Lesson Plan

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Lesson Plan
Grade: Date: 25/02/2026
Subject: Design and Technology
Lesson Topic: Presentation techniques: freehand sketching, including exploded and sectional views (cut-away) drawings/sketches, accurate isometric drawings, including the construction of arcs and circles, estimated one- and two-point perspective drawings, accurate
Learning Objective/s:
  • Apply freehand sketching conventions to produce legible, proportionate design ideas.
  • Construct accurate exploded and sectional (cut‑away) views with proper spacing, labeling and hatching.
  • Produce isometric drawings, including arcs and circles, using the ellipse method and correct 30°/30°/120° projection.
  • Create one‑point and two‑point perspective sketches that demonstrate correct vanishing‑point placement.
  • Self‑evaluate drawings against a checklist of presentation‑technique criteria.
Materials Needed:
  • Projector and screen
  • A4 drawing paper (one sheet per student)
  • HB and 2B pencils, erasers
  • Ruler and set square
  • Compass
  • Pre‑printed gear component diagram (handout)
  • Presentation‑technique checklist (handout)
 Introduction:
Begin with a quick visual of a complex product and ask students how they would explain its construction. Link this to prior knowledge of basic sketching and state that today they will master a range of presentation techniques. Success criteria: students will produce a set of accurate drawings and check their work against the provided checklist.
Lesson Structure:
  1. Do‑now (5') – Freehand sketch a common household object; teacher circulates to note proportion and line weight.
  2. Mini‑lecture (10') – Overview of exploded, sectional, isometric, perspective and planometric techniques with projected examples on the screen.
  3. Guided practice (20') – Students construct an exploded view of a simple gearbox, label each component and maintain uniform spacing.
  4. Paired activity (15') – Using the same gearbox, create an isometric drawing including arcs (ellipse method) and add hidden lines; peers check using the checklist.
  5. Consolidation (5') – Whole‑class review of drawings, highlight common errors, and confirm that each technique meets the success criteria.
Conclusion:
Recap the key steps for each presentation technique and remind students of the checklist as a self‑assessment tool. For the exit ticket, each learner writes one tip for improving freehand sketches, exploded views, and perspective drawings. Homework: complete a two‑point perspective sketch of a chair, applying the vanishing‑point rules discussed.