Unit 7 How do things change(教学设计)-2025-2026学年沪教版英语四年级下册

2026-02-01
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Unit 7:How do things change? 单元整体分析 单元教学内容 本单元围绕“How do things change?”核心问题展开,引导学生认识物质的三种状态(liquid, solid, gas)及相关词汇(sugar, salt, cream 等),了解物质形态变化的现象和条件,包括融化、结冰、沸腾等。掌握核心词汇(物质状态类、材料类、动作类)和句型(“Shall we...?” “Let's... ”),通过实验、观察、合作等活动,感受物质变化的乐趣,激发对自然科学现象的探索兴趣。 单元学习遵循“激活物质状态主题—探究变化案例+语法融合—交际运用—拓展升华”的逻辑链,各板块功能如下: 板块 内容 功能 Get ready 激活物质状态类和材料类核心词汇(liquid, solid, gas, sugar 等),通过“看图指认”“分类匹配”建立“物质状态—具体物质—变化动作”的关联,初步感知物质变化的基本动作(melt, heat, mix 等)。 输入铺垫功能:借助生活实例和直观教具,激活学生对物质状态的已有认知,呈现核心词汇和话题,搭建“物质变化”认知框架。 Explore 通过“Let's make ice cream!”的文本,讲述学生在派对前因冰淇淋融化,在老师指导下用盐、冰、奶油等材料自制冰淇淋的故事;同步融入建议句型“Shall we...?” “Let's... ”,掌握提出建议和回应的表达。 认知+语言形式融合功能:既引导学生从“识别物质状态”进阶到“理解变化条件与过程”,又同步完成建议句型的感知、理解与初步操练,为后续提出实验建议提供语言工具。 Communicate 通过“匹配物质变化现象与原因”“模拟实验建议交流”“仿写食物混合物制作”等活动,将所学知识转化为实际交流能力,解决“如何用英语提出建议并描述物质变化”的问题。 语言输出功能:创设真实实验和交流情境,让学生运用词汇和句型进行表达、合作与书写,实现知识向能力的转化。 Extend 通过“What is our world made of?”的短文,系统介绍物质的三种状态及相互转化的条件(如水结冰、冰融化、水沸腾成水蒸气),引导学生了解物质变化的普遍性,渗透“生活中处处有科学”的理念,鼓励学生探索更多物质变化现象。 主题升华与价值引领功能:将“单一变化案例”延伸到“系统物质认知”,让学生感受科学的趣味性,培养科学探究精神和观察能力。 单元教学目标 语言能力目标 能听、说、读、写物质状态类和材料类核心词汇;能正确使用建议句型“Shall we...?” “Let's... ”提出建议并回应;能结合实验场景,简单说明物质变化的过程和条件(如“We add salt to ice to freeze the cream.”);能仿写简单的食物混合物制作短文。 思维品质发展目标 通过分析物质变化的条件、过程和结果,培养观察、推理、归纳思维;能从“材料”“动作”“条件”等角度思考物质变化的可能性;发展提取文本关键信息、逻辑表达实验步骤的能力。 文化意识目标 感受科学现象的普遍性,了解物质变化在生活中的应用;培养对自然科学的兴趣和探究精神;初步建立“物质可以相互转化”的认知,鼓励大胆尝试和合作实验。 学习策略目标 运用“物质状态—变化条件—结果”思维导图梳理知识;通过小组合作、实验操作、情境模拟等活动实践语言交际;借助句型模板、关键词提示完成写作任务。 教学过程设计 Get ready 教学设计 一、教学目标 1. 听、说、认读词汇:liquid, solid, gas, sugar, salt, cream, melt, heat, mix, freeze, steam。 2. 正确使用句型“What state is it?” “It's a solid/liquid/gas.”询问和描述物质状态;初步运用“Shall we...?” “Let's... ”提出简单建议。 3. 建立“物质状态—具体物质—变化动作”的关联认知(如 ice → solid → melt)。 4. 激发对物质变化现象的兴趣,愿意用英语谈论生活中的变化。 5. 情境任务:制作“物质状态卡片”(含物质图片 + 状态 + 1 句变化描述):“Ice is a solid. It melts when heated.” 二、教学重难点 重点:物质状态和材料词汇的认读与记忆;基础句型“What state is it?” “It's a... ”及建议句型的初步运用。 难点:部分词汇的发音(如 liquid /ˈlɪkwɪd/、solid /ˈsɒlɪd/、gas /ɡæs/);区分物质三种状态的特征及对应的具体物质。 三、教学过程设计 (一)导入:激活经验,建立语境 活动1:Look and classify(看图分类) 过程:① 教师展示不同物质的图片(水、冰、空气、糖、盐、牛奶),让学生观察并尝试分类。② 学生用中文或英文回应分类结果,教师顺势呈现“solid, liquid, gas”三个词汇及对应的物质类别。③ 教师领读词汇,强调发音要点(如 gas 注意 /ɡæs/ 的短音发音,liquid 重音在第一音节)。 语言:T: Look at the pictures. Can you put them into three groups? Ss: 冰、糖、盐一组;水、牛奶一组;空气单独一组。T: Great! They are solid, liquid and gas. Read after me: solid, solid. Ss: solid, solid. 活动2:Talk about familiar changes(谈论熟悉的变化) 过程:① 教师示范:“Ice is a solid. It melts in the sun. It becomes water, a liquid.” ② 学生结合自身经验,分享生活中见过的物质变化(如糖溶解在水里、蜡烛融化)。