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Unit 8 I love nature!
第6课Time on the earth
一、教学内容分析
本课时为跨文化交际阅读课，主要教学内容聚焦于地球的漫长历史演变。通过将地球 46 亿年的历史浓缩为一天，生动展现不同时段的关键事件，如午夜的火山爆发、凌晨生命在海洋底部诞生、傍晚水和阳光为生命供能、夜晚不同生物及恐龙的出现，直至人类在最后时刻登场。在教学活动上，设置了阅读判断、完成表格等练习，还安排小组讨论地球与人类的关系、未来世界走向以及个人保护地球的行动，同时引入世界地球日相关内容。引导学生认识到人类在地球历史中的短暂存在，从而培养学生尊重自然、保护地球的责任感和使命感。
二、语篇分析
【What】 本课时围绕地球历史展开，以时间为线索，描述地球从午夜火山爆发开始，历经生命在海洋出现、水和阳光为生命供能、植物生长、不同生物诞生、恐龙登场，到人类出现的过程。同时涉及世界地球日相关内容，引导思考地球与人类关系、未来世界及保护地球的行动。 【Why】 语篇旨在让读者了解地球漫长历史和生命演化，明白人类在地球历史中出现时间极短。通过学习，培养读者对地球的敬畏之心，引发对地球与人类关系的思考，增强环保意识，鼓励在世界地球日及日常生活中采取行动保护地球，促进可持续发展。 【How】 语篇采用叙述方式，按时间顺序组织内容。运用比喻手法，将地球历史浓缩为一天，使抽象内容形象化。设置多种学习任务，如判断、填表、讨论等，调动读者积极性，促进互动学习。读后学生对世界地球日话题展开讨论，增强保护地球的责任感。
三、学情分析
学生已具备一定英语基础，能理解关于地球历史及环保主题的简单文本，但对文中一些专业词汇和长难句理解可能存在困难。在知识储备方面，对地球演变和环保知识有一定认知，但缺乏系统梳理。多数学生具备一定阅读能力,对地球相关话题感兴趣，愿意参与讨论并表达自己对保护地球的看法，具有培养环保意识和社会责任感的积极条件。
四、教学目标
通过本节课的学习，学生能够： 通过阅读活动，获取梳理与地球历史演变相关的信息； 通过小组合作，讨论和分享关于保护地球的具体行动； 运用所学词汇和语法结构，表达与地球与人类关系话题的观点； 培养学生关注环保，激发保护地球的责任感和行动力。
五、教学重难点
【重点】 通过阅读活动，获取梳理与地球历史演变相关的信息； 通过小组合作，讨论和分享关于保护地球的具体行动。 【难点】 通过不同层次的阅读活动，梳理地球历史演变的关键事件； 将保护地球的责任感转化为实际行动，树立正确的生态价值观。
六、教学活动设计
环节一：观察图片，引发探讨，激发兴趣，导入话题。（5 mins） 学生们通过观察图片，与同伴围绕地球年龄、恐龙时代及人类出现时间展开讨论，为后续阅读地球相关文章做铺垫,激发他们对本课话题的兴趣。
教学活动 活动层次 效果评价
Students look at the pictures and talk about the questions with their partners. How old is the Earth What do you know about the age of dinosaurs (3)When did humans appear Students think about the questions and will read a passage about the earth. 学习理解之感知与注意 观察学生讨论问题的情况，了解学生的已知和未知，鼓励学生积极参与本课时话题。
环节设计意图：通过直观的图片展示和问题讨论，迅速吸引学生的注意力，激发对地球历史主题的兴趣，并引出后续教学内容，使学生投入到阅读地球相关文章中去。
环节二：阅读篇章，深入理解文本，讨论主题。（25mins） 学生阅读文章，通过判断正误、找段落大意、选择答案、回答问题等方式，对文本进行不同层次的阅读和理解。学生再次阅读文本，完成表格，加深对地球历史相关信息的梳理。最后学生小组合作，就地球与人类的关系、世界未来走向以及保护地球的做法展开讨论。
教学活动 活动层次 效果评价
Students read the passage and write true or false. Students read the passage and find out the main idea of each paragraph. Students read para.1 and choose the best answer. Students read para.2 and finish the tasks. Students read the passage again and complete the table. 学习理解之获取与梳理、概括与整合 观察学生完成阅读任务的情况，评估对文本细节和整体结构的理解程度。对完成学习任务有困难的学生给予帮助。
Students work in pairs. Discuss the questions. A What’s the relationship between the earth and humans B What will happen to the world in the future C What will you do to protect the earth 应用实践之描述与阐释、内化与运用 关注学生在小组讨论中能否运用所学知识清晰阐述观点，与小组成员互动交流是否顺畅。对积极表现的同学给予表扬。
环节设计意图: 通过多种阅读任务，逐步提升学生对文本的精细阅读能力，引导学生深入理解地球历史演变相关内容。小组讨论，促使学生将所学知识与实际思考相结合，培养学生分析问题、交流观点以及树立环保意识的能力，在互动中深化对地球与人类关系的认知。
环节三：小组讨论并分享保护地球的可行活动，增强环保意识。（15 mins） 学生先分组讨论世界地球日的相关内容以及能为拯救地球开展的活动，进一步分享各自的想法。接着小组代表上前展示观点，并发出保护地球、爱护环境的呼吁。
教学活动 活动层次 效果评价
Students talk in groups and share their ideas with their classmates. * World Earth Day is on April 22 every year. * What kind of activities can you do to help save the earth Students talk in groups and present their ideas in the front. Then, evaluate their performances. Students call on people to protect the earth and care about the environment. 应用实践之描述与阐释、内化与运用 迁移创新之批判与评价、想象与创造 观察学生能否围绕拯救地球的活动提出切实可行的想法，表达观点是否清晰、有条理。对积极表现的学生给予表扬，对表述有困难的同学给予鼓励和帮助。
