Lesson Plan for Senior Secondary 3 - Technical Drawing - rchitraves- Semi-circular, Lancet, Segmental, Tud

### Lesson Plan: Technical Drawing - Architraves (Senior Secondary 3) **Topic:** Architraves - Semi-Circular, Lancet, Segmental, Tudor, Parabolic, Elliptical, Flat Gauge, etc. --- #### **Objective:** By the end of the lesson, students will be able to: 1. Identify and classify different types of architraves. 2. Understand the geometric principles underlying each type of architrave. 3. Create precise technical drawings of various architraves using standard drawing tools. #### **Materials Needed:** - Drawing boards - T-squares - Set squares - Compass - Protractors - Pencils (HB and 2B) - Erasers - Rulers - Paper (A3 or A4 technical drawing paper) - Visual aids (images/diagrams of different architraves) - Overhead projector/interactive whiteboard (if available) --- #### **Lesson Duration:** 2 hours (120 minutes) --- ### **Lesson Plan Breakdown:** **1. Introduction (15 minutes)** - **Greeting and Attendance:** Take attendance and greet the students. - **Lesson Introduction:** - Briefly discuss previous lessons/topics to build context. - Introduce the topic of architraves—explain what they are and their importance in architecture. - **Learning Outcomes:** Clearly state the objectives of the lesson. **2. Theory: Types of Architraves (30 minutes)** - **Explanation of Each Type:** - **Semi-Circular Arch:** Explain its geometry, structural aspects, and common uses. - **Lancet Arch:** Describe its pointed structure, association with Gothic architecture. - **Segmental Arch:** Explain its segmental shape and structural efficiency. - **Tudor Arch:** Describe its elliptical shape with a slight point, common in Tudor architecture. - **Parabolic Arch:** Explain the significance of the parabola in structural engineering. - **Elliptical Arch:** Discuss its geometric properties and aesthetic appeal. - **Flat Gauge Arch:** Explain its flat or nearly flat shape, typically used in door and window openings. - **Visual Aids:** - Use diagrams and images to show each type of architrave. - Discuss practical applications and examples in real-life architecture. **3. Practical: Drawing Architraves (60 minutes)** - **Drawing Setup:** - Set up drawing boards and tools. - Ensure each student has the necessary materials. - **Step-by-Step Drawing Instructions:** - **Semi-Circular Arch:** - Draw a straight base line. - Mark the center of the line, then use a compass to draw a perfect semi-circle above the base line. - **Lancet Arch:** - Draw two equal straight lines converging to a sharp point above the base line. - **Segmental Arch:** - Draw a straight base line, use a compass to draw an arc that is a segment of a circle above the base line. - **Tudor Arch:** - Draw an ellipse with a slight point at the top. - **Parabolic Arch:** - Draw a base line, construct a parabola using appropriate geometric methods. - **Elliptical Arch:** - Draw an ellipse using the string method or an ellipse template. - **Flat Gauge Arch:** - Draw a nearly flat arc above the base line. - **Supervision and Assistance:** - Walk around the class to ensure students are following steps correctly. - Provide individual assistance as needed. **4. Conclusion and Recap (10 minutes)** - **Summary:** - Recap key points about different types of architraves and their properties. - Discuss any common mistakes and how to avoid them. - **Questions and Answers:** - Allow time for students to ask questions. - **Assignment:** - Assign homework to draw a specific type of architrave discussed in class. - Collect the drawings for assessment in the next class. **5. Cleanup and Dismissal (5 minutes)** - Ensure all drawing materials are properly put away. - Briefly preview what will be covered in the next lesson. - Dismiss the class. --- ### **Assessment:** - Evaluate students' in-class drawings on accuracy, neatness, and understanding of geometric principles. - Homework assignment to be graded for understanding and application of concepts discussed. --- ### **Notes for the Instructor:** - Be patient and provide clear explanations. - Use encouraging language to support students' learning. - Adapt the pace based on the students' understanding and proficiency. - Be prepared to use alternative methods if students are struggling with a particular concept. --- This lesson plan is developed to ensure students have both theoretical knowledge and practical drawing skills for various types of architraves as part of their technical drawing curriculum.