Learning objective
Explain problem, requirements, and design, reproduce the worked example and justify a decision in the case study.
Before you begin
Read a short instruction; for calculations, add, subtract and multiply.
Understand
A good product begins with understanding the user, constraint, and expected outcome.
Worked example
A school app should work on phones and slow connections when those are real constraints.
Analysis and common mistakes
A requirement describes a verifiable user outcome. A constraint limits solutions. An acceptance criterion turns a vague intention into testable behaviour.
Case study — reasoning
Replace “fast app” with “a downloaded worksheet remains readable in airplane mode”. Test download, disconnection and reopening; an offline icon does not prove this behaviour.
Knowledge check
Summary
A good product begins with understanding the user, constraint, and expected outcome.
Sources for further study and verification
AI-assisted draft · Educator review not completed · Unofficial supplementary resource