Unit 4 Hands - on fun Word power 教学设计 2025-2026学年译林版（2024）八年级英语上册

Unit 4 Hands - on fun Word power 教学设计 I. Teaching Objectives 1. Knowledge Objectives Students will master prefixes un-, in-, im- to form opposite adjectives (e.g., lucky → unlucky, possible → impossible). Students will accurately apply these prefixes in context (DIY - related conversations and descriptions). 2. Ability Objectives Improve word - building skills by applying prefix rules to adjectives. Enhance reading and writing abilities through completing textbook tasks and describing DIY jobs. 3. Affective Objectives Foster awareness of word - formation rules, encouraging exploration of English vocabulary. Inspire students to use precise language to describe DIY experiences, including challenges (e.g., “unlucky mistakes”). II. Language Knowledge 1. Key Words & Phrases Prefixes: un-, in-, im-; Derived adjectives: unlucky, incorrect, impossible, unusual, incomplete, impolite; DIY - related: tidy, patient, possible, correct 2. Key Sentences “One of the most common prefixes for adjectives is un-. ‘It means not’. We add it to some adjectives to give them the opposite meaning.” “It’s ______ to find me without a DIY job to do. I’m too ______. It’s ______ to finish a DIY job if you are not patient.” 3. Key and Challenging Points Key Points: Master prefix rules to form opposite adjectives from base words. Challenging Points: Correctly applying prefixes (e.g., “patient → impatient” vs. “tidy → untidy”) and handling spelling changes. III. Teaching Procedures (Total Duration: 45 Minutes) Step 1 Introduction to Prefixes (7 Minutes) Show example adjectives with prefixes (e.g., lucky → unlucky, possible → impossible). Ask: “How do these prefixes change the meaning?” Introduce the topic: “Today, we’ll learn to form opposite adjectives using un-, in-, im-—useful for describing DIY challenges and experiences!” Step 2 Prefix Explanation & Practice (12 Minutes) Rule Presentation: Explain prefix usage: un-: Common for many adjectives (e.g., lucky → unlucky, tidy → untidy). in-: For adjectives like correct → incorrect, active → inactive. im-: For adjectives starting with p (e.g., possible → impossible, patient → impatient). Highlight spelling patterns (e.g., “perfect → imperfect”, “polite → impolite”). Quick Quiz: Call out base adjectives; students say the opposite with prefixes (e.g., “patient → impatient!”). Step 3 Text Completion—Activity A (10 Minutes) Students complete Activity A (adding prefixes to form opposite adjectives). Walk around to assist, emphasizing tricky prefixes (e.g., “friendly → unfriendly”, “perfect → imperfect”). Check answers together, discussing why each prefix is used (e.g., “possible → impossible (uses im- for ‘p’ - starting words)”). Step 4 Application—Activity B (8 Minutes) Students do Activity B (filling conversations with prefixed adjectives). Highlight sentence contexts: “It’s unusual to find me without a DIY job; I’m too impatient.” Discuss answers, focusing on how prefixes clarify DIY experiences (e.g., “untidy room” shows a DIY - related mess). Step 5 Extension Writing—Activity C (10 Minutes) Task: “Write about your and your friends’ DIY jobs, using un-, in-, im-. E.g., ‘My friend had an unlucky DIY attempt—he made an incorrect cut, but kept trying!’” Students write short texts. Invite 2–3 to share, and give feedback on prefix use and creativity. Step 6 Summary & Homework (3 Minutes) Summary (2 Minutes): Recap prefix rules and key derived words (e.g., lucky - unlucky, possible - impossible). Homework (1 Minute): Make a table of 5 new adjectives → opposite adjectives using un-, in-, im-. Write 3 sentences about a DIY challenge, using prefixed adjectives. IV. Assessment of Teaching Effectiveness Check Activity A/B answers for correct prefix application. Evaluate Activity C writing for accurate prefix use and creative DIY descriptions. V. Design Purpose Introduction: Use textbook examples to spark interest in word - building. Explanation/Practice: Clear rule breakdown + quick quiz for active learning. Text Completion: Apply prefixes in context to reinforce understanding. Extension: Link to personal DIY experiences, expanding creative expression and vocabulary use. VI. Blackboard Design Unit 4 Word power—Prefixes for Opposites Prefix Rules: - lucky → unlucky (un-) - correct → incorrect (in-) - possible → impossible (im-) Spelling Notes: - patient → impatient (im- for ‘p’ start) - tidy → untidy (un- for common adjectives) Homework: Create DIY challenge sentences! VII. Teaching Reflection Strengths: Prefix rules taught with clear examples; activities connect to DIY experiences for relevance. Weaknesses: Some students may mix up prefixes (e.g., “inpatient” vs. “impatient”). Improvements: Add a “prefix sorting game” (match base adjectives to correct prefixes) in Step 2 for stronger reinforcement. Provide a list of common prefix - adjective pairings for reference. 学科网（北京）股份有限公司 $$