Western Governors University

D655: Prototyping and Iterating II

A guide to the WGU B.S. User Experience Design course on high-fidelity prototypes, design critique and a responsive website prototype.

Updated October 2026 · 5 min read

D655 is a design course in WGU's Bachelor of Science in User Experience Design, placed in term eight of the standard path.

WGU says it applies the knowledge from Prototyping and Iterating I. Students collaborate in design critique sessions to gather and incorporate feedback and design a high-fidelity prototype, applying visual design principles and accessibility considerations to ensure functionality and user interaction.

The course includes building a prototype for a responsive website as part of the Google UX Design Professional Certificate, which can go into the student's professional portfolio.

It is demanding because polish, accessibility and the ability to respond to critique all count.

Course at a Glance

ItemDetails
UniversityWestern Governors University (WGU)
Code and titleD655, Prototyping and Iterating II
ProgramB.S. User Experience Design
LevelUndergraduate
Subject areaHigh-fidelity prototyping and critique
Typical workInteractive prototype, critique records and design rationale

What D655 Covers

The guide lists two competencies:

Competency (summarized)What it asks of you
Create an interactive, high-fidelity prototype by iterating on a peer-critiqued experienceRefine the design using critique
Collaborate in design critique workshopsGive and use feedback on UX projects

Key Concepts Explained

High-Fidelity Prototypes

A high-fidelity prototype looks and behaves much like the final product, with real typography, color, imagery and interactions. It allows realistic testing of both look and flow.

Example: A responsive site prototype shows how the navigation collapses to a menu on a phone and how buttons react when pressed.

Critique and Accessibility

Critique focuses on the design, not the person. Accessibility means people with different abilities can use it, such as with sufficient contrast, readable text, clear focus states and alternative text.

Example: A reviewer notes light gray text on white is hard to read. The designer darkens it, checks contrast and records the change in the iteration log.

Typical Assignments and How to Approach Them

Task typeWhat it testsHow to approach it
High-fidelity prototypeVisual and interaction designKeep styles consistent and check each screen size
Critique participationCollaborationGive specific feedback and record what you received
Iteration recordUse of feedbackShow each critique point and your response
RationaleReasoningLink choices to principles and accessibility

Designing for Several Screen Sizes

A responsive prototype shows how layout adapts to screen width. Plan at least a phone and a desktop view, and explain how content reflows, how navigation changes and how touch targets stay easy to use.

A Dependable Order of Work

  1. Start from the improved mock-up and its feedback history.
  2. Prepare for critique with clear questions for reviewers.
  3. Record each critique point and decide what to change.
  4. Build the high-fidelity, responsive prototype and check accessibility.
  5. Write the rationale explaining what changed and why.

Keeping a log as you go makes the final write-up much easier.

What a Strong Submission Looks Like

Where D655 Fits in the Program

D655 is placed in term eight of the B.S. User Experience Design standard path, directly after Prototyping and Iterating I. The mock-up and the feedback you gathered there feed straight into this course.

Because the course includes a responsive website prototype for the Google UX Design Professional Certificate, check your course materials for exactly what is expected and how it is submitted.

Where Students Get Stuck

Study Tips for D655

How We Help with D655

Send your brief, rubric and critique notes. We can tutor you on rationales and accessibility reasoning, prepare a model write-up, or edit your text for clarity. We do not build prototypes or certificate work for submission.

Work is original, plagiarism-checked and covered by free revisions within the scope of your original request. It supports your learning within WGU's academic integrity rules; the design must be your own. GradeEssays is independent of Western Governors University and cannot promise results.

Polish Your Prototype Write-up

Share the brief and rubric. We provide tutoring, a model write-up and editing support.

Start My D655 Help

Free revisions · Full refund if late · Written from scratch for your order

Frequently Asked Questions

Where does D655 appear?

In term eight of the B.S. User Experience Design standard path.

How many competencies are listed?

Two: creating an interactive high-fidelity prototype, and collaborating in design critique workshops.

Is a Google certificate involved?

The description says the course includes building a responsive website prototype as part of the Google UX Design Professional Certificate.

Do I need a responsive design?

Yes, the course includes a responsive website prototype.

Can you build my prototype?

No. We provide tutoring, model examples and editing of your writing; the design must be your own.

What does critique involve?

Collaborating with peers to gather feedback and using it to improve the design.