Core Concepts & Theory

The Internal Assessment (IA) Design Project is a comprehensive documentation process that demonstrates your design thinking and problem-solving abilities through systematic inquiry and creative development.

Key Terminology

Design Brief: A concise statement identifying the problem, target audience, and design opportunity. It answers "What needs to be designed and for whom?"

Design Specification: Measurable criteria against which the final product will be evaluated. These include performance requirements, constraints (time, materials, cost), and success metrics.

Iterative Design Process: A cyclical approach involving continuous refinement through testing, evaluation, and modification. Not linear but recursive.

Formative Testing: Ongoing evaluation during development to inform design decisions and improvements.

Summative Evaluation: Final assessment measuring how well the solution meets specification criteria.

Primary Research: First-hand data collection (surveys, interviews, observations, testing).

Secondary Research: Existing information from books, journals, websites, or product analysis.

Documentation Framework

Your IA follows the design cycle: Inquiring & Analyzing → Developing Ideas → Creating the Solution → Evaluating. Each stage requires specific evidence:

• Analysis: Research findings, specification development
• Development: Sketches, CAD models, prototype iterations
• Creation: Manufacturing logs, photographic evidence, technical drawings
• Evaluation: Testing results, client feedback, reflective commentary

Remember: Documentation should be concurrent with the design process, not retrospective. The examiner wants to see your thinking evolve, including wrong turns and corrections.

Formula for Success = Depth of Analysis + Quality of Development + Technical Execution + Critical Evaluation

Detailed Explanation with Real-World Examples

The Documentation Journey

Think of your IA documentation as a design autobiography—it tells the story of how your solution evolved. Professional designers at firms like IDEO or Dyson maintain similar records called "design portfolios" to justify decisions to clients and stakeholders.

Real-World Connection: The Dyson Vacuum Story

James Dyson created 5,127 prototypes before perfecting his bagless vacuum. His documentation tracked:

• Each iteration's performance data
• Why modifications were needed
• Technical drawings showing cyclone improvements
• Testing results comparing suction power

Your IA mirrors this professional practice on a smaller scale.

Practical Application: Sustainable Phone Case Design

Scenario: Designing an eco-friendly phone case for teenagers.

Research Phase (Real-world parallel: Market research):

• Survey 30 students about current case problems
• Analyze 5 existing products for materials and durability
• Investigate biodegradable materials (PLA, bamboo composite)

Development Phase (Like prototyping at Apple):

• Sketch 6 concepts with annotations explaining material choices
• Create CAD models testing ergonomics
• 3D print prototype, test drop resistance from 1.5m
• Document failures: "Corner cracked at 1.2m—needs reinforcement"

Evaluation Phase (Similar to product launch assessment):

• User testing: 10 students rate comfort, aesthetics, protection
• Compare against specification: "Target: biodegradable within 2 years. Result: PLA degrades in 6-24 months—SUCCESS"

Analogy: Your IA is like a recipe book that doesn't just list ingredients but explains why each ingredient matters, shows photos of each cooking stage, and honestly discusses when the soufflé collapsed.

Worked Examples & Step-by-Step Solutions

Example 1: Writing a Design Specification

Question: Create a design specification for a study lamp for university students.

Solution:

Step 1: Identify categories (Function, Ergonomics, Aesthetics, Materials, Safety)

Step 2: Make criteria measurable and justified

1. Function: "Must provide 500-750 lumens adjustable lighting for reading (CAM specification: desk work requires minimum 500 lux)"
2. Ergonomics: "Height adjustable 30-50cm; flexible arm with 180° rotation to prevent neck strain during 3+ hour study sessions"
3. Safety: "LED bulbs generating <40°C surface temperature (UK safety standard); cable management to prevent trip hazards"
4. Cost: "Manufacturing cost ≤£25 to retail at £40-50 (student budget research: 73% willing to pay £40-60)"
5. Sustainability: "80% recyclable materials; energy consumption <10W (EU energy rating A+)"

Examiner Note: Notice each criterion has numbers, justification, and links to research.

Example 2: Documenting Design Development

Question: Present iterative development of a bottle opener design.

Solution:

Iteration 1: Sketch basic lever mechanism. Annotation: "Traditional design—functional but requires 15N force (user testing data)"

Iteration 2: Added extended handle (+5cm). Testing result: "Force reduced to 8N—improvement but aesthetically bulky"

Iteration 3: Compound lever system. Technical drawing with measurements. "Force now 6N, length reduced to 12cm—meets specification (<10N force, <15cm size)"

Manufacturing Plan: Material: stainless steel 304; Process: CNC milling then polishing; Quality control: force testing each unit

Examiner Note: Shows clear progression with quantitative evidence and justified decisions.