Recommendation CER
Do now
Students write a CER that recommends a diagnosis and next steps from synthesized evidence.
- Hand in
- CER with a specific diagnostic claim, multi-source evidence from the workup, reasoning linking each evidence point to the claim, a next-steps recommendation, and one stated limitation.
- 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.
For your patient, can you write a claim that names one specific condition, back it with history plus a lab value plus one more data type, and say out loud what could still prove you wrong?
Students write a CER that recommends a diagnosis and next steps from synthesized evidence.
- • Write a CER with a clear diagnostic claim and multi-source evidence.
- • Recommend appropriate next steps and state at least one limitation.
- What is the difference between naming a symptom cluster and naming an actual diagnosis?
- In a CER, what job does the 'reasoning' do that the 'evidence' does not?
- 1State a claim naming the most likely diagnosis for the patient.
- 2Cite specific history, vital, lab, and genetic evidence that support the claim.
- 3Explain reasoning that connects each evidence point to the diagnosis.
- 4Recommend confirmatory tests or referrals to reduce remaining uncertainty.
- 5Name assumptions and limitations that could change the recommendation.
🛠 Get unstuck · pick your level
🔑 Today's words · 5
Tap a word in the lesson for a plain meaning and one example. Recycled into next week's Do-Now.
Do the work · 80-minute blockfirst 5 min = hook▸
💡 Big idea: A recommendation earns trust because it names a specific condition, cites multiple data sources, and states its own limits, so a clinician can act on it instead of guessing.
- 0-8 minReview Wednesday evidence table; identify the three strongest data points supporting the top diagnosis.
- 8-20 minWrite the claim: one sentence naming the most likely diagnosis.
- 20-45 minWrite evidence section: cite history, vitals, lab, and genetic data with specific values.
- 45-62 minWrite reasoning: connect each evidence point to the diagnostic claim.
- 62-72 minAdd next-steps recommendation (confirmatory test or referral) and one limitation.
- 72-80 min: check that claim is specific, evidence is multi-source, limitation is stated.
- • Your team built the evidence table yesterday; today you write the individual CER that turns that evidence into a recommendation.
- • Each CER must have a specific diagnosis in the claim, not a general description.
- • Cite at least three data types from the workup: history, vitals, bloodwork, or genetics.
- • The next-steps recommendation is what separates a diagnosis from a plan of care.
- • A diagnostic CER claim must name a specific condition, not just a symptom cluster.
- • Multi-source evidence means citing at least history, one lab value, and one other data type.
- • Recommending confirmatory tests is how clinicians reduce uncertainty without guessing.
Unit 2.3 New to the Practice: New patient diagnostic workup: history, vitals, bloodwork, genetics, evidence synthesis. · Recommendation CER
Day 4 of this lesson. Open this exact section in myPLTW (find it in Clever, Microsoft sign-in), then do the work below.
Do this: Open myPLTW and locate any Lesson 2.3 New to the Practice recommendation or CER-writing activity to use as a writing guide.
Submit any platform prompts for this lesson before starting the independent CER.
Platform prompts should be done in the first 15 minutes; the CER is today's main product.
Completed CER turned in on the class site is the primary evidence.
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.
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 2.3 New to the Practice: New patient diagnostic workup: history, vitals, bloodwork, genetics, evidence synthesis. · Recommendation CER
Open myPLTW and locate any Lesson 2.3 New to the Practice recommendation or CER-writing activity to use as a writing guide.
Platform prompts should be done in the first 15 minutes; the CER is today's main product.
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 that recommends a diagnosis and next steps from synthesized evidence.
- State a claim naming the most likely diagnosis for the patient.
- Cite specific history, vital, lab, and genetic evidence that support the claim.
- Explain reasoning that connects each evidence point to the diagnosis.
- Recommend confirmatory tests or referrals to reduce remaining uncertainty.
- Name assumptions and limitations that could change the recommendation.
CER: CER with a specific diagnostic claim, multi-source evidence from the workup, reasoning linking each evidence point to the claim, a next-steps recommendation, and one stated limitation.
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.
| Task | Who |
|---|---|
| State a claim naming the most likely diagnosis for the patient. | _______ |
| Cite specific history, vital, lab, and genetic evidence that support the claim. | _______ |
| Explain reasoning that connects each evidence point to the diagnosis. | _______ |
| Recommend confirmatory tests or referrals to reduce remaining uncertainty. | _______ |
| Name assumptions and limitations that could change the recommendation. | _______ |
Working solo? Put your own name in "Who" for every row.
- Write a CER with a clear diagnostic claim and multi-source evidence.
- Recommend appropriate next steps and state at least one limitation.
- 1Do thisStudents write a CER that recommends a diagnosis and next steps from synthesized evidence.
- 2Use this resource
- 3Submit thisCER: CER with a specific diagnostic claim, multi-source evidence from the workup, reasoning linking each evidence point to the claim, a next-steps recommendation, and one stated limitation.
- 4Submit it here
- 1Open the drop folder.
- 2Sign in with your district Microsoft account, not a personal one.
- 3Upload the file, named Lastname_Firstname__Assignment Title.
