‘Heal the world’ by Michael Jackson. Try to sing together.”
Ss sing together to the music.
作者单位：江苏省震泽中学
本课选取了“关注全球变暖，倡导低碳生活”的主题，通过生态网络这个有效平台，将多媒体课件与网络博客巧妙结合，使语言学习的过程成为学生形成积极的情感态度、主动思维和大胆实践、提高跨文化意识和形成自主学习能力的过程。本课是教者运用网络进行英语教学的一次勇敢尝试，有以下三大特色：
一、网络运用与英语教学特点相结合
在充分体现英语教学特点的前提下，借助网络媒介，教者布置任务、学生搜集信息，教者获取反馈等课堂环节全部通过教者的博客一一展示。与此同时，结合多媒体课件呈现课文主题及细节的把握，这样，学生的分析、甄选和运用信息的能力便得到了提升，且人人都有发言机会，主观能动性也得到了充分发挥。
二、环节设计与低碳主题表达相结合
教学环节的设计，遵循学生的认知规律，从全球变暖的定义、原因、影响、措施四部分入手，做到环环相扣，过渡自然。先让学生自学关于全球变暖的定义；紧接着让学生自由阅读材料，筛选出导致全球变暖的自然与人为因素；然后让学生在此基础上，利用给出的两大相关网站，得出全球变暖的重大影响；最后，导出全球变暖的关键解决措施是低碳生活，并鼓励学生在教者博客上发布如何低碳生活的具体做法。在教学过程中，教者构建了“自学新知——反馈导学——拓展巩固——成果展示”的高中英语网络教学模式。
三、材料使用与情感教育渗透相结合
本课主题是“关注全球变暖，倡导低碳生活”，在精选材料时，教者注重全方位地让学生理解全球变暖的相关情况，比如：一开始地球现状视频的呈现，紧扣学生心弦，使学生带着紧张又兴奋的心情跟随教者思路，步步深入。再比如：在讨论解决全球变暖措施时播放地球一小时的视频，尤其是当学生观看世界各国的标志性建筑由明到暗的那一瞬间所产生的感悟。这定能帮助他们更好地倡导真正意义上的低碳生活。
诚然，以网络为载体的课程教学，也存在着一些教者须需关注的问题，譬如：交互略少，时间分配不够充足，参与度不均衡等。
一、交互略少
师生间、生生间的交互还不够。虽然学生可以通过网络材料的复制、粘贴，到博客发布相关资料，但学生的文字录入水平不尽相同，信息的发布不够及时；虽然部分答案请同学在查找后直接口头表达，兼顾英语课的多读多说的特点，但总体效果差强人意。
二、时间分配不充足
由于本课容量较大，资料搜集、发布、反馈的部分时间若可以再协调合理些，便能更好地发挥网络的优势，进一步增加学生的知识量，开阔学生的视野。
三、参与度不均衡
在查找资料的过程中，由于每个学生信息素养不同，造成参与度的不均衡，有的学生因为浏览速度慢，或打字速度慢，没能充分思考，只听现成答案，没能及时在论坛上发言，未能体验成就感。
今后为了适应不同能力学生学习的需要，在网络课的设计上，在资源的呈现方式上，应精心构思，力求体现多样性和层次性，除了直接提供整合好的资源外，还应为基础好、能力强和善钻研的学生提供更多的信息来源的指导，如网址、搜索引擎、关键词以及光盘等搜索工具，这样不仅可以拓宽学生的信息渠道，更主要的是能因材施教，提高学生信息采集、分析和利用等能力。借助网站交互、协作、激励、评价和引导探索等功能，学生可以迅速而又准确地了解到自己各个环节的学习状况，从而有效地调节独立、自主、协作学习的速度和强度，使学生能在专题学习网站这块令人愉悦的境地里，纵横驰骋，悉心探索，学会合作，去获取更大的快乐。
高中英语网络课Heal the earth 教案
Teaching aims: Ss are expected to learn the definition, causes, effects and solutions of global warming;
Ss are expected to find the useful information through the Internet;
Ss are expected to know the importance of leading a sustainable low-carbon life for our planet and take action to heal the earth.
