资源简介

Unit 5 Water is life
Cross-curricular connection教学设计
一、教学内容分析
本单元的主题围绕“水即生命”展开。本课时作为跨学科关联板块，重点探究人体中的水含量及其作用，通过文本阅读、信息整合和知识拓展，引导学生理解水在人体中的重要性及其作用，深化“水是生命之源”的科学认知。通过阅读语篇，学生了解掌握人体不同阶段的含水量比例及变化规律；了解人体每日水分流失的主要途径及补充水分的必要性；识别缺水信号，了解脱水对健康的影响。在此过程中，引导学生关注自身健康，养成科学饮水习惯，增强对健康饮水重要性的认识，培养健康的生活习惯识。
二、语篇分析
【What】 本课时语篇是一篇科普说明文，围绕“水是生命体重要组成部分”这一核心主题，分四部分展开：第一段总述水对所有生物的重要性，以植物和动物数据引入；第二段聚焦人类不同生命阶段和不同性别的体内水分占比差异，并解释了男女身体含水量不同的原因；第三段说明人体每日水分流失的途径以及给出补水量建议；第四段强调在高温状况或运动时，如果水分过分流失会产生何种后果，并提出警示。 【Why】 语篇通过详细介绍水在生物体内的重要性以及人体水分流失的途径，强调了保持水分充足和平衡对健康的必要性。语篇意在通过客观数据与生活化场景帮助学生建立科学认知，认识到水对于生命体的重要性，认识到水是维持生命的基础，提醒学生培养良好的饮水习惯，提升健康意识。 【How】 该语篇结构清晰，首先介绍了水对于生命体的重要性，接着讲述了不同人体水分比例的差异，然后详细说明了人体水分流失的途径和补充建议，最后聚焦具体场景，说明脱水危害并给予明确建议。文章使用了具体的数字和数据来支持论点，如人体水分比例、每天的水分流失量等，使内容更具说服力。此外，文章还通过列举日常生活中的例子使得语篇内容更易被理解。最后，语篇还将建议具体化，如每天饮用2-3升水，并在运动或高温环境下及时补充水分，具有很强的实用性和指导性。
三、学情分析
学生已学习本单元前几课时内容，熟悉“水即生命”主题，积累与水相关的基础词汇，能够简单描述水对生命体的重要性。学生对健康生活方式有一定生活经验，能够结合个人体验理解部分文本内容。然而，学生对人体中水的具体含量及其在不同生长阶段的变化认知较为模糊，对通过尿液和汗液等方式流失的水分及其对身体的影响缺乏系统性理解。此外，学生可能难以将水与生物学知识相结合，跨学科思维尚未形成。在词汇方面，学生因相关词汇缺乏而无法准确表达水在人体中的作用和水对人体的重要性。通过本课的学习，学生不仅能掌握与人体水分相关的语言知识，还能将生物学知识融入英语学习，从而让学生进一步认识到水对人体的重要性，关注自身健康，培养科学饮水习惯。
四、教学目标
通过本课时学习，学生能够： 1. 读懂文章，获取关键信息，理解水对于人体的重要性以及人和动物如何依赖水分来维持健康。 2. 综合运用所学知识写一篇水与人体关系的小短文。 3. 通过学习水对于生命体的作用和意义，强化科学饮水意识，提升健康意识。
五、教学重难点
【重点】 读懂文章，获取关键信息，理解水对于人体的重要性以及人和动物如何依赖水分来维持健康。 【难点】 综合运用所学知识写一篇水与人体关系的小短文。
六、教学活动设计
环节一：学生根据已有知识选择正确答案，导入话题。（5 mins） 教师引导学生根据已有知识选择正确答案。
教学活动 活动层次 效果评价
Students think about two questions and choose the correct answers. 学习理解之感知与注意 观察学生回答与互动表现，判断学生对植物含水量和新生儿含水量是否有一定了解。
环节设计意图：通过导入的内容，引出这节课的学习内容，为后面的教学做铺垫，同时让学生能够对本堂课的教学感兴趣。
环节二：完成不同层次的阅读任务，掌握文本大意、关键信息。（20 mins） 教师引导学生完成不同的层次的阅读任务，获取文本的大意和关键信息，进一步了解人体中的水。
教学活动 活动层次 效果评价
Students scan the passage and answer the question. Students read the passage and complete the notes. Students read the passage and answer the questions. 学习理解获取与梳理、概括与整合 观察学生能否通过阅读语篇获取文章大意和关键信息，完成阅读任务。此外，通过学生的活动反馈，判断学生是否对人体中的水有进一步认识。
环节设计意图：根据学生参与课堂活动情况，评价学生是否能具备获取文章大意及关键信息的能力，判断学生综合信息和整合信息的能力。
环节三：看图片，思考问题，拓展知识。（10 mins） 教师引导学生看图并思考水在人体中的其他作用以及日常不良饮水习惯有哪些，进一步拓展相关知识。
教学活动 活动层次 效果评价
Students think about two questions and then answer them. 学习理解获取与梳理 通过学生的活动反馈，判断学生对水在人体中的其他作用以及日常不良饮水习惯是否有一定了解，教师需适当做补充，帮助学生扩展知识。
环节设计意图: 学生结合生活体验发表看法，教师适当做补充，帮助学生拓展更多关于人体与水的知识，加深学生人体与水关系的认识。在回答哪些是不良饮水习惯的环节，引导学生反思自身饮水习惯，进而养成科学饮水习惯，关注自身健康。
环节四：完成写作任务，实现知识的内化和运用。（10 mins） 教师引导学生思考问题并完成写作任务，实现知识的内化和运用。
教学活动 活动层次 效果评价
Students write a short composition about the relationship between water and the human body. Students share their compositions. 应用实践之内化与运用 观察学生的作文，判断学生能否掌握了与人体中的水，水对于人体的重要性以及饮水习惯等相关的语言知识并能流畅表达出来。
环节设计意图: 通过写作活动，判断学生能否掌握了与人体中的水，水对于人体的重要性以及饮水习惯等相关的语言知识并能流畅表达出来，能否实现知识的内化和运用。
作业与拓展 1. Find out more facts about how water helps our bodies work. 2. Design a personal water-drinking schedule for one day. Present your plan to the class. 3. Work in groups to make a poster to call on people to develop good drinking habits.
4 / 4(共17张PPT)
Unit 5
Water is life
Cross-curricular connection
英语沪教版（2024）七年级下册
Learning objectives
目录页标题
通过本课时学习，学生能够：
1. 读懂文章，获取关键信息，理解水对于人体的重要性以及人和动物如何依赖水分来维持健康。
2. 综合运用所学知识写一篇水与人体关系的小短文。
3. 通过学习水对于生命体的作用和意义，强化科学饮水意识，提升健康意识。
重点
Think and choose
What percentage of a cucumber is water
A. 65% B. 75% C. 85% D. 95%
Think and choose
What is the percentage of water in our body weight when we are born
A. 30%-40% B. 50%-60% C. 70%-80%
Let’s find out more facts about water in the human body!
Scan and answer
What is the main idea of the passage
