Unit4 Section A（3a-3d）教学设计 2025-2026学年人教版八年级英语下册

课题 Unit 4 The Wonders of Nature Section A (3a-3d) 学段 初中 年级 八 课型 阅读＆听说课 课时 2 学科 English 单元 主题分析 本单元属于“人与自然”范畴，涉及“世界主要国家的名称、地理位置与自然景观”子主题内容，围绕“自然奇观”这一核心主题展开，引导学生探索人类与自然之间的联系，旨在帮助学生通过学习地理事实、比较著名地点、运用大数字描述自然现象，最终理解并表达人与自然的情感及精神联结，体现了从语言学习到自然意识培养的综合教育目标。 文本解读 What:本课时是人教版新版八年级下册第四单元The Wonders of Nature的第二课时，通过一段对话引导学生认识世界著名河流的基本信息。主要内容包括介绍中国的长江、黄河以及非洲的尼罗河，涉及它们的长度、地理特征、文化意义及别称；通过表格填写的形式，帮助学生提取、整理并归纳关键信息；最后通过角色扮演和拓展对话，迁移运用所学语言，谈论中国其他地理特征，如沙漠等。 Why:本课时的设计旨在帮助学生从实际对话中学习地理知识，培养信息提取与整合能力。通过对比不同河流的长度、位置及文化意义，引导学生理解河流与文明发展的关系，增强文化认同与环境保护意识。角色扮演和拓展对话环节则鼓励学生主动运用所学语言进行表达，提升口语交际能力与知识迁移能力。 How:本课时以对话文本为载体，结合阅读、听力与口语任务展开教学。学生通过阅读对话找出河流信息、完成表格归纳，训练信息定位与逻辑整理能力；听力与角色扮演活动强化语音语调模仿和对话复现；最后的拓展对话则创设真实交际情境，引导学生围绕中国地理特征进行问答交流，实现语言知识与文化知识的融合运用。 学情分析 1.已有知识经验 学生在小学阶段已接触过部分中外地理常识，对河流、沙漠等自然地理概念有初步认知。部分学生可能通过课外阅读或纪录片，对长江、黄河、尼罗河等世界著名河流的名称和基本特点有所了解。 2.潜在学习难点 学生可能不熟悉河流长度、重要性等抽象信息的英文表达方式，在组织句子时容易混淆数字与单位，或难以流畅表达河流的历史文化意义。 3.教学支持建议 搭建语言支架，提前呈现并操练关键句型（如“It is... kilometres long.” “It is important because...”），提供常用形容词和地理术语词汇表，帮助学生组织语言。 教学目标 语言 能力 Students will be able to understand, identify, and extract key information (names, lengths, countries, significance) about major rivers (the Yangtze River, the Yellow River, the Nile River) from a dialogue. 文化意识 Students will understand the cultural and historical importance of the Yellow River as China's "mother river" and its role in the development of ancient Chinese civilization. 思维品质 Students will exercise logical thinking by understanding cause-and-effect relationships, such as why the Yellow River is yellow and how rivers contributed to ancient civilizations. 学习能力 Students will develop strategies for expanding topic-related vocabulary and using language scaffolds to support communication in a new but related context. 教学 重难点 教学重点 Students will be able to use comparative and descriptive language to talk about geographical features. 教学难点 Students will be able to conduct a simple dialogue about geographical features in China, using learned vocabulary and sentence patterns. 教学过程设计 教学环节 教师活动 学生活动 设计意图 Step 1 Lead-in 1.Teacher shows a short, captivating video clip featuring powerful aerial shots of 2-3 famous world rivers (eg, the Amazon, the Nile, the Yangtze) without any labels or narration. Asks: "What natural feature are we watching? What comes to your mind when you see these? 2.Teacher writes key student answers (eg, "river," "long," "big," "blue," "important") on the board in a mind map format. 1.Students watch the video attentively. 2.Respond to the teacher's questions with words or short phrases. 通过视频导入，能迅速吸引学生注意力，激发他们对本课主题的兴趣和已有图式。开放式提问和思维导图旨在激活学生已有的相关词汇和背景知识，为接下来的语言输入做好铺垫，并营造轻松、积极参与的课堂氛围。 Step 2 Pre-reading 1.Teacher presents key proper nouns and numbers: "Yellow River (Hukou Waterfall), Yangtze River, Nile River, 6,300 km,5,464 km, 6,671 km." Uses world map or simple icons on the board to locate them roughly. 2.Teacher presents key sentence structures: "It is... kilometres long. It is the longest/second longest... in... It helped... develop. We call it..." Students listen, repeat the key names and numbers.Try to locate the rivers on the mental map. 在进入主文本前，有目的地输入关键专有名词、数字和核心句型，能有效扫除学生的阅读障碍。结合地图的视觉支持帮助学生建立地理概念。 Step 3 While-reading Work on 3a Fast reading 1.Teacher asks students to read the conversation silently for the first time and underline the three river names. 2.Teacher leads students to check answers quickly. Work on 3b Careful reading 1.Teacher guides students to read again carefully. Then asks students to complete the table individually or in pairs. 2.Teacher projects the table on the screen and invites one student to complete it, then leads students to correct together. 3.Teacher asks deeper questions:"Why is it called the Yellow River? Why do we call the Yellow River our 'mother river'? What is similar between the Nile and the Yellow River?" Language points Teacher lets students read the conversation as a whole, then asks them to come up the points they don’t understand, teacher explains the important knowledge points and gives examples to them: ①It travels the farthest and is about 6,300 kilometres long. ②Both the Nile and the Yellow River helped ancient civilizations to develop. ③We should protect them by all means. 