③ 教师引导学生用英语关键词回应,如学生说“糖放在水里会化”,教师补充:“Sugar is a solid. It mixes with water.” 语言:T: What changes have you seen? S1: 蜡烛会融化。T: Correct! Candle is a solid. It melts when heated. Read after me: melt, melt. (二)新知呈现:词汇与句型输入 活动1:Look, point and say(看图指说) 过程:① 课件按顺序呈现物质状态图片、对应物质及变化动作(如 solid 配 ice 图片和 melt 动作图),播放录音。② 学生边听录音,边快速指出对应的图片,模仿变化动作。③ 分组竞赛:教师展示物质词汇,小组抢答对应的状态和变化动作,答对加分。 语言:T: Look at the word “liquid”. Point! Ss: (指向液体图片)liquid! T: What's an example of liquid? Ss: Water! T: What can water do? Ss: (模仿结冰动作)Freeze! 活动2:Match states, substances and actions(状态、物质与动作匹配) 过程:① 课件呈现物质状态词汇(solid, liquid, gas)、物质词汇(ice, water, steam, sugar)和动作词汇(melt, freeze, boil, mix)。② 学生小组讨论,将三者进行合理匹配(如 solid → ice → melt, liquid → water → boil)。③ 集体核对答案,教师引导学生用句型描述:“Ice is a solid. It melts when heated.”“Water is a liquid. It boils to become gas.” 语言:T: Match the state, substance and action. Let's check: Sugar is a solid. It mixes with water. Correct! Steam is a gas. It comes from boiling water. Yes! 活动3:Role-play - “I'm a Scientist”(角色扮演) 过程:① 教师给学生分发物质卡片(如 ice, sugar, water),学生手持卡片模仿对应的变化动作。② 教师提问:“What state is it? Shall we heat it?” 学生回应:“It's a solid. Yes, let's heat it. It will melt.” ③ 学生两人一组,轮流提问和回应,教师巡视纠错。 语言:T: What state is this? (举起 ice 卡片)S2: It's a solid. T: Shall we put it in the sun? S2: Yes, let's do it. It will melt into water. (做融化动作) (三)输出:练习巩固,表达自我 活动1:Quick response(快速回应) 过程:① 教师说出物质名称,学生快速说出对应的状态(如教师说“salt”,学生说“solid”)。② 教师说物质和动作组合(如“water + freeze”),学生快速做出动作并说句子:“Water is a liquid. Let's freeze it. It becomes ice.” ③ 增加难度:教师提问“Shall we mix sugar and water?” 学生快速回应“Yes, let's do it./Good idea!” 语言:T: “cream”! Ss: liquid! T: “ice + melt”! Ss: (做融化动作)Ice is a solid. Let's heat it. It melts! T: “Shall we boil water?” S3: Yes, let's do it. It becomes steam. 活动2:Draw and introduce(绘画介绍) 过程:① 学生用3分钟画出一种物质的变化过程(如冰融化成水、水沸腾成水蒸气),标注物质状态和变化动作。② 教师巡视,对绘画困难的学生提供简笔画模板。③ 邀请4-5名学生上台展示,用句型介绍:“Ice is a solid. We heat it. It melts into water. Water is a liquid.” 语言:T: Draw a change of a substance. Write the state and action. Show us your picture! S4: Sugar is a solid. We put it in water. It mixes with water. Now it's a liquid. T: Great! Clear and correct. 活动3:Fill in the blanks(填空练习) 过程:① 课件呈现句型框架,学生根据提示填空:“______ is a ______. Shall we ______ it? It will become a ______.” ② 同桌互查答案,教师抽查并点评,强调物质状态词汇和动作词汇的正确搭配。 语言:T: Fill in the blanks. Remember: use the right state and action words. Let's read Lily's answer: “Cream is a liquid. Shall we freeze it? It will become a solid.” Perfect! 四、作业设计 1. Read the words and phrases. 2. Draw a “Substance Change” picture and write 2 sentences: “______ is a ______. It ______ into ______.” Explore 教学设计 一、教学目标 1. 能理解并朗读“Let's make ice cream!”的文本,提取制作冰淇淋的材料、步骤及物质变化等关键信息。 2. 能听懂并运用建议句型“Shall we...?” “Let's... ”提出建议和回应;能结合文本内容,用简单语言说明物质变化的条件(如“Salt makes ice freeze faster.”)。 3. 能感知字母组合“fr”的发音(如 freeze, fruit, friend),能认读含该发音的单词。 二、教学重难点 重点:理解制作冰淇淋的实验步骤和物质变化原理;熟练运用建议句型“Shall we...?” “Let's... ”。 难点:在语境中准确使用建议句型;清晰表达物质变化与条件的关系(如盐对冰的作用)。 三、教学过程设计 (一)热身复习 活动1:词汇与句型回顾 过程:① 课件快速展示物质状态、材料词汇和变化动作图片,学生抢答,教师纠正发音和搭配错误。② 集体操练基础句型:“What state is it? It's a liquid. Shall we heat it? Let's do it.” ③ 过渡提问:“What happens when ice meets salt? Can we make ice cream with ice and cream? Let's find out in the text.” 引出文本主题。 语言:T: “gas”! Ss: gas! T: “Shall we mix salt and water?” Ss: Yes, let's do it. T: Can we make ice cream with ice? Let's read the story. 活动2:Chant 导入 过程:① 播放 Grammar in use 中的歌谣“Let's make chicken soup!”,学生跟唱。② 提问歌谣中的关键信息:“What do they do first?” “Shall they wash the carrots?” 引导学生用建议句型回应。③ 强调歌谣中的句型结构和动作词汇。 语言:T: Listen to the chant. What do they do first? Ss: Wash the pot and chicken. T: Shall they wash the carrots? Ss: Yes, let's wash them. (二)探究文本:冰淇淋制作与物质变化 活动1:Read and answer(问题探究) 过程:① 课件呈现问题:“Why do the students need to make ice cream?” “What materials do they use to make ice cream?” “What do they do first?” “Why do they add salt to the ice?” ② 学生默读文本1分钟,寻找答案,小组讨论后举手回答。③ 教师将关键信息板书在“问题—材料—步骤—变化”表格中。 语言:T: Why do the students need to make ice cream? S1: Because the ice cream in the freezer melts. T: What materials do they use? S2: Cream, sugar, salt, ice, plastic bags and chocolate. 活动2:Read and match(原因与结果匹配) 过程:① 课件呈现原因(The freezer door is open. They add salt to the ice. They shake the bags.)和结果(The ice cream melts. The mixture freezes. They get ice cream.)。② 学生再次阅读文本,将原因与对应的结果匹配。③ 集体核对答案,教师引导学生朗读文本中对应的关键句子。 语言:T: Read the text and match the cause with the effect. Let's check: The freezer door is open. So the ice cream melts. Correct! They add salt to the ice. So the mixture freezes. Yes! 活动3:Find the key sentences(寻找关键句) 过程:① 学生在文本中找出描述制作步骤和物质变化的关键句子(“Mix the sugar and cream. Then put the mixture in a small bag.” “I'm putting salt and ice in the big bag.” “The ice is freezing the mixture!”)。② 教师领读句子,引导学生体会建议句型在实验场景中的用法。③ 学生分组朗读文本片段,模仿语气和情感。 语言:T: Find the sentences about making steps. Ss: “Mix the sugar and cream. Then put the mixture in a small bag. Add some chocolate.” T: Find the sentence about the change. Ss: “The ice is freezing the mixture! We have ice cream!” (三)语法操练:建议句型运用 活动1:Fill in the blanks with suggested structures(用建议句型填空) 过程:① 课件呈现文本中的关键句子,空出建议句型部分(如 “______ make some more ice cream?” “______ put the mixture in a small bag.”)。② 学生独立填空,同桌互查。③ 教师讲解建议句型的用法:“Shall we...?” 用于提出建议,语气较委婉;“Let's... ” 用于提议一起做某事,语气更直接,两者回应均可使用“Sure!/Good idea!”。 