Lesson Plan for Junior Secondary 3 - Basic Tech - Energy Sources- Windmill

### Lesson Plan: Energy Sources - Windmill **Subject:** Basic Technology **Grade Level:** Junior Secondary 3 **Duration:** 60 minutes **Topic:** Energy Sources - Windmill #### Objectives: By the end of the lesson, students will be able to: 1. Define wind energy and explain how a windmill works. 2. Identify the various components of a windmill. 3. Understand the advantages and disadvantages of using wind energy. 4. Create a simple model of a windmill using basic materials. #### Materials Needed: - Chart paper and markers - PowerPoint presentation - Model of a windmill or images/videos - Craft materials (cardboard, scissors, glue, straws, paper clips) - Worksheets and handouts #### Lesson Structure: **Introduction (10 minutes):** 1. **Greeting and Brief Overview:** - Welcome students and introduce today's topic. - Briefly discuss what they know about energy and different energy sources. 2. **Icebreaker:** - Ask students if they have ever seen a windmill or know what it's used for. - Show a short video or images of windmills in action. **Teaching (20 minutes):** 1. **Explanation:** - Define wind energy: Wind energy is the process by which wind is used to generate electricity. - Explain how windmills work: Wind turns the blades, which spin a shaft connected to a generator that produces electricity. 2. **Components of a Windmill:** - Introduce the main parts of a windmill: blades, rotor, shaft, generator, tower. - Use diagrams or a model to show these components. 3. **Advantages and Disadvantages:** - Discuss the benefits of wind energy (renewable, clean, cost-effective in the long run). - Discuss the limitations (intermittent, noise, impact on wildlife). **Activity (20 minutes):** 1. **Hands-On Windmill Model:** - Divide students into small groups. - Provide each group with materials to create a simple windmill model. - Give step-by-step instructions: 1. Cut out blades from cardboard. 2. Attach the blades to a straw (acting as the rotor). 3. Use a paperclip to connect the rotor to a small piece of cardboard (representing the generator and tower base). 2. **Testing and Observation:** - Allow students to blow on their windmills to see how movement is generated. - Discuss what they observe about the motion and efficiency of their models. **Assessment (5 minutes):** 1. **Questions and Review:** - Ask a few questions to review key concepts (e.g., "What are the components of a windmill?", "What are the advantages of wind energy?"). 2. **Worksheet Completion:** - Distribute worksheets containing multiple-choice and short-answer questions about windmills and wind energy. **Conclusion (5 minutes):** 1. **Summary:** - Recap the main points discussed in the lesson. 2. **Homework Assignment:** - Assign students to write a short paragraph on how windmills can impact their local community. - Encourage students to research more about wind energy and other renewable energy sources. **Additional Notes:** - Ensure all students are actively participating and get the necessary support if they have difficulty with the model-building activity. - Use multimedia resources to make the lesson more engaging and comprehensible. --- This lesson plan aims to provide a comprehensive and engaging approach to teaching Junior Secondary 3 students about wind energy and windmills, combining theoretical knowledge with practical activities.