Teaching difficulties: How to deal with the time assigned for Ss to surf the Internet and make comments;
How to deal with the interaction between Ts and Ss.
Teaching methods: Multi-media, Internet, blackboard, blog (Http://zzzxlee.blog.163.com).
Teaching procedures:
Step1 Lead-in (5min)
“First, I’d like to show you a video about our earth.” (Video1地球状况)
“As we can feel, our earth is becoming hotter and hotter that we have experienced its frightening power -- damaging weather, like tornado, sand storm, rain storm, floods. What’s more, there has been a series of earthquakes occurring in Haiti, Chile(智利), and Yushu in Qinghai, China, and volcano in Iceland as well since 2010. What’s wrong with our earth?” (PPT)
Ss discuss and answer.
“Yes, it is related to global warming/ climate change. Today, we’ll learn something about global warming and then see what we can do to help our earth.”
Step2 The definition of global warming (5min)
“But what is global warming? Please open my blog (Http://zzzxlee.blog.163.com) and find the journal with the title ‘What is global warming’. You’d better surf the Internet through Baidu or Google for the definition and then show your findings in the forum. Before we do that, let me introduce you some rules.”
Rule1 Select the useful information found from the Internet;
Rule2 Write down your findings and explanations in the forum;
Rule3 Use your real name when making comments;
Rule4 Be brave!
Ss start to surf the Internet for the definition of global warming and share the findings in the forum.
Ts select the useful information from the forum and give the definition through PPT.
Step3 The causes of global warming (8min)
“It is said that temperature in the past fifty years is twice as high as that in the past century. But what caused global warming? That’s the next question. Find the journal with the title of ‘The causes of global warming’ Here is a short passage. I’d like you to read it and try to write down the main causes in the forum.”
Ss start to read the material and share the findings in the forum.
Ts select the useful information from the forum and give the two causes of global warming through PPT.
Then Ts show a video on how the 2 greenhouse gases work. (Video2 全球变暖原理)
Step4 The effects of global warming (10min)
Task1
“From the video, we can see that green house gases can stay in the atmosphere for an amount of years ranging from decades to hundreds and thousands of years. No matter what we do, global warming is going to have some effects on Earth. Here are 2 websites recommended for you to find out the effects of global warming. (http://www.sharenator.com/5_Deadliest_Effects_of_Global_Warming/, http://www.americanprogress.org/issues/2007/09/climate_100.html). After learning, you can share your findings in the forum. This is task1.
Ss start to read the material from the two websites and share the findings in the forum.
Ts select the useful information from the forum and give the main effects of global warming through PPT.
Task2
“In order to check whether you’ve got the effects, I’d like you to finish task2. Please match the effects of global warming with the right pictures.”
Ss start to do the match and share the answers in the forum.
Ts select the useful information from the forum and give the right answer through PPT.
Step5 The solutions of global warming (15min)
“Facing these，are we just being negative? So what is the solution? Just like what you said, the main cause of global warming is CO2. Can we reduce the amount of CO2? Maybe a low-carbon living is the key. But how to lead a low-carbon life? Ok, I’d like to show you another video to see the action of our world against global warming.” (Video3 Earth hour from the blog)
“This is what the whole world is doing at the very moment. But what can we do in our daily life? Here are some recommendations to get you started at home or offices, driving, even flying in your daily life. Start from the following aspects each day, each week or each month and share your suggestions on how to do it in the forum.”
*Heating (暖气) conservation
*Electricity conservation
*Water savings
*Food and the fridge
*Driving tips
*Flying tips
*At the office/ classroom
Ss start to find the material from the Internet and share their opinions in the forum.
Ts select the useful suggestions from the forum and give the solutions of global warming through PPT.
Step6 Conclusion (2min)
“The issue of global warming is not about what country you are from; it’s about what planet you are from. And it is not about switching off lights for only one hour once a year; it’s about working together to create a sustainable low carbon future for our planet each day. So, take action from now on! Finally, let’s finish our class in the song ‘Heal the world’ by Michael Jackson. Try to sing together.”
Ss sing together to the music.
作者单位：江苏省震泽中学