Prototype evaluation CER
Students write a CER evaluating prototype performance and proposing a design iteration.
CER stating whether the prototype met its design goal, citing averaged trial data and variable-control evidence, explaining design strengths and flaws, proposing a specific iteration with a predicted result, and stating test-data limitations.
- 1Do thisStudents write a CER evaluating prototype performance and proposing a design iteration.
- 2Use this resource
- 3Submit thisCER: CER stating whether the prototype met its design goal, citing averaged trial data and variable-control evidence, explaining design strengths and flaws, proposing a specific iteration with a predicted result, and stating test-data 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 4.1 Innovation, Inc.: Engineering design, device/vessel model, CAD concept, prototype testing, disease prevention. › 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: Evaluating a prototype honestly, including its failures, is what drives the next iteration: a CER that only reports success is incomplete.
- 0-8 minReview Wednesday data table: confirm average performance and trial variability.
- 8-20 minWrite the claim: one sentence stating whether the prototype met its design goal.
- 20-42 minWrite evidence: cite average trial data, controlled variables, and one variability observation.
- 42-58 minWrite reasoning: link data to design strengths and flaws.
- 58-70 minWrite the iteration proposal (one variable to change, predicted outcome) and test-data limitations.
- 70-80 minPeer review: confirm claim addresses the design goal, data is cited specifically, iteration predicts a result.
- • You collected the data Wednesday; now you write the formal argument about what it means for the device design.
- • The claim must address the design goal directly: did the prototype meet the specification or not?
- • The iteration you propose is the most practically valuable part of this CER: it says what you would do next.
- • Your limitation should explain why the Wednesday data might not generalize to a real clinical use case.
- 1State a claim about whether the prototype met its design goal.
- 2Cite trial data and variable control as evidence.
- 3Explain reasoning that links the data to the design's strengths and flaws.
- 4Propose one iteration to improve performance.
- 5Identify assumptions and limitations in the test data.
- • Write a CER evaluating prototype performance with trial data.
- • Propose a specific iteration and state one limitation.
- • A prototype evaluation CER claim states whether the device met the specified design goal, not whether it was 'good.'
- • Trial data is the primary evidence: average performance and trial-to-trial variability both belong in the evidence section.
- • An iteration proposal changes one variable based on the data; it should predict what the next trial result will be.
Your PLTW work today
Unit 4.1 Innovation, Inc.: Engineering design, device/vessel model, CAD concept, prototype testing, disease prevention. · Prototype evaluation 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 4.1 Designing the Future prototype evaluation 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 4.1 Innovation, Inc.: Engineering design, device/vessel model, CAD concept, prototype testing, disease prevention. · Prototype evaluation CER
Open myPLTW and find the Lesson 4.1 Designing the Future prototype evaluation 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 evaluating prototype performance and proposing a design iteration.
- State a claim about whether the prototype met its design goal.
- Cite trial data and variable control as evidence.
- Explain reasoning that links the data to the design's strengths and flaws.
- Propose one iteration to improve performance.
- Identify assumptions and limitations in the test data.
CER: CER stating whether the prototype met its design goal, citing averaged trial data and variable-control evidence, explaining design strengths and flaws, proposing a specific iteration with a predicted result, and stating test-data limitations.
Submit on SchoologyUpload by 11:29 PM for full credit.
| Task | Who |
|---|---|
| State a claim about whether the prototype met its design goal. | _______ |
| Cite trial data and variable control as evidence. | _______ |
| Explain reasoning that links the data to the design's strengths and flaws. | _______ |
| Propose one iteration to improve performance. | _______ |
| Identify assumptions and limitations in the test data. | _______ |
Working solo? Put your own name in "Who" for every row.
- Write a CER evaluating prototype performance with trial data.
- Propose a specific iteration 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.
Lab & supplies
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:
PhET: simulations for engineering and physical testingOptional 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 15, 2026 · Prototype evaluation CER here. Use a clear file name (your initials + project). Routine work still goes to Schoology (via the CMSD portal).
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