环节设计意图: 小组讨论和分享，促使学生积极思考保护地球的实际行动，激发学生的环保意识，锻炼学生的语言表达和展示能力，同时强化他们对环保重要性的认识，鼓励学生将环保理念转化为实际行动并向他人传播。
作业与拓展 (Required) 1. Read the passage fluently. (Optional) 2. Make a poster about environmental protection, including some practical tips on what we can do to save the earth, and share it with your family and friends.
4 / 4(共20张PPT)
I love nature!
第6课时
Unit 8
Lesson 6
Learning
Learning objectives
通过本节课的学习，学生能够：
1.通过阅读活动，获取梳理与地球历史演变相关的信息；
2.通过小组合作，讨论和分享关于保护地球的具体行动；
3.运用所学词汇和语法结构，表达地球与人类关系话题的观点；
4.培养学生关注环保，激发保护地球的责任感和行动力。
重点
重点
Look and say
Look at the pictures and talk with your partners.
Do you know how old the earth is
What do you know about the age of dinosaurs
When did humans appear
Look and say
A long, long time ago, there was a magical big bang in the universe. After that, over a long period, the earth gradually formed. The earth at the very beginning was not like it is now.
Let’s read a passage about Time on the earth.
Think about the questions and you’ll read a passage about the earth.
Read and write
Read the passage and write true (T) or false (F).
Our planet is about 4.6 billion years old. According to the latest research, humans appeared only 2.5 million years ago. If we shorten this into one day, humans appeared in the last two minutes. How did that happen
Midnight on the earth started with a burst of volcanoes. Around
3 to 4 a.m., life appeared at the bottom of the oceans. At 6 p.m.,
water and sunlight began to provide energy for life. All kinds of
plants started to grow. At 9 p.m., the earth gave birth to different
creatures. At 11:30 p.m., dinosaurs appeared. They were one of the largest creatures in the history of the earth. The last 20 minutes of the day was the “busiest” time: after the age of dinosaurs, it was the age of all kinds of animals, including humans.
A The earth has a long history. （ ）
B Dinosaurs arrived last on the earth. （ ）
T
F
Read and answer
Read the passage and find out the main idea of each paragraph.
Our planet is about 4.6 billion years old. According to the latest research, humans appeared only 2.5 million years ago. If we shorten this into one day, humans appeared in the last two minutes. How did that happen
Midnight on the earth started with a burst of volcanoes. Around 3 to 4 a.m., life appeared at the bottom of the oceans. At 6 p.m., water and sunlight began to provide energy for life. All kinds of plants started to grow. At 9 p.m., the earth gave birth to different creatures. At 11:30 p.m., dinosaurs appeared. They were one of the largest creatures in the history of the earth. The last 20 minutes of the day was the “busiest” time: after the age of dinosaurs, it was the age of all kinds of animals, including humans.
