Lesson Plan

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Lesson Plan
Grade: Date: 17/01/2026
Subject: Design and Technology
Lesson Topic: Drawing techniques: freehand, orthographic, isometric, perspective
Learning Objective/s:
  • Describe the four drawing techniques and their appropriate applications.
  • Apply correct construction steps for orthographic, isometric and one‑point perspective drawings.
  • Produce a clear freehand sketch to communicate an initial design idea.
  • Evaluate line weight, proportion and accuracy across different drawing methods.
Materials Needed:
  • A3 drawing sheets or sketchbooks
  • HB–2B pencils and erasers
  • Rulers, set squares and compasses
  • Protractors and drafting triangles
  • Whiteboard and projector
  • Handout summarising the four techniques
 Introduction:
Begin with a quick gallery of student sketches showing freehand, orthographic, isometric and perspective views to spark interest. Review prior learning of basic line work and scale. Explain that today’s success criteria are to correctly produce each type of drawing and to justify the choice of technique for a given design problem.
Lesson Structure:
  1. Do‑now (5’) – Students label a mixed‑technique diagram, identifying each drawing type.
  2. Mini‑lecture (10’) – Overview of the four techniques, key characteristics, and when to use them (projector).
  3. Guided practice – Orthographic (12’) – Teacher demonstrates baseline and datum line; students complete a simple box with a cylindrical hole.
  4. Guided practice – Isometric (12’) – Demonstrate axes and plotting; students draw an isometric block with a chamfer.
  5. Guided practice – Perspective (12’) – One‑point perspective of a room; students add details using vanishing lines.
  6. Freehand sketching challenge (8’) – Quick concept sketch for a design brief, focusing on line weight and proportion.
  7. Peer review (8’) – Pairs check each other's drawings against a checklist.
  8. Plenary (3’) – Recap key steps and answer questions.
Conclusion:
Summarise the construction sequence for each technique and highlight common errors to avoid. Students complete an exit ticket stating which drawing method they feel most confident with and why. Assign homework to produce a set of three views of a chosen object for the next lesson.