### Lesson Plan: Processing of Wood - Manufactured Boards
#### Grade: Junior Secondary 3
#### Subject: Basic Technology
#### Duration: 60 minutes
#### Topic: Processing of Wood - Manufactured Boards
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**Learning Objectives:**
1. Understand the types of manufactured boards.
2. Identify the processes involved in the production of manufactured boards.
3. Recognize the uses and advantages of manufactured boards compared to natural wood.
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**Materials Needed:**
- Whiteboard and markers
- Projector or smartboard
- Samples of manufactured boards (e.g., plywood, MDF, chipboard)
- Handouts with diagrams and notes
- Videos showing the manufacturing process of different boards
- Safety goggles and gloves for demonstration (if applicable)
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### Introduction (10 minutes)
1. **Greetings and Introduction:**
- Greet the students warmly.
- Briefly introduce the topic of the day: "Processing of Wood - Manufactured Boards."
2. **Review of Previous Lesson:**
- Quickly recap the last lesson on natural wood and its properties.
- Ask a few questions to refresh their memories (e.g., "Can anyone tell me the difference between hardwood and softwood?").
3. **Learning Objectives:**
- State the objectives of today's lesson.
- Encourage students to ask questions and engage with the content.
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### Instruction (20 minutes)
1. **Introduction to Manufactured Boards:**
- Explain what manufactured boards are and provide examples (plywood, MDF, chipboard).
- Discuss why manufactured boards are used in place of or in addition to natural wood.
2. **Types of Manufactured Boards:**
- Use visuals or samples to illustrate different types of boards:
- **Plywood:** Layers of wood veneer glued together.
- **Medium Density Fiberboard (MDF):** Wood fibers bonded with resin.
- **Chipboard (Particle Board):** Wood chips compressed with glue.
- Describe their characteristics and typical uses in the industry.
3. **Manufacturing Process:**
- Present a step-by-step explanation of how each type of board is made.
- Show video clips demonstrating the manufacturing process of plywood, MDF, and chipboard.
4. **Advantages of Manufactured Boards:**
- Discuss the advantages (e.g., cost-effectiveness, uniformity, availability in large sizes).
- Compare these advantages to natural wood to highlight why manufactured boards are chosen for certain projects.
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### Activity (15 minutes)
1. **Small Group Discussion:**
- Divide the class into small groups.
- Distribute handouts with questions related to the lesson (e.g., "List three advantages of using plywood over natural wood." "Which board would be best for making furniture and why?").
- Allow students to discuss and write down their answers.
2. **Group Presentations:**
- Have each group present their answers to the class.
- Encourage other students to ask questions and discuss the responses.
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### Practical Demonstration (10 minutes)
1. **Safety Briefing:**
- Briefly go over safety procedures related to handling wood and manufactured boards.
- Distribute safety goggles and gloves if available.
2. **Hands-On Experience:**
- Provide small samples of each type of manufactured board.
- Allow students to touch, feel, and inspect the samples.
- Discuss the visible layers, texture, and density of each type.
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### Conclusion (5 minutes)
1. **Recap:**
- Summarize the key points covered in the lesson.
- Reinforce the understanding of the types, processes, and uses of manufactured boards.
2. **Questions and Answers:**
- Open the floor for any final questions or clarifications from the students.
3. **Assignment:**
- Assign a homework task where students must research and write a short report on a product made from manufactured boards and explain why that type of board was chosen.
4. **Closing:**
- Thank the students for their participation and remind them of the next lesson's topic.
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### Assessment:
1. **Class Participation:**
- Monitor student engagement during discussions and group activities.
2. **Homework Assignment:**
- Evaluate the reports on manufactured board products.
3. **Quiz:**
- Consider having a short quiz in the next lesson to assess retention.
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By following this lesson plan, students will gain a comprehensive understanding of manufactured boards, their production process, and their practical applications in the industry.