### Lesson Plan: Engine II
**Subject:** Auto Mechanics
**Grade Level:** Senior Secondary 3
**Duration:** 90 minutes
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#### **Objectives:**
1. **Cognitive:**
- Students will understand the various types of engines, their components, and their functions.
- Students will be able to identify and explain the working principles of four-stroke and two-stroke engines.
2. **Affective:**
- Students will appreciate the significance of regular engine maintenance and the impact of engines on vehicle performance and environment.
3. **Psychomotor:**
- Students will practice hands-on identification and assembly/disassembly of engine parts.
#### **Materials Needed:**
- Whiteboard and markers
- Projector and computer
- Engine models or diagrams (posters or digital)
- Real engine parts for hands-on practice (pistons, crankshaft, camshaft, etc.)
- Engine maintenance tools
- Engine repair manuals
#### **Lesson Outline:**
**1. Introduction (10 minutes):**
- Greet the students and take attendance.
- Briefly recap the previous lesson’s content on engine fundamentals.
- State the objectives of today’s lesson.
- Introduce the topic "Engine II" and explain its importance.
**2. Lecture and Discussion (20 minutes):**
- **Types of Engines:**
- Spark Ignition (SI) Engines: Characteristics, applications, advantages, and disadvantages.
- Compression Ignition (CI) Engines: Characteristics, applications, advantages, and disadvantages.
- **Two-Stroke vs. Four-Stroke Engines:**
- Components and their roles in the engine.
- Working principles and cycles of each engine type.
- Advantages and disadvantages of each type.
- Use diagrams and videos to visualize the cycles.
**3. Practical Demonstration (30 minutes):**
- Introduce the real engine parts to the students.
- Demonstrate the identification of basic components such as:
- Pistons
- Crankshaft
- Camshaft
- Valves
- Cylinder head and block
- Allow students to handle parts and ask questions.
**4. Hands-on Activity (20 minutes):**
- Divide the class into small groups.
- Assign each group a set of engine parts.
- Task each group with assembling/disassembling certain parts of the engine.
- Instructors and assistants should circulate to assist and provide guidance.
**5. Q&A and Recap (10 minutes):**
- Gather students and review key points discussed and demonstrated.
- Answer any questions students have about the lesson.
- Highlight the importance of engine maintenance and its impact on performance and environment.
**6. Closing and Assignment (5 minutes):**
- Summarize the day's lesson.
- Assign homework:
- Read the next chapter in the textbook focusing on "Engine Maintenance".
- Prepare a short report on the maintenance procedures for either SI or CI engines.
- Preview the next class topic: "Engine Maintenance and Troubleshooting".
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#### **Assessment:**
- Participation in group activities.
- Ability to correctly identify and assemble/disassemble engine parts during the practical session.
- Quality and completeness of the homework assignment.
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#### **Differentiation:**
- Provide additional resources (videos, articles) for students who want to explore more.
- Offer additional support for students who may struggle during practicals.
#### **Reflection:**
- After the lesson, take notes on what worked well and what could be improved.
- Seek feedback from students regarding their understanding and enjoyment of the lesson.