Unit challenge: the final engineering decision
Unit 4 · Common specialist technical principlesOptimise a product for strength, sustainability and scale. Bringing forces, functionality, footprint, the six Rs and scale together, with a 9-mark evaluate question and model answer. Click-by-click builds, answer reveals, and teacher notes and answers on every slide.
What this lesson covers
Bringing forces, functionality, footprint, the six Rs and scale together, with a 9-mark evaluate question and model answer. Click-by-click builds, answer reveals, and teacher notes and answers on every slide.
60-minute lesson, 18 slides. Part of DT Classroom’s GCSE Design and Technology course, taught through an interactive 3D lab rather than static slides alone.
Practise and extend
Also available for this lesson from the teacher resources: lesson slides, knowledge organiser, worksheet.
Exam board coverage
Where this lesson sits in each GCSE Design and Technology specification, as an indicative mapping by DT Classroom (not endorsed by any board - check the current specification before relying on it).
| Board | Specification reference |
|---|---|
| AQA | 3.2 Specialist technical principles (overview) |
| Edexcel | 2.3 Metals: Factors influencing material selection 3.3 Papers and boards: Factors influencing material selection 4.3 Polymers: Factors influencing material selection 5.3 Systems: Factors influencing material selection 6.3 Textiles: Factors influencing material selection 7.3 Timbers: Factors influencing material selection 2.4 Metals: Forces and stresses; reinforcement and stiffening 3.4 Papers and boards: Forces and stresses; reinforcement and stiffening 4.4 Polymers: Forces and stresses; reinforcement and stiffening 5.4 Systems: Forces and stresses; reinforcement and stiffening 6.4 Textiles: Forces and stresses; reinforcement and stiffening 7.4 Timbers: Forces and stresses; reinforcement and stiffening |
| OCR | 5.2 Factors in selecting materials and system components 8.1 Cost and availability of materials and components |
| WJEC Eduqas | TP5 Materials |
See the full specification map for every lesson and every board.
Other lessons in Common specialist technical principles
DT Classroom is a GCSE Design and Technology course: interactive 3D lessons, teacher slide decks, worksheets and exam practice, built for pupils and teachers. Exam board references above are DT Classroom’s own indicative mapping, not provided or endorsed by AQA, Pearson Edexcel, OCR or WJEC Eduqas.