IA Day 18 —
Criterion D Audit & Finish
Assemble the development story: multiple testing/refinement cycles plus comprehensive formal drawings of the intended solution.
By the end of class, you should be able to…
Audit development evidence
Make multiple model-test-refine cycles obvious.
Audit testing breadth
Ensure all specifications and intended-user needs are addressed.
Audit drawings
Check formal manufacturer-facing communication.
Finish Criterion D
Convert scattered evidence into a coherent design-development story.
Fidelity-model cycles
Annotated drawings/photos/CAD showing model → test → refine through intended-user testing.
Formal drawings
Assembled, exploded and orthographic drawings with dimensions, proportions and assembly.
Words
Criterion D is highly visual; concise written explanation supports the evidence.
Words max each
Longer annotations are treated as descriptive text for word-count purposes.
Model photos only
Images without test evidence or analysis do not show development.
One test cycle
Criterion D expects multiple testing and refinement cycles.
Missing user
User-related requirements need intended-user testing/evidence where appropriate.
Pretty render only
Formal manufacturing drawings still need dimensions, components and assembly.
Built and used for testing/evaluation.
Model → test → refine is visible more than once.
Testing/evaluation addresses the full design specification.
Testing includes the intended user where relevant.
Assembled + exploded + orthographic + dimensions/proportions/assembly.
Visual evidence is readable and annotations stay within the rule.
The mini-lesson is short. The evidence-making is the lesson.
Add the test/result/refinement connection beside the relevant visual.
Use genuine evidence; acknowledge model limitations honestly.
Check dimensions, components, assembly and manufacturer readability.
Keep image resolution and text legibility high enough for assessment.
Criterion D answers: “How did the solution become good enough?”
Criterion E answers: “What is the intended redesign solution, what are its key features, and how does it improve on the original product?”
Before you leave…
IA Day 19 — Criterion E: Present the Intended Solution
Keep the evidence chain moving: user → research → decision → test.
Criterion D evidence: annotated visual evidence of multiple testing/refinement cycles through intended-user testing, approximately six A4 pages or equivalent; formal assembled, exploded and orthographic annotated drawings with dimensions, proportions and assembly, approximately four A4 pages or equivalent; recommended Criterion D word count 300; physical fidelity model required for the design project.