1.Students read and underline the three rivers. 2.Students check answers quickly. 3.Students read again and fill in the table. 4.Students correct answers together. 5.Students answer the comprehension questions by referring back to the conversation. 6.Take notes about the knowledge points. 采用任务型阅读模式，分层次处理文本。第一次阅读完成简单查找任务，获取主旨信息，建立信心。第二次阅读进行细节信息提取与归纳，通过表格整理训练学生的信息筛选与逻辑加工能力。最后的理解性问题引导学生深入文本，思考文化内涵与河流的共性，将语言学习与内容理解、思维训练相结合。 教师通过向学生讲解对话里的知识点，增加学生的语法储备，为做题铺路。 Step 4 Post-reading Work on 3c 1.Teacher plays the recording of 3a, asks students to follow the reading, paying attention to the intonation and tone. 2.Teacher models role-play with a student volunteer, emphasizing tone and emotion.Teacher walks around, monitors, and provides help if needed. 3.Teacher invites several pairs to role-play the conversation, then gives some positive feedback. 1.Students listen to the audio carefully, following the conversation. 2.Students practice reading the conversation aloud, trying to imitate the tone. 3.Some pairs volunteer to perform the role-play in front of the class. 听力输入为学生提供了地道的语音语调示范，有助于改善学生的口语流利度。角色扮演活动是重要的语言输出和内化环节。在理解文本的基础上进行表演，能增加趣味性，让学生在相对真实的交际情境中运用本课核心句型和词汇，提升口语表达的自信。 Step 5 Production Work on 3d 1.Teacher introduces the extension task 3d and provides a "Geography Help Desk" -- a slide or handout with pictures and key words of Chinese geographical features. 2.Teacher models the start of an extended dialogue with a student: "Could you tell me more about China?" "Sure! What would you like to know?" "What's the highest mountain in China?" (using the help desk for answer). 3.Teacher asks students to work in pairs to create and practice their own new dialogue, choosing at least one new feature from the "Help Desk." 1.Students learn the vocabulary/ phrases from the "Geography Help Desk." 2.Students observe the teacher's demonstration. 3.Students create a new dialogue based on the model. 4.Some pairs present their creative dialogues. 这是本课的高阶输出和知识迁移环节。创设“地理信息台”提供支架，有效解决了学生因词汇不足而无法拓展对话的难点，确保活动可行性。教师示范明确任务要求。学生通过创编新对话，将本课所学的问答句型、描述性语言应用到关于中国其他地理特征的谈论中，实现了语言的迁移创新运用，同时拓宽了文化知识面，提升了综合语言运用能力和合作学习能力。 Step 6 Summary 1.Teacher hosts a quick, interactive quiz using flashcards with river names. Students must match each river to its length, country, and importance. 2.Teacher leads a short, whole-class discussion: “Why should we protect rivers?” Has students share one simple action to help protect waterways. 1.Students review what they have learned about three rivers. 2.Students discuss and present simple ideas in English. 本节课的总结环节旨在巩固学生对河流知识的理解，并提升英语口语表达与协作能力。兼顾趣味性与教育性，帮助学生在真实的语言情境中运用所学，同时增强对地理特征及环境保护的意识。 Step 7 Homework Level A:Write a short paragraph (4-5 sentences) introducing the Yellow River according to the conversation 3a. Level B:Imagine you are a tour guide. Write a short dialogue (4-6 lines) between you and a tourist. Introduce one of the rivers from the lesson. Use the model: -Tourist: "What river is this?" -Guide: "This is the... It's about... km long. It's very important because..." Level C:Write a paragraph to convince your classmates why it is important to learn about major world rivers. Use at least two reasons and mention one specific river from the lesson as an example. 本分层作业旨在满足不同学习水平学生的需求，确保所有学生都能在原有基础上获得提升。整体设计体现了从识记、理解到应用、分析的思维层级递进，兼顾语言能力与学科内容的融合，使作业成为课堂教学的有效延伸和个性化学习的工具。 板书设计 Unit 4 The Wonders of Nature Section A (3a-3d) River Country Length Importance The Yellow River China 5464km Helped ancient civilization develop; "mother river" of China The Yangtze River China About 6300km the Longest river in China The Nile River Egypt 6671km the longest river in Africa; important in Egypt's history 教学反思 1、 成功之处: 1.跨学科融合自然流畅:将地理知识与英语语言学习有机结合，学生在学习语言的同时拓展了知识面。部分学生能主动补充课外了解的河流信息。 2.文化意识有效渗透:通过"母亲河"的概念和古代文明发展的讨论，学生不仅学习语言知识，更理解了河流的文化象征意义，部分学生在讨论中能联系本地河流谈保护意义。 二、存在问题: 1.时间分配有待优化:课堂前半部分理解对话内容耗时稍长，导致后续3d环节的创造性对话拓展时间不足，多数小组只能完成1-2轮对话交换。 2.评估方式相对单一:课堂反馈主要依赖教师口头评价和少数学生展示，缺乏系统的同伴互评工具或简短的书面检测，难以全面掌握每个学生的具体掌握情况。 三、改进措施: 1.优化教学流程:要求学生课前查找一条著名河流的3个关键事实；将细节查找活动与表格填写合并为10分钟小组竞赛；为3d对话拓展预留至少12分钟，并提供句型支架和词汇银行。 2.完善评估体系:引入同伴评价表；建立学习档案，收集学生的河流信息卡、对话脚本等作品。 学科网（北京）股份有限公司 $