①
②
Compare the earth’s history and human appearance time and raise a question.
List major events and life appearance in a “one-day” timeline.
Read and answer
Read para. 1 and choose the correct answers.
Our planet is about 4.6 billion years old. According to the latest research, humans appeared only 2.5 million years ago. If we shorten this into one day, humans appeared in the last two minutes. How did that happen
①
1. How does the writer begin the text
2. How old was our planet when humans appeared
A. About 2.1 billion years old. B. About 2.1 million years old.
C. About 4.5975 billion years old. D. About 4.5975 million years old.
A. By telling a story. B. By showing facts.
C. By giving a saying. D. By listing the numbers.
Read and answer
Read para. 2 and finish the tasks.
Midnight on the earth started with a burst of volcanoes. Around 3 to 4 a.m., life appeared at the bottom of the oceans. At 6 p.m., water and sunlight began to provide energy for life. All kinds of plants started to grow. At 9 p.m., the earth gave birth to different creatures. At 11:30 p.m., dinosaurs appeared. They were one of the largest creatures in the history of the earth.
The last 20 minutes of the day was the “busiest” time: after the age of dinosaurs, it was the age of all kinds of animals, including humans.
②
2. Circle the time in this paragraph.
1. It was shortened into one day. So this part was organized in ________order.
time
3. When did life first appear on the earth
Around 3 to 4 a.m..
4. When did humans appear
In the last 20 minutes.
Read and complete
Read the passage again and complete the table.
Time What happened
midnight burst of volcanoes
around 3 to 4 a.m.
life appeared
at 6 p.m.
water and sunlight began to provide energy;
plants started to grow
at 9 p.m.
the earth gave birth to different creatures
at 11:30 p.m.
dinosaurs appeared
the last 20 minutes
the age of all kinds of animals, including humans
Work in pairs
Discuss the questions with your partner.
A What’s the relationship between the earth and humans
B What will happen to the world in the future
C What will you do to protect the earth
A What’s the relationship between the earth and humans
B What will happen to the world in the future
C What will you do to protect the earth
A What’s the relationship between the earth and humans
The earth is humans’ home. It gives us air, water and land to live on.
What we do can change the earth, either in a good or bad way.
B What will happen to the world in the future
If we don’t care about the environment, there will be big problems.
But if we try to protect the earth, the world will be better.
C What will you do to protect the earth
I will recycle things to make less rubbish, and save water and electricity.
I’ll take buses or ride bikes more often instead of driving.
Talk and share
Talk in groups and share your ideas with your classmates.
It is an event that encourages people to save the earth.
Useful expressions
We can....
We should...
We should not....
Do you know World Earth Day is on April 22 every year
What kind of activities can you do to help save the earth
Talk and share
It’s time for us to take actions to help save the earth. Here are some things we can do in our daily life.
First, we should save resources. For example, turn off the tap when we don’t use water, and turn off lights when leaving a room. Second, we can use reusable things like water bottles and bags to reduce waste. Also, we should not litter. Throwing rubbish anywhere will pollute our environment.
By doing these simple things, we can help save our world.
Talk in groups and present your ideas in the front.
Talk and share
Present your ideas and evaluate your performance.
It’s everyone’s duty to help save the earth. We can do many things in our daily life.
We should take public transportation like buses or subways instead of asking parents to drive us everywhere. This can reduce air pollution. We can also sort our garbage at home, putting recyclable things like paper and plastic in one bin. We can plant some flowers at home, too.
Let’s encourage our family and friends to join us!
How many stars can you get 1. Use accurate words.
2. Share practical ways.
3. Interact actively.
4. Express fluently.
Total stars
The earth is our home. Let’s take good care of it with love, keeping it beautiful and full of different living things. Enjoy a beautiful planet!
Summary
come up with various practical ways to protect the earth.
describe the long history of the earth.
2
1
After learning this lesson,
I can
3
discuss the relationship between the earth and humans.
Homework
(Required)
1. Read the passage fluently.
(Optional)
2. Make a poster about environmental protection, including some practical tips on what we can do to save the earth, and share it with your family and friends.
Bye-bye!

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