an internal view of a 3D object when cut through a plane

indicates where a sectional view is taken from, represented by a dashed line with arrows

the features inside an object only visible in a cross-sectional drawing.

Cross-sectional drawings

Design and technology

Crating techniques

Rendering techniques

Realistic rendering techniques

One point perspective

Interpret orthographic projections

Draw orthographic projections

Exploded diagrams

Pupils will develop knowledge and skills of communication, including freehand 3D sketching using the crating technique. They will learn how to render to show texture and tone. They will also learn how to draw using more formal techniques, such as one-point perspective and orthographic projection.

Communication

What type of drawing shows internal features of an object?

What can cross-sectional drawings help us to understand?

In which fields are cross-sectional drawings commonly used?

What do hatched marks on a cross-sectional drawing indicate?

used to plan out and position elements of a drawing

a 3D representation of an object where sides are drawn at 30 degrees

Which of these views would you NOT usually see in an orthographic projection?

How are hidden lines or details represented in an orthographic projection?

When creating an orthographic projection, which view do you draw first?

Which term describes the size and shape of an object?

Starter Quiz

What is an orthographic projection?