语言:T: Fill in the blanks with “Shall we” or “Let's”. Let's check: “Shall we make some more ice cream?” Correct! “Let's put the mixture in a small bag.” Yes! 活动2:Look, ask and answer(看图问答) 过程:① 课件呈现不同的实验场景图片(如混合糖和水、加热牛奶、冷冻果汁)。② 学生两人一组,轮流用建议句型提问:“Shall we mix sugar and water?” 对方回应:“Sure! Let's do it.” ③ 邀请2-3组上台展示。 语言:T: Pair work! Ask and answer with the pictures. Group 1, your turn. S3: Shall we freeze the juice? S4: Good idea! Let's put it in the fridge. It will become ice. 活动3:Role-play - “Make a Food Mixture”(角色扮演) 过程:① 学生分组,每组分配不同的食物制作任务(如制作水果沙拉、酸奶冰沙),列出所需材料。② 学生模拟制作过程,用建议句型讨论步骤,如:“Shall we cut the strawberries first?” “Let's add some yogurt.” ③ 教师巡视,鼓励学生大胆创新表达。 语言:Group 2 (S5): We need bananas and yogurt. Shall we peel the bananas first? S6: Sure! Let's peel them and cut into pieces. S5: Let's mix them in a bowl. S6: Good idea! It will be a delicious banana yogurt. (四)语音学习:字母组合“fr”的发音 活动1:Listen and find(听辨发音) 过程:① 课件呈现含“fr”的单词(freeze, fruit, friend, fresh)及对应图片。② 播放单词录音,学生跟读,感受发音特点(“fr”发 /fr/)。③ 教师用手势辅助记忆(如“fr”双手做“吹风”状,发出 /fr/ 音)。 语言:T: Listen to the words: freeze, fruit. “fr” sounds /fr/. Read after me: /fr/ freeze. Ss: /fr/ freeze. T: /fr/ friend. Ss: /fr/ friend. 活动2:Read and sort(发音分类) 过程:① 课件呈现含“fr”和其他字母组合的单词,学生根据发音将单词分为 /fr/ 类和其他类。② 小组讨论后核对答案,集体朗读分类后的单词,强化发音记忆。 语言:T: Sort the words by their sounds. “freeze” goes to /fr/. “tree” goes to other. Let's read all the words together. 四、总结与作业 课堂总结:教师引导学生回顾本节课核心内容:“Today we learned how to make ice cream and the changes of substances. We can use ‘Shall we...?’ and ‘Let's... ’ to suggest doing things.” 学生集体复述核心句型。 作业设计: 1. Read Explore from Student’s Book 4B on Page 64-65. 2. Write 3 sentences about making a food mixture: “Shall we...?” “Let's... ” “It will... ” Communicate 教学设计 一、教学目标 1. 能运用“Shall we...?” “Let's... ”句型完成对物质变化实验的建议和讨论,准确回应他人的建议。 2. 能根据实验步骤,口头描述物质变化的过程和结果,包含材料、动作和变化现象。 3. 能模仿写作模板,完成一篇简单的“最喜欢的食物混合物”描述短文,语句通顺,信息完整。 4. 培养合作实验和大胆表达的能力,感受科学实验的乐趣。 二、教学重难点 重点:运用建议句型提出实验建议和回应;根据提示仿写食物混合物制作短文。 难点:在交流中清晰表达实验步骤和物质变化;写作中准确使用动作词汇和变化描述。 三、教学过程设计 (一)热身复习 活动1:Review the 句型 过程:① 教师播放物质变化实验的短视频(无声音),学生用句型“Shall we...?” “What happens when...?” 描述和提问。② 邀请1名学生上台模仿实验动作,其他学生用建议句型提问,该学生回答实验步骤和结果。③ 集体点评,纠正表达错误(如动作词汇使用不当、句型结构错误)。 语言:T: Look at the video. Shall we heat the water? Ss: Yes, let's do it. What happens? T: Tom, act like mixing salt and ice. Ss: Shall we add salt to the ice? Tom: Yes, let's do it. It makes the ice freeze faster. 活动2:Listen and number(听力练习) 过程:① 播放 Communicate A 中“Things change!”的听力材料。② 学生根据听力内容,给物质变化的图片排序(如冰融化、水沸腾、糖溶解)。③ 集体核对答案,学生用句型描述:“First, ice melts into water. Then, water boils into steam.” 