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IED Unit 5 • Lesson 5.12

Prototype Testing and User Feedback

Focus question: What evidence shows whether a prototype is successful for the user?

Mission Briefing

Today’s Plan

Use this page with the lesson presentation, your engineering notebook, and the tools or evidence assigned for Collect Prototype and User Evidence.

Learning Targets

  • Run tests according to the protocol.
  • Collect user feedback, observations, measurements, or performance data.
  • Record results honestly, including problems or limitations.

Success Looks Like

You can run prototype tests, collect user feedback, and record evidence without changing the results.

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Opening Prompt

What evidence shows whether a prototype is successful for the user?

Connect your response to the decision, evidence, or quality standard required for Collect Prototype and User Evidence.

Reveal: useful engineering move

This lesson is ready to move forward when the evidence meets this standard: The evidence is complete, ethically collected, and traceable to the approved plan.

Core Skill

What We Are Practicing

Key Idea 1

Testing should reveal the truth, not prove the team was right.

Key Idea 2

User feedback can show needs that performance data may miss.

Key Idea 3

Honest evidence makes revision stronger.

Your Task

Collect Prototype and User Evidence

Run the approved tests and feedback activities while recording results, observations, comments, and limitations accurately.

  1. Complete the setup and safety check.
  2. Run the planned performance trials.
  3. Collect feedback without leading the participant.
  4. Record unexpected results and limitations without deleting unsuccessful evidence.

Quality check: The evidence is complete, ethically collected, and traceable to the approved plan.

Lesson Interactive

Interpret Prototype Test Results

Use the trial data and user comments together. A design can meet a performance target while still revealing a usability issue.

Completion-time trials

Trial 18.4 s
Trial 28.8 s
Trial 38.1 s
Trial 48.6 s
Trial 58.3 s
Mean

Performance target: mean time ≤ 9.0 s.

Choose the evidence-based conclusion

Calculate the mean and compare it with the target, then identify the repeated user-feedback theme.
What You Will Submit

Capstone Test Evidence

  • The completed test-data and user-feedback record.
  • One photo or observation log documenting the session.

Submission standard: The evidence is complete, ethically collected, and traceable to the approved plan.

Resources

Lesson Resources

Presentation

Lesson 5.12 PowerPoint

Use the lesson slides for guided practice, interactive checks, and the exit ticket.

Course Hub

Introduction to Engineering Design

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