Week 5: Orthographic into Isometric Projection

Topic: From Orthographic to Isometric Projection

Class: M4

School: Mont Roches Training centre

Date: 13/04/2012

Prior Knowledge: Orthographic/Isometric Projection

Duration: 75 minutes

Number of students: 20

Aim: 

To teach students how to draw an object in isometric from 3 views given in Orthographic Projection- the crate.

Teaching Aids:

  1). Models/Charts in 3 views (orthographic).

  2). 3D Block

  3). Isometric/Square boards –marker of different colours.

Location: 

Theory classroom

Preparation: 3D card models (boxes) from toothpaste and perfume -Charts of simple Orthographic

Learning Outcomes

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

• Differentiate between the different views in orthographic projection.

• Differentiate between the various faces to convert into isometric.

•           Draw crate in isometric from Orthographic views

Procedure 

Step 1:  (5 minutes)

Welcome students and gain their attention to start the class.

Take attendance of students 

Step 2:  (10 minutes)

Recapitulation on orthographic projection -the previous lesson.

Step 3 :  (10 minutes)

  Introduction to Isometric from orthographic views.

  Show chart and explain the three views in orthographic.

Step 4 :  (10 minutes)

- Explaining using teaching aids- the boxes.

- Draw the 3 views, front, top and side.

- Use of teaching aid 3D model - brainstorming on the length, height and depth.

 - Draw and explain the angle 30 degrees in isometric.

-  Draw the complete crate.

Step 5:  (10 minutes)

Classwork 1 - copy explanation set on isometric and orthographic boards.

Step 6:  (10 minutes)

Checking and evaluating students work by walking around the class.

Step 7: (15minutes)

- Summarising the lesson by questioning.

- Class work 2 - ask students to refer to their DT photocopy to do exercise on crate in Isometric Projection.

- The same work should be completed at home.