Lesson Plan

Resources → Subject Notes → Design and Technology → Notes
Lesson Plan
Grade: Date: 25/02/2026
Subject: Design and Technology
Lesson Topic: First and third angle orthographic working drawings, including: use of scales, dimensioning, symbols and conventions, e.g. BS 308 or BS 8888, part drawings, sectional views.
Learning Objective/s:
  • Describe the differences between first and third angle orthographic projection conventions.
  • Apply appropriate scales and dimensioning techniques to produce accurate part drawings.
  • Demonstrate correct use of BS 308 and BS 8888 symbols, line types, and title‑block conventions.
  • Construct sectional views and annotate them with proper section lines and scales.
  • Evaluate and compare first and third angle drawings for consistency and correctness.
Materials Needed:
  • Projector or interactive whiteboard
  • CAD software (e.g., AutoCAD, Fusion 360) or drafting paper and drawing tools
  • Scale ruler set
  • BS 308 and BS 8888 reference sheets
  • Handout with example drawings and symbols
  • Worksheets for the practical exercise
 Introduction:
Begin with a quick visual comparison of first‑ and third‑angle drawings to spark curiosity. Review students’ prior experience with basic orthographic sketches. Explain that today they will master professional working drawings using industry standards and will be assessed on accuracy, proper scaling, and correct notation.
Lesson Structure:
  1. Do‑Now (5’) – Students label a mixed set of first/third‑angle views on a worksheet.
  2. Mini‑lecture (10’) – Explain projection conventions, scales, and BS standards with examples.
  3. Guided demonstration (15’) – Instructor models creating a part drawing in CAD, highlighting dimensioning and symbols.
  4. Collaborative activity (20’) – Pairs produce a first‑angle drawing of a simple bracket at 1:5 scale, including a title block.
  5. Switch‑angle task (10’) – Pairs convert their drawing to third‑angle format, noting layout changes.
  6. Peer review (10’) – Groups exchange drawings and use a checklist to verify scales, dimensions, symbols, and sectional views.
  7. Plenary (5’) – Teacher summarises key points and addresses common errors.
Conclusion:
Recap the main differences between projection conventions and the importance of adhering to BS standards. Students complete an exit ticket by listing three critical checks for their drawings. For homework, they will refine their drawings and upload a PDF to the learning platform.