It mainly introduces the significance of water for living things and water in the human body.
Read and complete
Read the passage and complete the notes.
about 70%-80%
about 60%
about 55%
1.5
0.5
Read and answer
Q1: Why do women usually have less water in their bodies than men
Q2: How much water should adults drink every day to stay healthy
Women usually have more body fat than men.
They need to drink about 2-3 litres per day to stay healthy.
Read and answer
Q3: Why do we sweat
Q4: What will happen if we lose more than 10% of our body weight in water
To help our bodies cool down.
We will feel ill.
Think and answer
What else does the body use water for
It keeps your mouth wet and washes away dirt on your eyes.
Water in our blood (血液) carries nutrients (营养物质) and oxygen (氧气) to cells throughout the body.
Think and answer
What else does the body use water for
Water helps remove (排出) waste (废物) from the body through urine and sweat.
Water keeps joints (关节) lubricated (润滑) so they can move smoothly.
Think and answer
Some people don’t drink enough water every day.
Some people drink soda water or fruit juice instead of water.
Some people wait until they feel very thirsty to drink water.
What are bad drinking habits
Think and answer
Some people drink too much water quickly instead of sipping (小口喝) it slowly.
Some people drink too much water right after eating meals.
Some people drink water that is too hot or too cold.
What are bad drinking habits
Write a composition
Write a short composition about the relationship between water and the human body.
Introduce water in the human body and explain why people need water.
List some bad drinking habits and the disadvantages.
Call on people to develop good drinking habits and keep their bodies healthy.
Share your composition
The Importance of Water to the Human Body
Water is like fuel for the human body. Just as a car cannot run without gasoline, our bodies cannot work properly without water. In fact, about 60% of our body weight is water. Water helps carry nutrients, control body temperature, and remove waste. Without enough water, people may feel tired, get headaches, or even face serious health problems.
However, many people have bad drinking habits. Some wait until they feel thirsty to drink water. Others replace water with sugary drinks like soda or juice. Drinking too much water at once is also unhealthy. It may hurt your kidneys(肾). These habits can harm our bodies.
To stay healthy, we should develop good drinking habits. First, drink enough water every day—6-8 glasses. Second, drink small amounts of water regularly instead of waiting until you’re thirsty. Third, choose clean water instead of sweet drinks. Take a water bottle with you or set alarms. These can help you develop good habits.
In conclusion, water is important to life. Let’s value this “invisible hero”(隐形英雄) in our bodies by drinking wisely. Start today, and your body will thank you with better energy and health!
Summary
talk about water in the human body.
realize the importance of developing good drinking habits to keep my body healthy.
know more facts about water in the human body.
2
3
1
After learning this lesson,
I can
Homework
1. Find out more facts about how water helps our bodies work.
2. Design a personal water-drinking schedule for one day. Present your plan to the class.
3. Work in groups to make a poster to call on people to develop good drinking habits.
Bye-bye!

展开更多......

收起↑