Oblique Projection

Why do this problem?

Representing 3D objects in two dimensions on paper is a vital skill in the Design Technology curriculum, as well as an aspect of Shape and Space in the Maths curriculum.  This problem is part of a set of problems which will help students to understand why there are different ways to represent a 3D object in two dimensions, and what maths lies behind each method.

The article 3D Drawing was written to support these problems.

Key questions

What are the advantages of this method of 3D drawing?  What are the disadvantages?

What features of the object are retained in the drawing, which are not?

Possible extension

Oblique Projection is probably the easiest for students to understand.  Those who find it straight-forward should be encouraged to tackle the other problems in this set (linked from 3D Drawing) and to compare the various methods.

Possible support

Students who find it difficult to draw the multi-link structure shown in the problem could be given simpler multi-link structures to draw, helping them to build up to drawing more complex ones.