Step VI: Teacher illustrates the constructions on the topics on the board for the students.
Step VII: Teacher ensures that the students follow the demonstration.
Step VIII: Teacher gives the students room to ask question.
Evaluation: Students are to work on the construction of ellipse and cycloid as illustrated in the procedure above.
Conclusion: Teacher emphasizes on the each student error and allows the students to correct their errors.
WEEK TWO Date: Monday 11th – 15thSeptember; 2023.
Class: SSS 2
Subject:TECHNICAL DRAWING Topic:LOCI Sub-topic: Diagonal Method of Constructing Isometric Circle
Duration: 120 minutes
Learning Objectives: By the end of the lesson, students should be able to:
Construct isometric circle using the approximate circle or American method
Previous Knowledge: Students are familiar with the construction of isometric circle using the approximate circle method.
Instructional Materials: Web resources, Textbooks, Drawing instruments and equipment
Lesson Topic: Isometric Circle cont’d
Content:
Diagonal Method of Constructing Isometric Circle
Period: 1, 2& 3 Opening
The diagonal method Procedure: Draw the square ABCD and inscribe the given circle in it.
Draw the isometric square ABCD
Draw the diagonals in the squares.
Draw the horizontal and vertical centre lines in the two.
Draw vertical lines A1-D1, B1-C1 at the points of intersection of the circle and diagonals.
Draw horizontal lines A1-B1, D1-C1 at the points of intersection of the circle and diagonals.
Draw the small squares A1 at D, B1 at C, C1 at B, and D1 at A as shown
