Western Governors University

D654: Prototyping and Iterating I

A guide to the WGU B.S. User Experience Design course on usability testing and improving a mock-up with feedback.

Updated October 2026 · 5 min read

D654 is a design course in WGU's Bachelor of Science in User Experience Design, placed in term seven of the standard path.

The program guide says it focuses on usability testing to create user-centered digital products. Tools and techniques include planning and conducting a usability study and iterating on a mock-up that applies visual design principles.

Students collaborate to gather feedback to improve the mock-up, and the course produces industry artifacts for a professional portfolio.

The challenge is rigor. A usability study needs a clear plan, honest observation and changes that follow from the results.

Course at a Glance

ItemDetails
UniversityWestern Governors University (WGU)
Code and titleD654, Prototyping and Iterating I
ProgramB.S. User Experience Design
LevelUndergraduate
Subject areaUsability testing and mock-up iteration
Typical workUsability study plan, findings and an improved mock-up

What D654 Covers

The guide lists two competencies:

Competency (summarized)What it asks of you
Conduct usability testing on a UX wireframePlan, run and record a study
Create a UX mock-up incorporating constructive feedbackRevise the design using what you found

Key Concepts Explained

Planning a Usability Study

A plan states what you want to learn, who will take part, what tasks they will attempt and how you will record results. Tasks should be realistic and not reveal the answer.

Example: Goal: can users find and book an appointment? Task: "You need an appointment next week. Show me how you would book one." Measures: completion, time and points of hesitation.

From Findings to Changes

Group observations into themes, rate how serious each problem is and fix the most severe first. Record what you changed and why.

Example: Three of five testers missed a small "Book" link. The designer enlarges the button, moves it above the fold and notes the change in the iteration log.

Typical Assignments and How to Approach Them

Task typeWhat it testsHow to approach it
Usability test planMethod designState goals, participants, tasks and measures
Test findingsObservation and analysisReport patterns and quote what users did or said
Mock-up revisionApplying feedbackShow before and after for each change
RationaleReasoningLink each change to a finding and a design principle

Running a Study Honestly

Observe rather than help. If participants struggle, note where and why instead of guiding them. Record results as they happened, including problems that do not fit your hopes for the design.

A Dependable Order of Work

  1. Write the goals and tasks for your usability study.
  2. Run the sessions and record observations.
  3. Group findings and rate their severity.
  4. Revise the mock-up, starting with the most serious problems.
  5. Write the rationale, linking each change to a finding.

This sequence turns testing into evidence, and evidence into design decisions.

What a Strong Submission Looks Like

Where D654 Fits in the Program

D654 is placed in term seven of the B.S. User Experience Design standard path, followed by Prototyping and Iterating II in term eight. The wireframe from earlier design work is what you test here, and the improved mock-up is the starting point for the high-fidelity prototype.

Keep a clear version history, since you will need to explain how your design changed from one course to the next.

Where Students Get Stuck

Study Tips for D654

How We Help with D654

Send your brief, rubric and any notes from your own testing. We can tutor you on study design, prepare a model write-up, or edit your report for clarity. We never invent test results.

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 study, design and findings must be your own. GradeEssays is independent of Western Governors University and cannot promise results.

Plan Your Usability Study

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

Start My D654 Help

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

Frequently Asked Questions

Where does D654 appear?

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

How many competencies are listed?

Two: conducting usability testing, and creating a mock-up that incorporates feedback.

Do I need to test with real people?

Follow your task instructions, which set who may take part and how.

Does the course produce portfolio work?

Yes, the description says it produces industry artifacts for a professional portfolio.

Can you run my usability study?

No. We provide tutoring, model examples and editing; the study and results must be your own.

What should my report include?

Goals, participants, tasks, findings, changes and rationale.