## Lesson Plan: Basic Tech - Oblique Drawing and Perspectives
### Grade Level: Junior Secondary 3
#### Subject: Basic Technology
#### Duration: 80 minutes
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### Objectives:
By the end of the lesson, students will be able to:
1. Define oblique drawing and perspective drawing.
2. Differentiate between oblique drawing and perspectives.
3. Create basic oblique drawings.
4. Create one-point and two-point perspective drawings.
### Materials:
- Graph paper
- Rulers
- Pencils and erasers
- Set squares or protractors
- Visual aids (poster or PowerPoint slides)
- Samples of oblique and perspective drawings
- Whiteboard and markers
### Lesson Plan:
#### **Introduction (10 minutes)**
1. **Warm-Up Activity**: Start with a brief recap of orthographic projection to activate prior knowledge.
2. **Definition Introduction**:
- Introduce oblique drawing: Explain that it is a method of drawing objects in a three-dimensional view where the front face is shown in actual size and shape, while the other sides recede at an angle, commonly 45 degrees.
- Introduce perspective drawing: Explain that it is a method of drawing that shows objects the way they appear to the human eye, involving vanishing points and realistic depth.
#### **Instructional Input (20 minutes)**
1. **Explanation of Oblique Drawing**:
- Draw a simple shape (like a cube) on the whiteboard.
- Show how the front face is drawn as a true shape and the sides are receded at a 45-degree angle.
- Explain the difference between cavalier (full scale) and cabinet (half scale) oblique drawings.
2. **Explanation of Perspective Drawing**:
- Describe one-point perspective: All lines recede towards a single vanishing point. Demonstrate with a drawing of a simple cube.
- Describe two-point perspective: Lines recede towards two vanishing points. Demonstrate with a drawing of a rectangular prism.
#### **Guided Practice (20 minutes)**
1. **Oblique Drawing**:
- Distribute graph paper and drawing tools.
- Guide students through the process of drawing a simple object (e.g., a small box) using the oblique method. Move around the class to provide individual help.
2. **One-Point Perspective**:
- On the whiteboard, guide students in drawing a road or a hallway using one-point perspective. Mark the vanishing point and the horizon line.
3. **Two-Point Perspective**:
- Guide students in drawing a simple building or a cube using two-point perspective. Show how the lines recede towards two different vanishing points on the horizon line.
#### **Independent Practice (20 minutes)**
- **Student Drawing Exercise**: Students choose an object (e.g., a book, a small box, or a piece of furniture) and create:
- An oblique drawing of the object.
- A one-point perspective drawing.
- A two-point perspective drawing.
### **Assessment/Evaluation (10 minutes)**
1. **Peer Review Session**: Students pair up to exchange their drawings and provide constructive feedback.
2. **Teacher Assessment**: Collect completed student drawings and evaluate based on accuracy, clarity, and application of techniques taught.
### **Closure (5 minutes)**
- Summarize the key points of oblique drawing and perspectives.
- Answer any final questions from the students.
- Assign homework: Students are to select an object from their home environment and create both an oblique and a perspective drawing of it.
### **Resources:**
- Helpful websites or videos that explain oblique drawing and perspective drawing
- Reference books in the school library
### **Reflection:**
- Teacher’s Notes: Reflect on what worked well in the lesson and what could be improved for future classes. Consider the pacing of the lesson and student engagement levels. Collect feedback from students about the difficulty and enjoyment of the exercises.