Week 3: Isometric Projection

Topic: 

Isometric Projection of shaped blocks with horizontal & vertical faces.

Class: M6

School: Mont Roches training centre

Date: 20/05/2012

Prior Knowledge: Drawing of Crate in Isometric projection.

Duration: 80 mins - (2 periods)

Time: 11.10 to 12.30

Number of Students: 30

Aim: 

To draw shaped blocks into isometric projection

Teaching Aids:

Whiteboard, isometric and orthographic grid boards.

Location: Theory classroom.

Preparation: Drawings on boards.

LEARNING OUTCOMES

At the end of the lesson students should be able to:

  1. Read dimension from Orthographic views.

  2. Draw crate in isometric according to the three dimensions in Orthographic projection.

  3. Insert details of other shapes in the crate.

  4. Draw dark lines to complete the final drawing of the shaped block.

PROCEDURE

Step 1:  ( l0 minutes)

•  Welcome students in the class

•   Take attendance of students

 Recall on previous lesson, 'drawing of the crate in isometric projection', questions students on:

  a) The three views in orthographic projection

  b) The name of three 3 dimensions

  c) The position and direction of the Length, Height and the Depth.

Step 2:  (25 minutes)

•  Explain by referring to the three views, Front, Side, and Top views

• Read and write dimensions with the participation of the students.
• Draw the crate in isometric projection according to dimensions identified.
• Distinguish the other horizontal and vertical faces (by labelling a, b, c and so on), which are not on the surfaces of the crate.
• Add the other surfaces in the isometric crate; darken the visible edges to complete the drawing.

 Step 3:  (20 minutes)

   (a)  Ask students to copy the example set on the boards.

   (b)  Walk round the class to monitor students' work.

   (c)  Guide students who are facing in difficulty.

   (d)   Correct the work of students who have finished.

Step 4:  (10 minutes)

Summing up of the lesson by asking a few questions to the students to test their level of comprehension of the topic.

Step 5:   (15 minutes)

 - Students are given an activity.

 - Students have to refer to their photocopy (DT –given to them prior) to practice numbers1&2.

 The same task has to be completed at home if they do not finish it by the end of the class. 

Walk around to see progress of work.