Chapter 4: Web and Media Design · Term 1
Lesson 4-4 explained: The Iterative Improvement Process for Websites
Improve in loops: PDCA (Plan, Do, Check, Act) for continuous improvement, design thinking (Empathize, Define, Ideate, Prototype, Test) from the user's side, and A/B testing to settle one change with data.
Lesson summary
A first version is only a guess, so teams improve continuously rather than once.
Takeaway: Improve in loops: PDCA (Plan, Do, Check, Act) for continuous improvement, design thinking (Empathize, Define, Ideate, Prototype, Test) from the user's side, and A/B testing to settle one change with data.
Key terms
- PDCA cycle
- Continuous improvement
- Design thinking
- A/B testing
- Prototype
- Iterate
Textbook page: Arabic book 87 · English book 95
Video lesson

Languages review: encryption, MFA, web design, A/B testing and AI ethics
Free questions on this lesson
From the textbook question bank. Think of the answer first, then open it.
1. Why is a website never truly "finished" after launch?
- The law forces a site redesign every month
- Browsers delete old websites automatically every single year
- The first version is a guess; teams learn after real use
- The server stops working soon after launch
Answer
Correct answer: The first version is a guess; teams learn after real use
The first version is only a best guess; the team learns what works after real people use it.
The iterative improvement process (Key fact) · page 96
2. "The PDCA cycle is complete after one run." This statement is:
- True; the cycle ends with the Act step
- False, because the cycle starts with Check
- True, if the change works the first time
- False; the cycle matters when it is repeated
Answer
Correct answer: False; the cycle matters when it is repeated
The PDCA cycle is meaningful when repeated; it is not complete after one run.
Worked example · page 98
3. Which of these is NOT a suitable way to run an A/B test?
- Preparing two versions and comparing them
- Showing each version to real users
- Changing several elements at the same time
- Deciding after enough data is collected
Answer
Correct answer: Changing several elements at the same time
Changing several elements at once hides which change caused the result. The other options are correct.
3. A/B Testing · page 97
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Lessons in this chapter 4: Web and Media Design
- 4-1 Types and Characteristics of Media
- 4-2 Information Design and User Experience for Websites
- 4-3 Methods for Evaluating Websites
- 4-4 The Iterative Improvement Process for Websites