Unit 8 I love nature!-Time on the earth 教学设计 -2024-2025学年冀教版英语七年级下册

Unit 8 I love nature!-Time on the earth "Time on the earth" in Unit 8 of the 7th - grade English textbook (Hebei Education Press, 2024) focuses on the long history of the earth. It presents the development process of life on the earth in a vivid and interesting way by shortening the 4.6 - billion - year - old history of the earth into one day. Midnight on the earth started with a burst of volcanoes. Around 3 to 4 a.m., life appeared at the bottom of the oceans. At 6 p.m., water and sunlight began to provide energy for life, and all kinds of plants started to grow. At 9 p.m., the earth gave birth to different creatures. At 11:30 p.m., dinosaurs appeared. The last 20 minutes of the day was the "busiest" time: after the age of dinosaurs, it was the age of all kinds of animals, including humans. Through this content, students can not only learn about the evolution of life on the earth but also understand the relatively short time of human appearance in the long history of the earth. 教学目标 1. Knowledge Objectives Students will be able to understand and master key words and phrases related to the earth's history, such as "billion", "appear", "at the bottom of", "give birth to", etc. Students can accurately read and understand the passage about "Time on the earth", and be able to extract key information from it, like the time when different life forms emerged on the earth. Students will master the usage of number expressions such as "billion" and "million", and the correct usage of prepositional phrases. 2. Ability Objectives Improve students' reading comprehension ability, especially the ability to understand scientific and historical texts. Students can summarize the main idea of the passage and complete relevant reading tasks. Develop students' oral communication ability. They can discuss and share their views on the relationship between the earth and humans, as well as what they can do to protect the earth in English. Cultivate students' writing ability. They can write a short passage to describe the development of life on the earth based on the learned content. 3. Emotional Objectives Arouse students' interest in exploring the mysteries of the earth and nature, and stimulate their curiosity and thirst for knowledge. Enhance students' awareness of environmental protection, making them realize that humans are an integral part of the earth and should cherish and protect the earth. 教学重难点 1. Teaching Key Points Key vocabulary and phrases: Help students correctly understand and use words and phrases like "billion", "appear", "at the bottom of the ocean", "give birth to". For example, "Our planet is about 4.6 billion years old." "Life appeared at the bottom of the oceans around 3 to 4 a.m." Reading comprehension: Guide students to understand the overall content of the passage about the earth's history, and clearly understand the time sequence and corresponding events of the emergence and development of life on the earth. Grammar points: Teach students the correct usage of number words such as "billion" and "million", and prepositional phrases such as "at the bottom of". 2. Teaching Difficult Points Abstract concept understanding: Some concepts, such as the long history of the earth and the evolution process of life, are relatively abstract for seventh - grade students. It is necessary to use vivid teaching methods and examples to help them understand. English expression of complex ideas: When discussing the relationship between the earth and humans and how to protect the earth, students may find it difficult to accurately express their thoughts and views in English. Teachers need to provide necessary sentence patterns and guidance. 1. Key Words billion: one thousand million, e.g., Our planet is about 4.6 billion years old. appear: come into sight; become visible, e.g., Humans appeared only 2.5 million years ago. bottom: the lowest part or surface of something, e.g., Life appeared at the bottom of the oceans. creature: an animal, as distinct from a human being, e.g., The earth gave birth to different creatures. provide: make available for use; supply, e.g., Water and sunlight began to provide energy for life. 2. Key Phrases according to: as stated or indicated by; on the authority of, e.g., According to the latest research, humans appeared only 2.5 million years ago. at the bottom of: in the lowest part of, e.g., The key is at the bottom of the bag. give birth to: produce (a baby or young animal), e.g., The cat gave birth to three kittens. start with: have as the first part or beginning, e.g., Our English class starts with a song. 3. Grammar Points Usage of number words: When "billion", "million", etc. are used with specific numbers, they do not take the plural form. For example, 3 billion people, 5 million years. "Billions of", "millions of" are used to express an approximate and large number, followed by plural nouns. For example, Billions of stars, millions of years ago. Prepositional phrases: "at the bottom of" indicates the lowest position within a certain space. The opposite is "at the top of". 教学过程 1. Lead - in (5 minutes) Greet the students and show some pictures of the earth, such as the beautiful blue earth seen from space, the earth's surface with various terrains. Then ask students: "What do you know about the earth? How old do you think the earth is?" Encourage students to share their existing knowledge about the earth. Then introduce the topic of this lesson: "Today, we are going to explore the long history of the earth and learn about when different life forms appeared on it." 2. New Lesson (20 minutes) Vocabulary teaching (5 minutes): Present the new words and phrases on the PPT, and explain their meanings and usages one by one. For example, when teaching "billion", show some real - life examples like the world's population (about 8 billion people) to help students understand the concept of a large number. Use pictures to illustrate words like "creature", showing different animals. Let students read the words and phrases after the teacher several times to ensure correct pronunciation. Reading teaching (15 minutes): First reading: Let students read the passage "Time on the earth" quickly and silently, and then answer a general question: "What is the main idea of this passage?" Guide students to understand that the passage is about the long history of the earth and the time when life forms emerged. Second reading: Read the passage again with students sentence by sentence. Explain difficult sentences and key language points. For example, "If we shorten this into one day, humans appeared in the last two minutes." Explain the meaning of "shorten" and the usage of this conditional sentence. After each paragraph, ask some detailed questions, such as "When did life first appear on the earth?" "What happened at 6 p.m. on the earth's 'one - day' timeline?" Let students find the answers in the text. Third reading: Let students read the passage aloud by themselves, paying attention to intonation and pronunciation. 3. Practice (15 minutes) Comprehension exercises (5 minutes): Present some true - or - false questions or fill - in - the - blank questions on the PPT based on the passage content. For example: True or False: Dinosaurs appeared at 11:30 p.m. on the earth's 'one - day' timeline. (True) Fill in the blank: Water and sunlight began to provide energy for life at ____. (6 p.m.) Let students answer these questions individually first, and then check the answers together. Group discussion (10 minutes): Divide students into groups of 4 - 5. Pose three discussion questions: What's the relationship between the earth and humans? What will happen to the world in the future? What will you do to protect the earth? Encourage students to express their opinions in English in the group. Walk around the classroom to listen to their discussions and offer help if necessary. After the discussion, ask each group to choose a representative to share their group's ideas with the whole class. 4. Summary (3 minutes) Summarize the key points of this lesson with students, including important vocabulary, phrases, the main content of the passage, and the relationship between the earth and humans. Emphasize the importance of protecting the earth. For example: "Today, we learned many new words like 'billion', 'creature'. We also knew the long history of the earth. Remember, the earth is our home, and we should do our best to protect it." 5. Homework (2 minutes) Ask students to write a short passage (about 80 - 100 words) about their understanding of the earth's history and their plans to protect the earth. Encourage students to read more materials about the earth and nature in English to expand their knowledge. 教学反思 In this lesson, through various teaching methods such as picture - leading, reading - based teaching, and group discussion, students' interest in learning was effectively stimulated. Most students actively participated in classroom activities, especially in the group discussion part, where they showed great enthusiasm in expressing their views on the relationship between the earth and humans. However, there are still some areas for improvement. When teaching some abstract concepts, although pictures and examples were used, some students still had difficulty fully understanding. In the future, more vivid teaching aids, such as short videos about the earth's evolution, can be used. In terms of language output, some students were still a bit hesitant and made some grammar mistakes when expressing their ideas in English. More language practice and guidance on sentence construction should be provided in future classes to improve students' English - speaking and writing abilities. 2 / 37 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $