Fri, Apr 23, 2027Spring (Semester 2) · Week 14Day 46 of 5780-min blockTight fit

Ventilator allocation ethics debate

Essential question: When there is not enough life support to go around, who decides who breathes, and on what grounds?Enduring understanding: Medicine runs on limited resources, so who gets treated first is never a purely medical question; it is an ethical choice that someone has to defend out loud.

Do now

Students will debate how scarce ventilators should be allocated during a respiratory crisis.

DueTonight, 11:29 PM
Hand in
Written position on ventilator allocation, citing one ethical criterion and naming one genuine tradeoff in triage decisions.
Where
Turn this in at the drop folder with your district Microsoft sign-in, or hand it to Mr. Mendoza in class. Both count as submitted. Doing the activity in myPLTW does not.

You get two school days for every day you were absent, so this deadline moves with you.

Where you are · this course
Unit 3.1 Gas Exchange: Respiratory anatomy, sheep pluck or virtual alternative, lung volumes, spirometry, expedition clearance. Ventilator allocation ethics debate ▸ Day 1
Day 46 of 57 this semester11 left before WebXam
🧬 Where you are · PLTW
Human Body SystemsUnit 3: Adventure Awaits ▸ Lesson 3.1 Cardiopulmonary Connection"Activity 3.1.3 Stayin' Alive"
Activity names confirmed from PLTW's published HBS career-connections and Mr. Mendoza's licensed updated-HBS materials. Mr. Mendoza will confirm the exact numbering in myPLTW once the course shell opens.
Today's driving question

A Cleveland hospital has 8 ventilators and 12 patients who will die without one tonight. Which criteria decide who gets connected, and can you defend your criteria to the four families you turned away?

Today you'll be able to

Students will debate how scarce ventilators should be allocated during a respiratory crisis.

You've got it when
  • Each student defends an allocation criterion.
  • Groups identify one tradeoff in decisions.
Due today · Exit ticket RequiredWritten position on ventilator allocation, citing one ethical criterion and naming one genuine tradeoff in decisions.
Do-Now · start these with your notes closed
  1. In one sentence, what does a ventilator actually do for a patient who cannot breathe on their own?
  2. If a hospital has fewer ventilators than dying patients, name one fact about a patient you would want to know before deciding who gets one.
Do this · step by step
numbered so we can always find our place
  1. 1Read a short scenario on a ventilator shortage.
  2. 2Form groups representing hospital teams.
  3. 3List two ethical criteria for allocating ventilators.
  4. 4Respond to one opposing group's criterion.
  5. 5Write your position with one supporting reason.
Interrupted or lost? Lost your place? Find the ventilator-shortage scenario, then in your notes list your two allocation criteria (step 3), write your one reply to another group's criterion (step 4), and finish with your position plus one reason (step 5).
Optional project open: Power & Balance - solo or group, about 3 to 4 hours total. Due by Fri, May 28, 2027. Great WebXam prep.
The story

What did this day actually feel like?

Ventilator allocation ethics debate

ETHICS DAY The same shape as the transplant question and somehow heavier, because a ventilator decision happens in hours rather than months.

Somebody asked whether you can ever take a ventilator from a patient already on it to give to someone more likely to survive. The room went silent. That is a genuinely different question from who gets the next one and I had not separated them before.

AT HOME, THE NIGHT BEFORE TUE APR 27 Alveoli and gas exchange Oxygen in, carbon dioxide out, both moving by diffusion down their own gradients across a membrane about half a micrometer thick, two flattened cells and their shared basement membrane.

No pump, no energy spent on the exchange itself. The whole system exists to maximize surface area and then get out of the way.

Turned in: annotated gas exchange diagram → Lab Notebooks folder

Fiction. There is no such student. The lessons, labs and dates are the real planned course; the student, the classmates and the conversations are invented.

The comic

The same day, drawn.

Drawing, panel 70: Ventilator allocation ethics debate.

The same shape as the transplant question and somehow heavier, because a ventilator decision happens in hours rather than months.

Panel 70Ventilator allocation ethics debate · 2027-04-23
Read week 14, 5 panels

Fiction. There is no such student. The lessons, labs and dates are the real planned course; the student, the classmates and the conversations are invented.

🛠 Get unstuck · pick your level

Need a running start
Warm up by picturing a patient who is fully awake but whose lungs cannot move enough air on their own; that is who a ventilator is for. Once that patient is real to you, the question of who gets the last machine has real weight.
On track
State two allocation criteria (for example expected survival and functional status), then defend them against one objection a family might raise. Strong work names a criterion AND the reason it is fair, not just the criterion.
Stuck? Get unstuck
If you are catching up, pick just ONE criterion, write the patient it favors and the patient it turns away, and one sentence on why you can live with that trade. One defended criterion beats a list you cannot explain.
Push me further
Argue the hardest case: two patients with identical survival odds, one age 20 and one age 70. Should age break the tie? Take a side and answer the strongest objection to your own view.

🔑 Today's words · 5

alveolusgas exchangetidal volumevital capacityspirometry
+1 more in the word bank

Tap a word in the lesson for a plain meaning and one example. Recycled into next week's Do-Now.

Today's study notebook
The respiratory system: breathing mechanics and gas exchange in the lungs.
Open the notebook
Watch first: today's 1-minute intro
Audio overviewVideo overviewMind mapStudy guideFlashcardsQuizData table
Where this fits
Tested on (Ohio WebXam)
Human Anatomy and Physiology · 072040 (likely, pending confirmation)
PLTW lesson
HBS · Lesson 3.1 Cardiopulmonary Connection
WebXam domain
Human Body Form, Function, and Pathophysiology
Evidence to produce
Exit ticket
Lab / skill
MedlinePlus: Pulmonary function tests
Do the work · 80-minute blockfirst 5 min = hook

💡 Big idea: Because life-support machines are finite, hospitals must set explicit priority rules in advance, so that who receives care is decided by defended criteria rather than by chance or bias.

  1. 0-8Read the ventilator shortage scenario; assign team roles
  2. 8-22Group prep: list 2 ethical allocation criteria from your team's perspective
  3. 22-40Debate round 1: each group presents its strongest criterion
  4. 40-55Challenge round: each group responds to one opposing criterion
  5. 55-70Individual writing: position with one supporting reason
  6. 70-80Share and submit exit ticket
Mr. Mendoza's 5-minute intro
  • During a pandemic surge, hospitals ran out of ventilators and had to decide who would receive the last one.
  • Today you are on the team making that call.
  • There is no answer that feels good, but your reasoning must be principled and consistent.
  • Leave with a written position backed by at least one ethical argument.
Know by the end
  • Ventilators provide mechanical breathing support to patients who cannot breathe independently.
  • frameworks used during crises may include expected survival, age, and functional status.
  • The ethics of crisis standards of care connect to pathophysiology and content on the WebXam.
Open this PLTW section today

Unit 3.1 Gas Exchange: Respiratory anatomy, sheep pluck or virtual alternative, lung volumes, spirometry, expedition clearance. · Ventilator allocation ethics debate

Day 1 of this lesson. Open this exact section in myPLTW (find it in Clever, Microsoft sign-in), then do the work below.

Do this: Continue in Lesson 3.1 Cardiopulmonary Connection on myPLTW and complete the ethics or debate reflection prompt for today's ventilator-allocation activity.

Complete

Mark the activity complete in myPLTW after submitting your ventilator-allocation exit ticket.

How far to get

You completed the cardio portion of Lesson 3.1 last week; this week covers respiratory content within the same lesson, and the task should be checked off today.

Upload as evidence

Note or screenshot of completion status for your tracker.

The official PLTW activity stays inside myPLTW. If myPLTW will not open, use F1 and E1-E3 on this page to complete today's local evidence decision, then make up the official activity when access returns. Turn this in at the drop folder with your district Microsoft sign-in, or hand it to Mr. Mendoza in class. Both count as submitted. Doing the activity in myPLTW does not.

Today's PLTW tracker · fill in and submit

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 through the submission route shown below.

Use the code Mr. Mendoza gave you, not your name. Saved on this device.

Unit 3.1 Gas Exchange: Respiratory anatomy, sheep pluck or virtual alternative, lung volumes, spirometry, expedition clearance.Day 1 of this projectSee the full week plan
Today's PLTW target

Unit 3.1 Gas Exchange: Respiratory anatomy, sheep pluck or virtual alternative, lung volumes, spirometry, expedition clearance. · Ventilator allocation ethics debate

Continue in Lesson 3.1 Cardiopulmonary Connection on myPLTW and complete the ethics or debate reflection prompt for today's ventilator-allocation activity.

You completed the cardio portion of Lesson 3.1 last week; this week covers respiratory content within the same lesson, and the task should be checked off today.

This is how Mr. Mendoza sees the class keeping pace with PLTW. Be honest, it only helps if it is accurate.

1 · What you do today

🎯 Students will debate how scarce ventilators should be allocated during a respiratory crisis.

  • Read a short scenario on a ventilator shortage.
  • Form groups representing hospital teams.
  • List two ethical criteria for allocating ventilators.
  • Respond to one opposing group's criterion.
  • Write your position with one supporting reason.
2 · What you turn in

Exit ticket: Written position on ventilator allocation, citing one ethical criterion and naming one genuine tradeoff in decisions.

Turn this in at the drop folder with your district Microsoft sign-in, or hand it to Mr. Mendoza in class. Both count as submitted. Doing the activity in myPLTW does not. Use the checklist just below and upload by 11:29 PM for full credit. Absent with an excused absence? You get two school days for every day you were absent, so this deadline moves with you.

3 · Who's doing what (team)
TaskWho
Read a short scenario on a ventilator shortage._______
Form groups representing hospital teams._______
List two ethical criteria for allocating ventilators._______
Respond to one opposing group's criterion._______
Write your position with one supporting reason._______

Working solo? Put your own name in "Who" for every row.

4 · Words I can use correctly
5 · I'm successful today when I can…
  • Each student defends an allocation criterion.
  • Groups identify one tradeoff in decisions.
6 · Reflection & next steps
Where are you today?0/7 checked
Pick your period and code first.
Your 4 steps today
  1. 1
    Do this
    Students will debate how scarce ventilators should be allocated during a respiratory crisis.
  2. 2
  3. 3
    Submit this
    Exit ticket: Written position on ventilator allocation, citing one ethical criterion and naming one genuine tradeoff in triage decisions.
  4. 4
    Submit it here
    1. 1Open the drop folder.
    2. 2Sign in with your district Microsoft account, not a personal one.
    3. 3Upload the file, named Lastname_Firstname__Assignment Title.
    4. 4Your own upload panel says Uploaded with a green check: that is your receipt.
    Turn this in at the drop folder with your district Microsoft sign-in, or hand it to Mr. Mendoza in class. Both count as submitted. Doing the activity in myPLTW does not. Human Anatomy & Physiology (Human Body Systems) › Unit 3.1 Gas Exchange: Respiratory anatomy, sheep pluck or virtual alternative, lung volumes, spirometry, expedition clearance. › Exit ticket
    Open the drop folder
Were you absent? Jump to the make-up plan
Learn it · deck, reading, and vocabulary
Socratic teaching slide deck

The deck carries the prior idea forward, lets you inspect an analogy, maps the rule to biology, and ends with the same evidence decision and exit ticket used on this page.

Generated from this lesson's canonical data with a red-team citation check.

Carry forward

Normal ranges exist because healthy hearts cluster around them, so a measurement outside the range signals a specific mechanism gone wrong, which is exactly what a CER's reasoning has to name.

Daily take-home

Because life-support machines are finite, hospitals must set explicit priority rules in advance, so that who receives care is decided by defended criteria rather than by chance or bias.

Inspect the analogy

A bridge prototype is tested against a load limit, cost limit, and user need before revision.

  1. Which requirement is a criterion?
  2. Which limit is a constraint?
  3. What test result should trigger a redesign?
Rule

A design improves when evidence is compared with explicit criteria and constraints.

Where it breaks

Biomedical designs also require , ethics, and biological validation beyond a physical prototype test.

Map the analogy to biology
  • Bridge requirements map to design criteria.
  • Load results map to E1-E3.
  • Revision maps to the next evidence-based iteration.
Read this first

Driving question: A Cleveland hospital has 8 ventilators and 12 patients who will die without one tonight. Which criteria decide who gets connected, and can you defend your criteria to the four families you turned away?

What you already know: Normal ranges exist because healthy hearts cluster around them, so a measurement outside the range signals a specific mechanism gone wrong, which is exactly what a CER's reasoning has to name.

New idea: Because life-support machines are finite, hospitals must set explicit priority rules in advance, so that who receives care is decided by defended criteria rather than by chance or bias.

Visual or model: F1. F1. A lesson illustration or teaching diagram for Ventilator allocation ethics debate. Use it with E1-E3; it is a model or context image, not experimental or patient data. What to notice: Trace the labeled structure, movement, or system relationship that connects form to function.

  1. Observe or measure the relevant feature in Ventilator allocation ethics debate.
  2. Organize the observation with a stable evidence ID.
  3. Apply this rule: A design improves when evidence is compared with explicit criteria and constraints.
  4. Choose the option the evidence supports and state the limit of the conclusion.

Real biomedical example: A Cleveland hospital has 8 ventilators and 12 patients who will die without one tonight. Which criteria decide who gets connected, and can you defend your criteria to the four families you turned away?

What the evidence supports: E1-E3 and F1 support the daily take-home when the response meets the stated success criteria.

What it cannot prove: The package does not support claims beyond this lesson's or any real patient diagnosis.

Vocabulary:
  • : A tiny air sac at the end of an airway in the lung where oxygen enters the blood and carbon dioxide leaves it across a thin wall.
  • : The swapping of oxygen and carbon dioxide between air in the lungs and blood in the capillaries, driven by differences in gas concentration.
  • : The amount of air moved in or out of the lungs in one normal breath at rest, about 500 milliliters in an average adult.
  • : The largest amount of air a person can breathe out after taking the deepest possible breath in, measured to assess lung function.
  • : A breathing test that measures how much air a person can move in and out of the lungs and how fast, used to assess lung function.
  • : The percentage of in the blood that is carrying oxygen, normally about 95 to 100 percent in healthy people.

Use it now: Choose one decision option. Cite E1 and E3, then explain how the rule connects the evidence to your choice.

Go further, optional: The source links below are optional enrichment. Every fact required for today's local evidence decision appears in this lesson package.

Evidence set and decision
E1 · Observation

Ventilators provide mechanical breathing support to patients who cannot breathe independently.

Limit: E1 supplies context or an observation; it does not by itself establish the explanation.

E2 · Mechanism

Because life-support machines are finite, hospitals must set explicit priority rules in advance, so that who receives care is decided by defended criteria rather than by chance or bias.

Limit: E2 is a teaching statement or comparison and must be checked against the task evidence.

E3 · Result

Each student defends an allocation criterion.

Limit: E3 supports only the result or product criterion named here; it cannot justify a broader clinical or causal claim.

PLTW-HAP-2027-04-23 · Simulated classroom evidence scenario

Your role: anatomy and physiology consultant

Decision: Your team must decide what the evidence from Ventilator allocation ethics debate supports before submitting the exit response named on the lesson page.

  • Select the option best supported by E1-E3.
  • Select a reasonable alternative and name the evidence it would require.
  • Delay the claim because the evidence does not distinguish the options.

Response: State one choice, cite at least two evidence IDs, explain the rule that connects them, and add one limitation. Submit it as the exit response.

Claim ceiling: The supplied lesson evidence can support an observation, pattern, classroom mechanism, or next-step decision about Ventilator allocation ethics debate. It cannot by itself prove causation, establish a real clinical diagnosis, or justify action outside this classroom task.

Composite case file · PLTW-HAP-2027-04-23

Reason for review: Your team must decide what the evidence from Ventilator allocation ethics debate supports before submitting the exit response named on the lesson page.

Context: Medicine runs on limited resources, so who gets treated first is never a purely medical question; it is an ethical choice that someone has to defend out loud.

Timeline:
  • T1: Read a short scenario on a ventilator shortage.
  • T2: Form groups representing hospital teams.
  • T3: List two ethical criteria for allocating ventilators.
  • T4: Respond to one opposing group's criterion.
  • T5: Write your position with one supporting reason.
Evidence records:
  • E1: Ventilators provide mechanical breathing support to patients who cannot breathe independently.
  • E2: Because life-support machines are finite, hospitals must set explicit priority rules in advance, so that who receives care is decided by defended criteria rather than by chance or bias.
  • E3: Each student defends an allocation criterion.

Measurements: Use only the measurements, units, graph, or counts supplied in today's task. No additional patient measurement is implied.

Figure finding: Teaching diagram for Ventilator allocation ethics debate. Trace the labeled structure, movement, or system relationship that connects form to function. This is a teaching model, not patient or experimental data.

Uncertainty: This is a composite classroom scenario. Missing history, measurements, or confirmation tests remain unknown and limit the conclusion.

Math moment
Formula or setup

Rate or percent = part / comparison total x 100%. Percent change = (new - comparison) / comparison x 100%.

Worked parallel example

If 18 of 60 records meet a condition, the frequency is 18 / 60 x 100% = 30%.

Units and reasonableness

Name the comparison total. A percent describes the supplied group and does not automatically predict an individual's outcome.

Try it with today's data

Use today's supplied counts to calculate one rate, risk, frequency, or percent change. Show the denominator and interpretation.

Design record
Criteria
  • The solution must address the stated need in Ventilator allocation ethics debate.
  • The decision must be supported by E1-E3.
  • The final product must make the success criteria visible.
Constraints
  • Complete the work inside the 80-minute block.
  • Use only supplied or teacher-approved materials and evidence.
  • Do not trade , accessibility, or privacy for speed.
Tradeoff weights
  • and evidence quality: must pass before scoring other criteria.
  • User need and effectiveness: highest scored criterion.
  • Time, cost, and ease of use: compare only after and effectiveness pass.

Test evidence: For each option, record the E1-E3 result that supports or fails each criterion. Do not assign a score without a named observation.

Iteration log
  1. Version or option tested
  2. Criterion met or missed
  3. Evidence ID and result
  4. Revision made
  5. Reason for the revision
Decision record
  1. Need and user
  2. Criteria and constraints
  3. Chosen option and evidence
  4. Test result
  5. Revision and reason
Watch the trap

Students often think Students often assume the fair answer is always 'first come, first served,' as if arrival time is neutral and therefore just.. The trap: First-come-first-served is not neutral, because it quietly rewards whoever had a car, insurance, or a nearby hospital, and it ignores who is most likely to survive; crisis frameworks exist precisely so the choice is defended by criteria, not by luck of arrival.

Worked example · a parallel case (guides, does not reveal)
Worked CER on a parallel case (donor kidney allocation)
Completes: Parallel model of the crisis-ethics debate target: a written position on a different scarce-resource allocation problem (donor kidney transplant lists), citing one ethical criterion and naming one genuine tradeoff, so students can see the CER format and depth without seeing tonight's ventilator answer.

Parallel case (NOT tonight's prompt): A transplant center has one donated kidney available and three patients on the waiting list who are all medical matches. Using the same position format we will use tonight, here is a worked model on a different scarce-resource problem so you can see the structure, not the answer.

My position: When one donor kidney must go to one of several matched patients, I would allocate it primarily by expected graft survival, meaning how many years the transplanted kidney is likely to keep working in that patient.

Ethical criterion: Expected benefit from the organ, because a donated kidney is a rare and non-renewable gift, and directing it to the patient who is likely to keep it functioning longest produces the most total years of healthy life from that single organ.

Tradeoff I acknowledge: This criterion can push older patients or patients with other health problems lower on the list, even though their need may be just as urgent and their lives just as valuable. Choosing the patient with the best long-term outcome can therefore feel like ranking people by how useful their bodies are rather than by fairness or by who has waited longest. That tension between getting the most benefit from a scarce organ and treating every waiting patient as an equal is the hardest part of allocation.

Why this matters

This model shows the level of evidence and organization needed to complete: Parallel model of the crisis-ethics debate target: a written position on a different scarce-resource allocation problem (donor kidney transplant lists), citing one ethical criterion and naming one genuine tradeoff, so students can see the CER format and depth without seeing tonight's ventilator answer.

Build yours step by step
  1. Name the prompt or task.
  2. Answer it directly with the key evidence.
  3. Check that the response matches the requested format.
Change it for a new task

Keep the structure. Replace the question, facts, measurements, and evidence. Then recheck units, vocabulary, and whether the conclusion goes beyond the evidence.

