**Lesson Plan: Transmission System**
**Grade/Year:** Senior Secondary 2 (SS2)
**Subject:** Auto Mechanics
**Duration:** 90 minutes
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### **Lesson Objectives:**
By the end of the lesson, students will be able to:
1. Understand the basic components and functions of a vehicle transmission system.
2. Identify the differences between manual and automatic transmission systems.
3. Comprehend the role of gear ratios and how they affect vehicle performance.
4. Conduct a basic inspection and diagnostic check on a transmission system.
### **Materials Needed:**
- Whiteboard and markers
- Multimedia projector and computer
- PowerPoint slides or notes on transmission systems
- Model transmission system (manual and automatic, if available)
- Handouts on key concepts (e.g., diagrams, flowcharts)
- Basic tools for inspection (e.g., wrenches, screwdrivers)
- Transmission fluid and dipstick examples
### **Lesson Outline:**
#### **1. Introduction (10 minutes)**
1. **Greeting and Attendance** (2 min)
- Briefly take attendance and greet students.
2. **Introduction to Topic** (3 min)
- Show a short video demonstrating the basic function of a vehicle’s transmission system.
- Link the video content to how it applies to students' daily lives (e.g., family cars, motorcycles).
3. **Lesson Objectives** (2 min)
- Clearly state the objectives for the lesson.
4. **Engage Students** (3 min)
- Ask students if they have noticed gear shifting in motorcycles or cars.
- Initiate a short discussion on their observations.
#### **2. Body (60 minutes)**
1. **Explanation of Transmission Systems** (20 min)
- **Manual Transmission:**
- Components: clutch, gear stick, gear box.
- Overview of how gears are shifted manually.
- Advantages and disadvantages.
- **Automatic Transmission:**
- Components: torque converter, planetary gear set.
- Explanation on how gears shift automatically.
- Advantages and disadvantages.
- Use slides and diagrams to illustrate points.
2. **Gear Ratios and Performance** (15 min)
- Explain the concept of gear ratios and their impact on vehicle performance.
- Use an example with a simple mathematical calculation to show how gear ratios change with shifting gears.
- Discuss why lower and higher gears are used in different driving conditions.
3. **Practical Demonstration** (25 min)
- **Inspection Techniques:**
- Show students how to conduct a basic visual inspection of a transmission system.
- Introduce essential tools and safety equipment.
- **Transmission Fluid Check:**
- Demonstrate how to check and replenish transmission fluid.
- Explain the importance of maintaining adequate fluid levels.
#### **3. Conclusion (10 minutes)**
1. **Q&A Session** (5 min)
- Open the floor for student questions regarding the day’s lesson.
- Address any confusion or elaborate on complex topics.
2. **Recap and Reinforcement** (3 min)
- Briefly recap the main points covered in the lesson.
- Re-emphasize the importance of understanding the transmission system for future auto mechanics.
3. **Assignment and Closing** (2 min)
- Assign a homework task:
- Students are to write a short paragraph explaining the main differences between manual and automatic transmissions.
- Optionally, assign a practical task where they observe and note gear shifting in family vehicles.
- Thank the students and signal the end of the class.
### **Assessment:**
- Formative assessment through class participation and Q&A.
- Homework assignment for subsequent review.
### **Homework Follow-Up:**
- Review and discuss the homework in the next class to reinforce understanding and address any gaps.
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**Note:** Always ensure that any practical session adheres to safety standards and that all students use protective gear where necessary.