**Lesson Plan: Oblique Drawing 1**
**Grade Level:** Senior Secondary 1
**Duration:** 60 minutes
**Subject:** Technical Drawing
**Topic:** Oblique Drawing 1
**Objectives:**
- Introduce students to the concept of oblique drawing.
- Teach students how to create simple oblique drawings.
- Enable students to distinguish between different types of oblique drawings (cavalier, cabinet).
- Develop basic skills in sketching and visualizing objects in oblique projection.
**Materials:**
- Graph paper
- Rulers
- Pencils
- Erasers
- Whiteboard and markers
- Sample objects for drawing
- Visual aids (examples of oblique drawings)
**Lesson Outline:**
**Introduction (10 minutes):**
1. **Greeting and Roll Call:** Briefly greet the students and take attendance.
2. **Objective Introduction:** Introduce the topic "Oblique Drawing 1" and explain the objectives for the lesson.
3. **Background:** Explain the importance of oblique drawing in technical fields and its applications in various industries.
**Direct Instruction (15 minutes):**
4. **Concept Explanation:**
- Define oblique drawing: A type of technical drawing where the front view is drawn to scale and the other dimensions are projected at an angle.
- Discuss the two main types of oblique drawings: cavalier (full scale) and cabinet (half scale).
- Explain how to choose the angles typically used for oblique drawings (usually 30°, 45°, or 60°).
5. **Demonstration:**
- Using the whiteboard, demonstrate how to draw a simple 3D object (such as a cube) in oblique view.
- Show the difference in appearance between cavalier and cabinet drawings.
**Guided Practice (20 minutes):**
6. **Step-by-Step Drawing:**
- Guide students step-by-step through the process of creating an oblique drawing of a simple object (e.g., a rectangular block):
a. Draw the front view of the object to scale.
b. Project the other dimensions at an angle.
c. Complete and refine the drawing, emphasizing the importance of maintaining proportions.
7. **Hands-On Activity:**
- Distribute graph paper, pencils, and rulers to students.
- Assign a simple object for the students to draw in oblique views (e.g., a book or a box).
- Move around the classroom to provide individual assistance as needed.
**Independent Practice (10 minutes):**
8. **Practice Assignment:**
- Ask students to select another simple object of their choice (e.g., a mug, a small container) and create an oblique drawing using both cavalier and cabinet projections.
- Encourage students to pay attention to scale and angles.
**Assessment (5 minutes):**
9. **Review and Feedback:**
- Collect a few student drawings and review them with the class, pointing out strengths and areas for improvement.
- Provide constructive feedback and answer any remaining questions.
**Conclusion (5 minutes):**
10. **Recap:**
- Summarize the key points covered in the lesson, including the steps to create oblique drawings and the differences between cavalier and cabinet projections.
- Highlight the significance of accuracy and neatness in technical drawing.
11. **Homework Assignment:**
- Assign a homework task: Create an oblique drawing of an object found at home using both cavalier and cabinet projections (e.g., a piece of furniture).
**Closing:**
12. **Dismissal:**
- Thank students for their participation and remind them of the importance of practicing their drawing skills.
**Follow-Up:**
- In the next class, review the homework assignments and address any common mistakes or areas where students faced difficulties.
- Gradually introduce more complex objects for oblique drawing practice as students become more comfortable with the technique.