Design justification CER
Students write a CER justifying their app design choices against user needs and usability principles.
CER with a specific design-claim, persona and feature-list evidence, reasoning linking choices to usability principles, a communication improvement prediction, and design assumptions and limitations.
- 1Do thisStudents write a CER justifying their app design choices against user needs and usability principles.
- 2Use this resource
- 3Submit thisCER: CER with a specific design-claim, persona and feature-list evidence, reasoning linking choices to usability principles, a communication improvement prediction, and design assumptions and limitations.
- 4Submit it here
- 1CMSD website. Go to clevelandmetroschools.org and click the Clever button.
- 2Clever. Clever opens. Sign in if it asks.
- 3Microsoft (district) login. Use your district Microsoft account (the one for school).
- 4Schoology. Open Schoology, then your class, then Assignments, and find the file named below.
The file to submit is named: Principles of Biomedical Technology (Principles of Biomedical Science) › Unit 3.2 to 3.3: Medical surge, mobile response facility, public-health communication, app design concept. › CEROpen Schoology
Read to prepare for today
Vetted sources picked for today's question. Skim these before you take a position or start the work, so your argument and evidence are grounded.
- CER:
- Claim, Evidence, Reasoning — make a claim, back it with evidence, explain your reasoning.
- SOP:
- Standard Operating Procedure — the exact steps to follow (especially in a lab).
- Tracker:
- Your PLTW progress log where you record completed evidence.
- myPLTW:
- The PLTW course site where you do the online activities — you open it through Schoology.
Minute-by-minute · 80-minute block
💡 Big idea: A design is only as justifiable as the user evidence behind it: a CER forces you to prove that each choice serves a real need.
- 0-8 minReview Wednesday personas and wireframe; identify two design choices you can most strongly justify.
- 8-20 minWrite the claim: one sentence stating the design meets target users' surge communication needs.
- 20-42 minWrite evidence: cite persona needs and specific feature-list items as separate evidence points.
- 42-58 minWrite reasoning: link each design choice to a named usability principle.
- 58-70 minWrite prediction and add design assumptions and limitations.
- 70-80 minPeer review: confirm claim is specific, evidence cites persona, limitation is stated.
- • Your team designed an app yesterday; today you write the individual argument for why each choice was the right one.
- • The CER claim must be specific: not 'the design is good' but 'the design meets the communication needs of elderly users during a surge.'
- • Cite the persona and feature list, not just your memory of the discussion.
- • Your prediction tells the reader what will happen differently because of your design, compared to no app at all.
- 1State a claim that the design meets the target users' surge needs.
- 2Cite persona and feature-list evidence tied to specific needs.
- 3Explain reasoning that links each design choice to a usability principle.
- 4Predict how the design improves communication during a surge.
- 5Identify assumptions and limitations in the design process.
- • Write a CER justifying design choices with user-need evidence.
- • Tie choices to usability principles and state one limitation.
- • Design justification means tracing each feature back to a specific persona need and a usability principle.
- • A prediction about improved communication is based on mechanism, not hope: link the feature to the behavior change it enables.
- • Design assumptions include: that the persona is realistic, that users have smartphones, and that the surge scenario is accurate.
Your PLTW work today
Unit 3.2 to 3.3: Medical surge, mobile response facility, public-health communication, app design concept. · Design justification CER
Day 4 of this lesson. Open this exact section in myPLTW (reached through Schoology), then do the work below.
Do this: Open myPLTW and find the Lesson 3.3 Information Sharing design justification or CER activity to use as a writing scaffold.
Submit any platform prompts before shifting to independent CER writing.
Platform prompts done in first 10 minutes; full CER submitted before end of period.
Submitted CER in Schoology is the primary evidence.
All PLTW activities are completed inside the PLTW course environment — this page only gives direction. Submit producibles on Schoology.
Today's PLTW tracker
Check things off as you work, then submit. This tells Mr. Mendoza how you're doing so he can help the class. It does not replace turning in your producible on Schoology.
Use the code Mr. Mendoza gave you, not your name. Saved on this device.
Unit 3.2 to 3.3: Medical surge, mobile response facility, public-health communication, app design concept. · Design justification CER
Open myPLTW and find the Lesson 3.3 Information Sharing design justification or CER activity to use as a writing scaffold.
Platform prompts done in first 10 minutes; full CER submitted before end of period.
This is how Mr. Mendoza sees the class keeping pace with PLTW. Be honest, it only helps if it is accurate.
🎯 Students write a CER justifying their app design choices against user needs and usability principles.
- State a claim that the design meets the target users' surge needs.
- Cite persona and feature-list evidence tied to specific needs.
- Explain reasoning that links each design choice to a usability principle.
- Predict how the design improves communication during a surge.
- Identify assumptions and limitations in the design process.
CER: CER with a specific design-claim, persona and feature-list evidence, reasoning linking choices to usability principles, a communication improvement prediction, and design assumptions and limitations.
Submit on SchoologyUpload by 11:29 PM for full credit.
| Task | Who |
|---|---|
| State a claim that the design meets the target users' surge needs. | _______ |
| Cite persona and feature-list evidence tied to specific needs. | _______ |
| Explain reasoning that links each design choice to a usability principle. | _______ |
| Predict how the design improves communication during a surge. | _______ |
| Identify assumptions and limitations in the design process. | _______ |
Working solo? Put your own name in "Who" for every row.
- Write a CER justifying design choices with user-need evidence.
- Tie choices to usability principles and state one limitation.
Resources & readings
Hand-picked materials for this lesson. Class file items open the document directly; the rest are vetted readings and interactives from other biomedical programs.
WebXam practice
Cumulative WebXam review
A quick mixed-review pulling questions from earlier units plus today, so the WebXam material stays fresh.
Where this leads — careers
What today's skills lead to. These are real health-science careers this course builds toward. Tap one to see, on the US Department of Labor's O*NET site, what the job actually involves, what it pays, and how fast it is growing.
What to do if you were absent
Today is individual PLTW work, so do exactly what we did in class, from home: complete the same PLTW target above, then submit your CER.
Open Schoology (CMSD) and keep goingHow to get there: open the CMSD website, click Clever, sign in with your Microsoft (district) account, then open Schoology from Clever.
Class still runs. Complete the online activity above (it's self-guided). Need the concept taught without a teacher? Use this authoritative explainer:
Ready.gov Emergency PreparednessOptional extra credit (async)
You've passed Unit 2, so the optional extra-credit track is open. Complete reserved-unit work from home (virtual labs included) for extra credit, all submitted on Schoology.
Open the extra-credit track- CompleteEvery required part of the artifact is present, nothing left blank.
- AccurateThe science and the data are correct and match the evidence.
- Scientific reasoningYou explain your claim with evidence and reasoning (CER), not just an answer.
- Professional communicationClear, organized, labeled, and written the way a clinician or scientist would.
- SubmittedTurned in the right way (Schoology for routine work) and confirmed.
Drop your Tue, Dec 8, 2026 · Design justification CER here. Use a clear file name (your initials + project). Routine work still goes to Schoology (via the CMSD portal).
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