T1-L13: Orthogonal (Multi-View) Drawing

Name:

Class:

Date:

Folio: pp. 61–64

Outcomes: TE4-DES-01 TE4-PPM-01 Folio pp. 61–64

Learning Intention

We are learning to draw and interpret orthogonal (multi-view) drawings.

Success Criteria

I can identify front, side and top views
I can fill in missing lines on orthogonal drawings
I can convert between orthogonal and isometric views
I can explain why orthogonal drawings are used in engineering

✎

Do Now

How many sides does a box have? Can you see them all at once?

#	Question	Your answer
1	How many sides does a box have?
2	How many can you see from one angle?
3	Why is this a problem for engineers?

📚

Key Vocabulary

Standard: Fill in the definition. | Support: Definitions shown in grey — read and copy into your folio. | Extension: Use each term in a sentence.

Term	Definition	Use in a sentence (Extension)
Orthogonal	A drawing method showing 2D views at right angles — also called orthographic
Elevation	A view of an object from the front or side
Plan view	The view looking directly down from above — also called top view
Projection	The method of representing 3D objects on a 2D surface
Front view	What you see looking directly at the front face
Side view	What you see looking directly at the right side
Top view	Same as plan view — looking directly down from above
Hidden detail	Edges that exist but cannot be seen — drawn as dashed lines

📐

First Angle Projection Layout

In first angle projection, the views are arranged in a specific layout. Fill in where each view goes.

Position	Which view goes here?	Your answer
Top-left	This is the main view
To the RIGHT of the front view	Looking from the right side
BELOW the front view	Looking from directly above

Mnemonic: “Plan goes down under — just like Australia!”

✏

Fill in Missing Lines (Folio pp. 61–62)

Complete the exercises in your folio, then record what you did below.

Exercise	What view is incomplete?	What lines did you add? (solid or dashed?)
1
2
3
4

🔄

Orthogonal ↔ Isometric Conversion (Folio pp. 63–64)

Part A: Given orthogonal views → draw the isometric shape (Folio p. 63)

Question	Your answer
What shape is the object?
What was the hardest part of this conversion?

Part B: Given isometric → draw orthogonal views (Folio p. 64)

Question	Your answer
What shape is the object?
What was the hardest part of this conversion?

🤝

Peer Check

Swap your work with a partner. Check the 4 criteria below, then give feedback.

#	Criteria	Pass? (✓ or ✗)
1	Views are in the correct positions (first angle projection)
2	Features align between views (same heights, widths)
3	Hidden lines are drawn as dashed lines
4	Ruler was used for all straight lines

One positive:

One improvement:

🔵 Support — Guided Orthogonal Drawing

Use these tips to help with orthogonal drawing:

Pre-drawn view boxes are provided in first angle projection layout
Start with simple rectangular prisms before complex shapes
Use a physical 3D block to help you visualise the views
Colour-code your views: Front = blue, Side = green, Plan = red

Word Bank

orthogonalelevationplanprojection hiddendashedalign

🟠 Extension — Advanced Orthogonal Drawing

Real object: Draw orthogonal views of a real classroom object. Include dimensions and a title block.

Object chosen:

Puzzle: Create an orthogonal puzzle for a classmate — give them 2 views and see if they can draw the third.

Challenge: Attempt drawing orthogonal views of curved surfaces (cylinder or cone). What extra challenge does this create?

🎫

Exit Ticket — Reflection

1. Why can’t isometric drawings show ALL details of an object?

2. BONUS: Name the 3 standard views in orthogonal drawing.

✅

Self-Assessment

Success Criteria	Got it 🟢	Nearly there 🟠	Need help 🔴
I can identify front, side and top views	●	●	●
I can fill in missing lines on orthogonal drawings	●	●	●
I can convert between orthogonal and isometric views	●	●	●
I can explain why orthogonal drawings are used in engineering	●	●	●