Unit 4 Amazing Plants and Animals Period 5 Section B (3a～3c)课件 2025-2026学年人教版（2024）英语八年级上册

该初中英语课件围绕蓝鲸主题，涵盖事实信息、生态价值及保护计划，通过小组信息解码（符号圈画△数字、□范围）、地图填空导入，衔接第三人称到第一人称改写，结合鲸落视频与链条排序理解生态意义，最终升级为保护计划写作，构建事实-情感-行动的学习支架。 其亮点在于融合语言能力（第一人称转换、“建议+原因”议论文结构）、思维品质（鲸落时间逻辑排序、因果分析威胁与保护）和学习能力（小组限时任务），如符号标记提取信息、鲸落视频辅助理解，学生提升表达与逻辑思维，增强环保意识，教师可直接应用结构化活动高效培养核心素养。

01 八上 Unit4 Amazing Plants and Animals Period 5 Section B (3a-3c) 01 Learning Goals in Period 5 In this period,you’ll: 1. Master the tools of expository writing - numbers (200 tons), scope (excluding the Arctic Ocean), time (90 years), and causal logic (whales' extinction benefits the ecosystem). 2. Be able to make the emotional transition from third person to first person (It can → I am gentle/love), and upgrade the expository writing to a "suggestion + reason" type argumentative essay (We should... because...) . 3. Use the △/□/〇 symbols to circle and mark the 5 types of information for the + four-person group. Complete the 3a decoding within 8 minutes. Copy the "total - part - total" structure from 3a to 3b (self-description → facts → emotions) and 3c (wonderful → problem → suggestion). 4. Be able to explain the "ecological foundation" value of the blue whale; in the 3c assignment, propose an actionable protection plan (such as stopping excessive fishing / cleaning the sea action). 01 Task 1 Reading Analysis “What do you know about blue whales?” 填写后并用as heavy as... /as long as... 造句 8分钟信息解码小组赛（4~5人），使用符号圈画法（△标记数字事实、 □标记栖息地范围、★标记生态作用）快速提取课文中的关键信息并填写上述表格 Task2 Map &Gap地图填空 Question1:Circle the areas where blue whales might be found. Question2:Why no blue whales in the Arctic? Task2 Map &Gap地图填空 Q1:Circle the areas where blue whales might be found. Q2:Because it is too cold/little food. Task3 Imagine you are a blue whale. Use the first person to rewrite the first paragraph. Hello everyone!My name is Billy the Blue Whale.I am________________________________________ ________________________________________ I’m heavy,but I love________________________ ________________________________________. I live in__________________________________. My favourite food is________________________. I can eat__________________________________. What should we mainly pay attention to when rewriting the article? 要点不可省略 weight hobbies living areaa Person:third person-first person Language: Change Structure the largest and heaviest animal on earth.I can weigh as much as 200 tons./My weight is as much as 200 tons. Task3 Imagine you are a blue whale. Use the first person to rewrite the first paragraph. Hello everyone!My name is Billy the Blue Whale.I am the largest and heaviest animal on earth.I can weigh as much as 200 tons./My weight is as much as 200 tons. I’m heavy,but I love________________________ ________________________________________. I live in__________________________________. My favourite food is________________________. I can eat__________________________________. What should we mainly pay attention to when rewriting the article? 要点不可省略 weight hobbies living area Person:third person-first person Language: Change Structure Hello everyone! My name is Billy the Blue Whale.I am the largest and heaviest animal on earth.I can weigh as much as 200 tons./My weight is as much as 200 tons_______________________________________________. I’m heavy,but I love swimming in the ocean.Many people like watching me swim,and they think I am one of the most beautiful things to see _________. I live in all oceans except the Arctic Ocean___________________________. My favourite food is some of the tiniest animals in the ocean_____________. I can eat around four tons of them a day_____________________________. EXAMPLE Section B 3a. Read the text and complete the table Blue whales live in all oceans except the Arctic Ocean. They eat a lot, but they eat some tiniest animals in the ocean .A blue whale can eat around four tons of these a day. except [ɪkˈsept] prep. 表示排除后接名词短语 "the Arctic Ocean" 区别（besides 表包含） ocean [ˈoʊʃ (ə)n] n. the mass of salt water that covers most of the earth’s surface tiniest最高级 tinier比较级 tiny [ˈtaɪni] 极小的 adj. ton /tʌn/ n. a unit for measuring weight a ton of 大量的 Reading Comprehension Section B 1.What do blue whales mainly eat? A) Large fish B) Tiny ocean animals C) Sea plants D) Other whales 2.Where do blue whales NOT live? A) Pacific Ocean B) Atlantic Ocean C) Arctic Ocean D) Indian Ocean 3.How much food can a blue whale eat in one day? A) One ton B) Two tons C) Three tons D) Four tons Task 3 Deep Reflection: The Life Cycle of Whale Sinking 蓝鲸视频请点击此处（按住CTRL并单击） 观看视频，思考下述问题 What is the ecological significance of the death of a blue whale? 蓝鲸的尸体在海底可以滋养海底生物长达百年，形成一个微型生态系统。 ‘They give life even in death – a final gift to the ocean’ ”即便生命已逝，它们仍能赋予海洋以生机——这是一种对海洋的终极馈赠。” Task 4 Whale Fall Chain 鲸落链条 New life is born Sharks eat the meat Shrimp consume the bones Bacteria decompose The group should arrange the correct time sequence in 2 minutes and mark it with "First", "Next", "Then", "Finally" in English. Then, present and read the sentences together. Task 4 Whale Fall Chain 鲸落链条 New life is born Sharks eat the meat Shrimp consume the bones Bacteria decompose Status Analysis(现状分析)：The blue whale is endangered and there are approximately 10,000 of them remaining.(蓝鲸濒危,现存约1万头) The threats they face include sonar interference (声呐干扰), ship collisions(船舶撞击) and plastic pollution(塑料污染), which seriously affect the survival of blue whales. The Current Situation and Threats of Blue Whales Task 5 Human Trouble List 人为麻烦清单 Question：Which human activities can harm blue whales? Answer：noise, plastic, over-fishing...... The group selects a question and writes an 1 English suggestion. Template: “We should stop using too much plastic because…” Task 6 Complete your passage about the blue whale based on the text in 3a. Protection Initiative Writing Frame:“Blue whales are amazing because ____. But now they need help. We should ____ because ____.” “What problems do blue whales face?” protection plan Basic:For instance, reducing the use of plastics starts from our daily lives, aiming to mitigate the damage caused by plastic waste to the marine ecosystem and creating a safer living environment for blue whales. 如减少塑料使用，从日常生活中做起，降低塑料垃圾对海洋生态的破坏，为蓝鲸创造更安全的生存环境。 Advanced:Such as designing whale-friendly shipping routes to reduce the collisions of ships with blue whales 如设计鲸鱼友好航线，减少船舶对蓝鲸的撞击。 Task 7 Poetry composition The Blue Giant Biggest ______ singing in the sea, (1) ______ its home so wild and free! (2) Word Bank: ① ________ (Hint: Animal name) ② ________ (Hint: Action verb) 01 Task 8 After-class assignment Design an electronic poster for the protection of blue whales, which should include specific actions and scientific data. 设计一张蓝鲸保护电子海报，需包含具体行动和科学数据 Protecting blue whales is protecting the cycle code of life on Earth. 守护蓝鲸，就是守护地球生命的循环密码 Conclusion: Expository Writing Tools - (Numbers, Ranges, Time, and Causal Logic) 01 Thank you! $