语言:T: Listen to the tape. Number the pictures. Let's check: What's the first change? Ss: Ice melts into water. Correct! (二)交流准备:明确任务与练习 活动1:Learn the communication task(明确交流任务) 过程:① 课件呈现交流任务:“Make a Food Mixture”,要求小组合作,选择一种简单的食物混合物(如水果沙拉、草莓冰饮),用建议句型讨论制作步骤,分工完成实验并描述过程。② 学生分组讨论,确定制作方案,分配角色(材料准备员、操作员、描述员)。③ 教师提供句型参考:“Shall we prepare...?” “Let's... first. Then... ” “It changes from... to... ” 语言:T: Today we'll make a food mixture. Use the suggested sentences to discuss steps. One student describes the process. 活动2:Practice the communication(模拟交流) 过程:① 各小组进行5分钟排练,教师巡视指导,纠正语言表达和实验步骤逻辑。② 邀请1组进行试交流,其他学生认真观看,评价交流是否流畅、步骤是否清晰。③ 教师针对试交流进行点评,提出改进建议(如描述时加上材料用量:“Let's put two strawberries.”)。 语言:Group 3 (Describer): We'll make a strawberry ice drink. Shall we prepare strawberries, ice and water? Operator: Sure! Let's wash the strawberries first. Describer: Then cut them into pieces. Let's put them in a cup with ice and water. Operator: It's a nice drink! The strawberries mix with water. (三)食物混合物制作交流:展示与互动 活动1:Group communication show(小组交流展示) 过程:① 各小组依次上台进行交流展示,操作员演示制作步骤,描述员用英语描述,时间控制在1分钟内。② 其他学生认真观看,展示结束后可以补充提问(如“Shall we add sugar to it?”)。③ 教师在旁协助,及时纠正明显的语言错误。 语言:Group 4 (Describer): We make fruit salad. Shall we get apples, bananas and yogurt? Operator: Yes, let's peel the apples and bananas. Cut them into pieces. Describer: Let's mix them with yogurt. It's delicious! Ss: (补充提问)Shall we add some honey? Describer: Good idea! Let's add a little honey. 活动2:Guess the change(猜变化) 过程:① 邀请1名学生上台,描述一种物质变化的过程,不直接说出变化名称。② 其他学生用句型“What change is it?” 提问,表演者只能用“Yes”或“No”回应。③ 猜对的学生获得小奖励,继续上台描述。 语言:S1: It's a solid. We heat it. It becomes a liquid. What change is it? Ss: Is it melting? S1: Yes! (四)书面表达:仿写食物混合物介绍 活动1:Analyze the model(分析范文) 过程:① 课件呈现写作模板范文(参考单元写作要求):“My favorite food mixture is tomato and egg soup. First, we cut the tomatoes. Then, we mix them with eggs and water. We heat the mixture. It becomes a delicious soup. It looks red and yellow. I like it very much.” ② 教师引导学生分析范文结构:开头(点明食物混合物名称)— 主体(描述制作步骤)— 结尾(评价外观和口感)。③ 标注范文中的核心句型和关键词(food mixture, first, then, heat, mix)。 语言:T: Read the model. How does it start? Ss: It tells the name of the food mixture first. T: What does it say about the steps? Ss: It uses “first” and “then” to describe. 活动2:Write your favorite food mixture(仿写最喜欢的食物混合物) 过程:① 学生选择自己喜欢的一种食物混合物,参考模板进行写作,字数50词左右。② 教师巡视指导,对有困难的学生提供关键词提示(如 fruit salad: apples, bananas, mix, yogurt, delicious)。③ 学生完成后,同桌互查,纠正语法和拼写错误。 语言:T: Write about your favorite food mixture. Use the model. Remember to use “first, then” and action words. Let's check your partner's work. 活动3:Show and comment(展示点评) 过程:① 邀请3-4名学生上台展示自己的作文,朗读给全班听。② 其他学生认真倾听,给出积极评价(如 “Good! You told us the steps clearly.”)。③ 教师总结共性优点和改进方向(如部分学生遗漏变化描述,需注意加上“It becomes... ”)。 