Unit 5 The power of plants-Understanding ideas 教学设计 2025-2026学年外研版英语七年级上册

该初中英语教学设计聚焦“植物的力量”主题，围绕光合作用原理及植物重要性展开，通过植物图片导入激活学生已知，读前用图片、实物辅助词汇教学搭建支架，读中分层阅读（略读、扫读、细读）与小组讨论深化理解，形成连贯学习脉络。 资料亮点在于融合语言能力与思维品质培养，导入讨论与小组活动提升学生语言表达与合作能力，预测文本、问题探究培养逻辑思维，词汇直观化教学与海报作业设计增强学习主动性，教学反思提供改进方向，助力教师优化教学，学生高效掌握知识与技能。

Unit 5 The power of plants-Understanding ideas This unit, "The Power of Plants", falls within the "Man and Nature" category, focusing on the theme of "loving and respecting nature, and living in harmony with it". The "Understanding Ideas" part aims to introduce students to the importance of plants, especially through the process of photosynthesis. By exploring this content, students will gain a deeper understanding of how plants contribute to the natural world and the significance of plants in our lives. The text likely contains descriptions of the photosynthesis process, explanations of how plants produce oxygen and food, and the overall role they play in maintaining the balance of the ecosystem. 教学目标 Students will be able to understand and master the key vocabulary related to plants, such as "photosynthesis", "oxygen", "carbon dioxide", "leaf", "stem", "root", etc. Grasp the main idea and key details of the text about the power of plants, especially the process of photosynthesis. Comprehend the usage and meaning of relevant sentence patterns used to describe plants and their functions. 教学重难点 Understanding the process of photosynthesis, including the role of sunlight, water, carbon dioxide, and the production of oxygen and food in plants. Mastering the key vocabulary and sentence patterns related to plants and photosynthesis. Improving students' reading comprehension ability to extract important information from the text. 1 Vocabulary Photosynthesis: The process by which green plants use sunlight to synthesize foods with carbon dioxide and water. Oxygen: A colorless, odorless gas that is essential for most living organisms to breathe. Carbon dioxide: A colorless, odorless gas produced by burning carbon and organic compounds and by respiration. Leaf: The main organ of photosynthesis in plants, usually flat and green. Stem: The main structural axis of a plant that supports leaves, flowers, and fruits. Root: The part of a plant that grows underground and absorbs water and nutrients. Chlorophyll: A green pigment in plants that is essential for photosynthesis. 2 Sentence Patterns "Plants take in carbon dioxide and give out oxygen through photosynthesis." "Sunlight is necessary for plants to carry out photosynthesis." "The roots of plants absorb water and nutrients from the soil." 教学过程 1 Lead - in (5 minutes) Show students some pictures of different plants, such as trees, flowers, and vegetables. Then ask them: "What do you know about plants? Why are they important to us?" Encourage students to share their ideas in pairs or small groups. After that, invite some students to share their group's ideas with the whole class. This activity can arouse students' interest in plants and activate their prior knowledge. 2 Pre - reading (8 minutes) Introduce the new vocabulary related to plants and photosynthesis. Use pictures, real objects (if possible), or simple explanations to help students understand the meaning of words like "photosynthesis", "oxygen", "carbon dioxide", etc. For example, show a picture of a plant leaf and explain that "this is a leaf, and it plays a very important role in photosynthesis". Let students read the title of the text "The Power of Plants" and predict what the text might be about. Ask them to write down their predictions in their notebooks and then share them with their partners. This can help students set a purpose for reading and improve their reading anticipation. 3 While - reading (18 minutes) Skimming: Let students quickly read the whole text to get the main idea. Then ask them to answer the question: "What is the main idea of this text?" Give them a few minutes to think and then call on some students to answer. The main idea is likely about the importance of plants, especially through the process of photosynthesis. Scanning: Instruct students to read the text again carefully and find the answers to some specific questions. For example: "What are the raw materials needed for photosynthesis?" (Carbon dioxide, water, and sunlight) "What are the products of photosynthesis?" (Oxygen and food) "Where does photosynthesis mainly take place in a plant?" (In the leaves) Give students enough time to read and find the answers. Then check the answers together as a class. Detailed Reading: Divide the text into several parts and ask students to read each part carefully. After reading each part, explain the difficult sentences and key language points. For example, when teaching the sentence "Plants take in carbon dioxide and give out oxygen through photosynthesis", explain the phrases "take in" and "give out". Then ask students to imitate the sentence to make their own sentences. Group Discussion: Organize students into groups of four or five. Give each group a topic related to the text, such as "If there were no plants on the earth, what would happen?" or "How can we protect plants?" Let the groups discuss the topic for about 5 minutes. Then ask each group to choose a representative to report their discussion results to the class. This can improve students' understanding of the text and their ability to express their opinions in English. 4 Post - reading (10 minutes) Summary: Summarize the key points of the text with the students, including the process of photosynthesis, the importance of plants, and the key vocabulary and sentence patterns. Write the summary on the blackboard or show it on the PPT. Writing Activity: Ask students to write a short passage about the importance of plants based on what they have learned in class. They can use the key words and sentence patterns on the blackboard. Give them about 8 minutes to write. After they finish writing, ask some students to read their passages aloud to the class. The teacher can give some comments and corrections. 5 Homework Assignment (4 minutes) Ask students to make a poster about plants. They can draw some plants, write down their names, and briefly introduce their functions. They can also add some pictures or photos of plants they find interesting. Encourage students to read more materials about plants, either in English or in Chinese, to expand their knowledge. 教学反思 Positive Aspects: The lead - in activity was effective in arousing students' interest in plants and getting them actively involved in the class discussion. Most students were able to share their ideas about plants, which helped to build a good learning atmosphere. The vocabulary introduction before reading was helpful for students to better understand the text. Using pictures and real - object explanations made the new words more vivid and easier to remember. The group discussion and writing activities provided students with opportunities to practice using the English they had learned. Students actively participated in the group discussion and expressed their opinions bravely. In the writing activity, many students were able to use the key vocabulary and sentence patterns correctly. Areas for Improvement: When teaching the difficult concept of photosynthesis, some students still seemed confused. Maybe more visual aids, such as animations or short videos, could be used in the future to make the explanation more intuitive. During the group discussion, some students dominated the conversation, while a few students were less active. In the future, more guidance should be given to ensure that every student can fully participate in the group activities. In the homework assignment, it might be better to provide more specific requirements and guidelines for making the poster to help students with limited creativity. Also, a follow - up activity in the next class to share the posters could be added to further enhance students' learning. 2 / 37 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $$