Year 7 - Design and technology
Interpret orthographic projections
Communication
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
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.
Lesson Summary
You will learn to interpret an orthographic projection and sketch the shape 3D.
Key Notes
- Orthographic projections are used to share the details and dimensions of a design.
- Orthographic projections are used to accurately represent 3D designs in 2D.
- Orthographic projections are drawn to scale and show the true dimensions of designs.
- Orthographic projections use standard conventions, making them universal/international.
Vocabulary To Learn
- orthographic: represents a 3D object in 2D, where views are projected from the object's surface
- isometric: a 3D representation of an object where sides are drawn at 30 degrees
- dimension: measurements on a drawing to show the exact size of parts
- centre line: a dashed line that marks the middle of a hole or a symmetrical part of an object
Common Mistakes To Avoid
- Orthographic views are are separate drawings and do not connect.
3 Quick Questions (With Answers)
1. Explain the lesson in two key points.
Orthographic projections are used to share the details and dimensions of a design. Orthographic projections are used to accurately represent 3D designs in 2D.
2. What does this key word mean in this lesson? 'orthographic'
represents a 3D object in 2D, where views are projected from the object's surface.
3. Correct this common mistake.
Mistake: Orthographic views are are separate drawings and do not connect. Correction: Explain that each view (top, front, and side) represents a different perspective of the same object.
More Lessons In This Unit
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