语言:T: Let's listen to Amy's report. She wrote about strawberry ice drink. It's vivid and correct. What a good job! Jack, you can add “It's cold and sweet.” to make it better. 四、总结与作业 课堂总结:教师引导学生回顾交流和写作流程:“Today we made food mixtures and wrote about our favorites. We can use ‘Shall we...?’ and ‘Let's... ’ to suggest, and describe steps with ‘first, then’.” 学生集体复述核心句型。 作业设计: 1. Ask and answer with the sentence structure on Page 68. 2. Revise your food mixture writing and stick a photo of the food (or draw a picture) next to it. Extend 教学设计 一、教学目标 1. 能理解短文“What is our world made of?”的主要内容,提取物质三种状态的特征及相互转化的条件等关键信息。 2. 能运用核心词汇和句型(“... is a solid/liquid/gas.” “It changes into... when... ”)复述短文主要内容。 3. 能参与“How do other things change?”的讨论,用简单理由表达观点(如 “Wood changes into ash when it burns.”)。 4. 激发创新思维,培养对物质变化现象的探索兴趣,理解“物质变化普遍存在”的理念。 二、教学重难点 重点:理解短文内容,掌握物质三种状态的特征及转化条件;运用核心词汇和句型复述短文。 难点:在讨论中清晰表达其他物质的变化现象;将短文知识迁移,进行创新观察和表达。 三、教学过程设计 (一)热身复习 活动1:Review states and changes(回顾状态与变化) 过程:① 课件展示不同物质状态转化的图片(水结冰、冰融化、水沸腾),学生用句型“... is a... It changes into... when... ”描述。② 提问:“What other things can change? How? ” 引导学生用简单英语或中文回答(如树叶变黄、蜡烛燃烧)。③ 引出短文主题:“Today we'll learn about the three states of matter and their changes. Let's read the passage.” 语言:T: Look at the ice. It's a solid. It changes into liquid when heated. T: What other things can change? S1: Leaves change from green to yellow in autumn. 活动2:Predict the passage(预测短文) 过程:① 课件呈现短文标题和物质三种状态的图片,提问:“What do you think the passage will talk about? ” ② 学生自由猜测,教师汇总关键词(solid, liquid, gas, change)。③ 播放短文录音(无文字),验证猜测。 语言:T: The passage is “What is our world made of?”. What do you think it will talk about? S2: It will talk about the three states of matter. T: Let's listen to the tape to check. (二)短文精读:梳理信息与细节 活动1:Read and fill in the chart(阅读填表格) 过程:① 课件呈现表格,包含“物质状态”“特征”“例子”“转化条件”四列。② 学生默读短文,从文中提取信息填写表格(如 solid: hard, ice, melts when heated; liquid: flows, water, freezes when cold)。③ 集体核对答案,教师引导学生朗读对应的句子。 语言:T: Read the passage and fill in the chart. Let's check: Solid is hard. Example: ice. Changes when heated. Correct! 活动2:Answer the questions(问题探究) 过程:① 课件呈现问题:“What are the three states of matter?” “When does water change into a solid?” “When does ice change into a liquid?” “What does water become when it boils?” ② 学生再次阅读短文,寻找答案,小组讨论后回答。③ 教师将关键信息板书:“solid ↔ liquid ↔ gas”,标注转化条件。 语言:T: What are the three states of matter? S3: Solid, liquid and gas. T: When does water change into a solid? S4: When it's cold. It freezes into ice. 活动3:Find the key sentences(寻找关键句) 过程:① 学生在短文中找出描述物质状态特征和转化的关键句子(“Ice and metal are solids.” “Water and milk are liquids.” “Air and steam are gases.” “The water is a liquid. Now it's freezing. It's changing into a solid.”)