Also due today: Record two points for each side of the triage-team debate before you submit.

See the full worked example
Portal terms
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. Find it in Clever with your Microsoft sign-in, right next to Schoology.
This unit's vocabulary
/spy-ROM-ih-tree/

Tap the speaker to hear a term. Add two of these to your notebook glossary with a definition and an example in your own words.

Build your vocabulary · optional, for extra credit

Pick just 2 or 3 words from today and make them yours: write what each one means in your own words, name the context clue or evidence that helped, then give one example from what you actually did in Ventilator allocation ethics debate. Try your own words first; the glossary is there if you get stuck. This is voluntary and counts as extra credit, so keep it short.

alveolus
gas exchange
tidal volume
vital capacity
spirometry
oxygen saturation

Saved on this device. Show Mr. Mendoza or add these to your notebook glossary to claim the extra credit.

Resources & readings

Hand-picked readings, videos, and interactives for this lesson, all free and from authoritative open organizations (NIH, CDC, OpenStax, Khan Academy, PhET, HHMI, and more).

Unit notebook (fillable)

A fillable, Cornell-style notebook for Unit 3: Adventure Awaits. Type your notes, cues, and summaries right in the PDF, or print it and write by hand. Each lesson page has a cue column, a notes column, and a summary box, plus dated lab-record pages you can turn in.

HBS Unit 3 notebook: Adventure Awaits Fillable PDFCornell notes + lab recordsOpen
Resources & readings

Vetted readings and references for this unit. Use them to prepare, to catch up if you were absent, or to go deeper on today's target.

Check yourself · commit, then reveal

Claim ceiling for this check: The supplied lesson evidence can support an observation, pattern, classroom mechanism, or next-step decision about Ventilator allocation ethics debate. It cannot by itself prove causation, establish a real clinical diagnosis, or justify action outside this classroom task.

Quick self-check · commit, then reveal

A triage team proposes 'give the ventilator to whoever is most likely to survive the illness.' Name one strength and one real danger of that single criterion.

How sure are you?

Write an answer and pick a confidence to unlock the key.

Cumulative WebXam review · flash practice

Fast retrieval with instant answers, not the commit-then-reveal check above. Try each from memory first: write what you remember about the earlier units, then check yourself here.

Tap an answer to check it · nothing is recorded or graded
[Review: Research Model: model organisms, C. elegans, and reading the literature] Increasing the sample size in a study generally:
[Review: Challenge Accepted: a model-organism investigation into heavy metals] Identifying the limitations of an experiment is important because it:
[Review: Cardiopulmonary Connection: heart structure and reading an EKG] Blood pressure is typically reported as two numbers representing:
Gas exchange between air and blood in the lungs takes place in the:
Go further and get help
Where this leads: careers
What to do if you were absent
Today was a debate: do this instead

Debate whether ventilator allocation should weigh survival odds over first-come order; record two points per side.

Then submit your Exit ticket. Turn this in at the drop folder with your district Microsoft sign-in, or hand it to Mr. Mendoza in class. Both count as submitted. Doing the activity in myPLTW does not.

If MR. MENDOZA is absent

Class still runs. Complete the online activity above (it's self-guided). Need the concept taught without a teacher? Use this authoritative explainer:

MedlinePlus: Pulmonary function tests
Optional extra credit (async)

You've passed Unit 2, so the optional extra-credit track is open. Complete reserved-unit work from home, including virtual labs, for extra credit. Each item shows its correct submission route.

Open the extra-credit track
How this is graded
For: Exit ticket: Written position on ventilator allocation, citing one ethical criterion and naming one genuine tradeoff in triage decisions.
  • Complete
    Every required part of the artifact is present, nothing left blank.
  • Accurate
    The science and the data are correct and match the evidence.
  • Scientific reasoning
    You explain your claim with evidence and reasoning (CER), not just an answer.
  • Professional communication
    Clear, organized, labeled, and written the way a clinician or scientist would.
  • Submitted
    Turned in the right way, on the class site or handed to Mr. Mendoza in class, and confirmed. Not in Schoology: that is where the report-card grade appears later.