**Basic Technology Lesson Plan: Orthographic Drawing**
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**Grade Level:** Junior Secondary 3
**Subject:** Basic Technology
**Topic:** Orthographic Drawing
**Duration:** 60 minutes
**Objectives:**
By the end of this lesson, students will be able to:
1. Understand the concept of orthographic drawing.
2. Identify the different views used in orthographic projection.
3. Apply basic techniques to create simple orthographic drawings.
**Materials:**
- Whiteboard and markers
- Chart paper
- Pencils, rulers, erasers
- Examples of orthographic drawings (printed or projected)
- Graph paper
- Handouts with practice exercises
**Lesson Structure:**
**Introduction (10 minutes):**
1. **Greeting and Roll Call (2 minutes):**
- Welcome students and take attendance.
2. **Hook (3 minutes):**
- Show an object (e.g., a small box) and ask students how they might draw it from different angles. Introduce the term "orthographic drawing" as a method used to represent 3D objects in 2D space.
3. **Learning Objectives (2 minutes):**
- Present the objectives of the lesson.
4. **Background Knowledge (3 minutes):**
- Briefly discuss the importance of technical drawing in various fields like architecture, engineering, and design.
**Instruction (20 minutes):**
1. **Explanation of Orthographic Drawing (10 minutes):**
- Define orthographic drawing.
- Explain the three standard views: front view, top view, and side view.
- Use a simple object and demonstrate how to identify and draw its different views on the whiteboard or chart paper.
2. **Guided Practice (10 minutes):**
- Distribute example objects (e.g., simple geometric shapes like cubes or cylinders) and guide students through drawing the three views step-by-step.
- Walk around the classroom to provide individual assistance as needed.
**Activity (15 minutes):**
1. **Practice Exercise:**
- Hand out graph paper and pencils. Ask students to choose an object from their desk or classroom and draw its orthographic projections.
- Encourage students to first sketch lightly and then darken the lines once they are satisfied with the proportions and alignment.
**Review and Discussion (10 minutes):**
1. **Group Sharing (5 minutes):**
- Allow students to pair up and discuss their drawings with a partner. They should check each other's work for accuracy and completeness.
2. **Class Discussion (5 minutes):**
- Bring the class back together and ask a few volunteers to display their drawings.
- Discuss common challenges and solutions. Reinforce the importance of accuracy and neatness in technical drawing.
**Assessment (5 minutes):**
- Collect the students' orthographic drawings to evaluate their understanding and provide feedback.
- Consider providing a short quiz or exit ticket with a few basic questions on orthographic drawing to assess understanding.
**Closure (5 minutes):**
1. **Summary:**
- Summarize the key points covered during the lesson.
2. **Question and Answer:**
- Allow time for students to ask questions.
3. **Preview of Next Lesson:**
- Briefly discuss the next topic to build anticipation.
**Homework:**
- Assign students to find an everyday object at home and create orthographic drawings (front, top, and side views). They should bring these drawings to the next class for review.
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**Additional Notes:**
- Differentiate instruction by providing more complex objects to advanced students or offering additional support to those who need it.
- Utilize digital drawing tools or apps if available to enhance learning and engagement.
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End of Lesson Plan