。② 教师领读句子,引导学生体会物质转化的逻辑关系。③ 学生分组朗读短文,感受语言节奏。 语言:T: Find the sentences about gas. Ss: “Air and steam are gases.” T: Find the sentences about water boiling. Ss: “The water is a liquid. Now it's boiling. It's changing into a gas.” (三)短文巩固:复述与讨论 活动1:Retell the passage with a chart(借助表格复述) 过程:① 学生以小组为单位,根据填写的表格,分工复述短文内容(一人负责一种状态)。② 教师示范复述:“Our world is made of solid, liquid and gas. Ice is a solid. It melts into liquid when heated. Water is a liquid. It freezes into solid when cold and boils into gas when heated.” ③ 邀请1-2组全班复述。 语言:Group 5 (S5): Solid. Hard. Ice, metal. Melts when heated. S6: Liquid. Flows. Water, milk. Freezes when cold, boils into gas. S7: Gas. Invisible. Air, steam. Comes from boiling water. 活动2:Group discussion(小组讨论) 过程:① 课件呈现问题:“What other things change? How do they change? ” ② 学生分组讨论,用中文或简单英语记录想法(如 candle: solid → liquid when heated; bread: soft → hard when left)。③ 每组派代表分享,教师汇总创意想法,鼓励学生大胆观察。 语言:T: Discuss in groups. What other things change? Group 2, share your ideas. S8: Candle is a solid. It becomes liquid when heated. S9: Bread is soft. It becomes hard when it's dry. (四)拓展延伸:实践观察物质变化 活动1:Observe and record(观察与记录) 过程:① 学生分组,利用自带的简单物品(如蜡烛、糖、树叶),观察并尝试引发物质变化(如加热蜡烛、溶解糖)。② 教师巡视指导,鼓励学生结合所学句型描述变化:“The candle is a solid. We heat it. It changes into a liquid.” ③ 各小组展示自己的观察结果,全班交流。 语言:Group 6 (Describer): We have a candle. It's a solid. We light it. It melts into liquid. The liquid becomes solid again when it cools down. 活动2:Talk about my observation(谈论我的观察) 过程:① 学生结合自己的观察,分享感受和想法:“I think it's interesting to watch the candle melt. It changes from solid to liquid and back to solid.” ② 教师给予积极评价,鼓励学生保持观察习惯,发现生活中的更多物质变化。 语言:T: How do you feel about observing changes? S10: It's fun. I want to observe more things around me. T: Great! Matter changes are everywhere. Let's keep observing and exploring! 四、总结与作业 课堂总结:教师引导学生总结短文道理:“Everything in our world is solid, liquid or gas. They can change into each other under different conditions. Let's keep observing and learning about science! ” 学生集体回应。 作业设计: 1. Read Extend from Student’s Book 4B on Page 70. 2. Observe a substance change at home, and write a short passage: “... is a... It changes into... when... I think it's... ” 学科网(北京)股份有限公司 $

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Unit 7 How do things change(教学设计)-2025-2026学年沪教版英语四年级下册
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Unit 7 How do things change(教学设计)-2025-2026学年沪教版英语四年级下册
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Unit 7 How do things change(教学设计)-2025-2026学年沪教版英语四年级下册
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