# Lesson Plan: Drawing Practices - Oblique Drawing
## Subject: Basic Tech
## Level: Junior Secondary 3
## Topic: Drawing Practices - Oblique Drawing
## Duration: 60 minutes
### Objectives:
By the end of the lesson, students will be able to:
1. Understand the concept and purpose of oblique drawing.
2. Identify the characteristics of oblique drawings.
3. Draw basic objects using the oblique drawing technique.
### Materials Needed:
- Whiteboard and markers
- Graph paper
- Rulers
- Pencils and erasers
- Examples of oblique drawings (printouts or digital images)
- PowerPoint presentation (optional)
### Lesson Procedure:
#### 1. Introduction (10 minutes)
- Greeting and settle the class.
- Briefly review the previous lesson on orthographic projection.
- Introduce the topic of oblique drawing.
- Explain the learning objectives.
#### 2. Direct Instruction (15 minutes)
- **Definition and Purpose**:
- Define oblique drawing.
- Explain that it is a type of technical drawing used to represent three-dimensional objects in two dimensions.
- Highlight its use in design, architecture, and engineering for quickly communicating object shapes.
- **Characteristics**:
- Explain that in oblique drawing, the front face of the object is drawn to scale.
- The depth axes are drawn at an angle (typically 45 degrees) and foreshortened (usually half or full scale).
- Show examples of oblique drawings (display on board, handouts, or projector).
- **Types**:
- Discuss cavalier and cabinet oblique drawings, noting that cavalier drawings draw the depth at full scale, while cabinet drawings draw it at half scale for a more realistic appearance.
#### 3. Guided Practice (20 minutes)
- **Step-by-Step Drawing**:
- Demonstrate on the whiteboard how to draw a simple cube in oblique:
- Draw the front face square.
- Project the edges at a 45-degree angle to the right using a ruler.
- Adjust the length of the depth lines according to the chosen scale (either full or half scale).
- Complete the top and side faces.
- Allow students to follow along on their graph paper.
- **Interactive Work**:
- Walk around the classroom to provide individual assistance.
- Encourage students to draw additional simple objects, like a rectangular prism or a cylinder.
#### 4. Independent Practice (10 minutes)
- Assign students to draw a household item (e.g., a book, table, or chair) in oblique.
- Encourage creativity while maintaining accuracy in proportions and angles.
- Allow students to use rulers and erasers to refine their drawings.
#### 5. Review and Q&A (5 minutes)
- Review key points of oblique drawing.
- Answer any remaining questions from students.
- Provide immediate feedback on their independent practice drawings.
#### 6. Conclusion and Assignment (5 minutes)
- Summarize the lesson and key concepts.
- Assign homework: Draw an oblique view of a simple room (including furniture like a bed, desk, or chair).
- Inform students that their homework will be reviewed in the next class.
- Thank students for their participation and effort.
### Assessment:
- Informal observation during guided practice.
- Review of independent practice drawings.
- Homework assignment to be evaluated in the next class.
### Reflection:
- Note areas where students struggled and plan to revisit difficult concepts.
- Collect feedback from students about the lesson's clarity and their comfort with the new skill.
This lesson plan aims to combine theoretical knowledge with practical skills, helping students grasp the concept of oblique drawing through hands-on activities and detailed explanations.