- 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. Principles of Biomedical Technology (Principles of Biomedical Science) › Unit 2.3 New to the Practice: New patient diagnostic workup: history, vitals, bloodwork, genetics, evidence synthesis. › CEROpen the drop folder
Learn it · deck, reading, and vocabulary▸
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.
A team using a shared, ordered evidence table catches blind spots a lone reviewer misses, so combining people and data sources makes the diagnosis more accurate.
A recommendation earns trust because it names a specific condition, cites multiple data sources, and states its own limits, so a clinician can act on it instead of guessing.
A smoke alarm detects signs of fire but can also react to burnt toast.
- What does the alarm detect?
- What creates a false alarm?
- What evidence is needed before declaring a fire?
A screening signal changes what to investigate next; it does not automatically prove the cause.
Biomedical tests have measured performance and biological sampling limits that a household alarm does not capture.
- • Alarm signal maps to a test result.
- • Burnt toast maps to a .
- • Inspection maps to confirmation or the next test.
Driving question: For your patient, can you write a claim that names one specific condition, back it with history plus a lab value plus one more data type, and say out loud what could still prove you wrong?
What you already know: A team using a shared, ordered evidence table catches blind spots a lone reviewer misses, so combining people and data sources makes the diagnosis more accurate.
New idea: A recommendation earns trust because it names a specific condition, cites multiple data sources, and states its own limits, so a clinician can act on it instead of guessing.
Visual or model: F1. F1. A lesson illustration or teaching diagram for Recommendation CER. Use it with E1-E3; it is a model or context image, not experimental or patient data. What to notice: Trace the labeled observation or evidence sequence before choosing an explanation.
- Observe or measure the relevant feature in Recommendation CER.
- Organize the observation with a stable evidence ID.
- Apply this rule: A screening signal changes what to investigate next; it does not automatically prove the cause.
- Choose the option the evidence supports and state the limit of the conclusion.
Real biomedical example: For your patient, can you write a claim that names one specific condition, back it with history plus a lab value plus one more data type, and say out loud what could still prove you wrong?
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.
- • : The ranked list of conditions that could explain a patient's story. The whole game is narrowing it honestly.
- • : Combining findings from many separate sources into one organized conclusion, weighing how strong and consistent the evidence is overall.
- • : A procedure that analyzes a sample of blood, urine, or to provide measurable information that helps diagnose or monitor a condition.
- • : An organized record of a patient's medical history, test results, medications, and care, used by the healthcare team to make decisions.
- • recommendation: A clear, evidence-based suggestion for what action to take, drawn from analyzing data, results, or a patient's situation.
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.
A diagnostic CER claim must name a specific condition, not just a symptom cluster.
Limit: E1 supplies context or an observation; it does not by itself establish the explanation.
A recommendation earns trust because it names a specific condition, cites multiple data sources, and states its own limits, so a clinician can act on it instead of guessing.
Limit: E2 is a teaching statement or comparison and must be checked against the task evidence.
Write a CER with a clear diagnostic claim and multi-source evidence.
Limit: E3 supports only the result or product criterion named here; it cannot justify a broader clinical or causal claim.
PLTW-PBT-2026-11-05 · Simulated classroom evidence scenario
Your role: biomedical investigator
Decision: Your team must decide what the evidence from Recommendation CER supports before submitting the claim-evidence-reasoning response named on the lesson page.
- • Choose the strongest supported explanation.
- • Choose the next evidence to collect.
- • Hold the decision because the evidence is insufficient.
Response: State one choice, cite at least two evidence IDs, explain the rule that connects them, and add one limitation. Submit it as the claim-evidence-reasoning response.
Claim ceiling: The supplied lesson evidence can support an observation, pattern, classroom mechanism, or next-step decision about Recommendation CER. It cannot by itself prove causation, establish a real clinical diagnosis, or justify action outside this classroom task.
Reason for review: Your team must decide what the evidence from Recommendation CER supports before submitting the claim-evidence-reasoning response named on the lesson page.
Context: A diagnostic recommendation is only as strong as its evidence, because multi-source support and honestly stated limitations are what separate a defensible claim from a hunch.
- • T1: State a claim naming the most likely diagnosis for the patient.
- • T2: Cite specific history, vital, lab, and genetic evidence that support the claim.
- • T3: Explain reasoning that connects each evidence point to the diagnosis.
- • T4: Recommend confirmatory tests or referrals to reduce remaining uncertainty.
- • T5: Name assumptions and limitations that could change the recommendation.
- • E1: A diagnostic CER claim must name a specific condition, not just a symptom cluster.
- • E2: A recommendation earns trust because it names a specific condition, cites multiple data sources, and states its own limits, so a clinician can act on it instead of guessing.
- • E3: Write a CER with a clear diagnostic claim and multi-source evidence.
Measurements: No patient measurement is supplied unless it appears explicitly in E1-E3 or F1. Do not invent a value.
Figure finding: Teaching diagram for Recommendation CER. Trace the labeled observation or evidence sequence before choosing an explanation. 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.
- • The solution must address the stated need in Recommendation CER.
- • The decision must be supported by E1-E3.
- • The final product must make the success criteria visible.
- • 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.
- • 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.
- Version or option tested
- Criterion met or missed
- Evidence ID and result
- Revision made
- Reason for the revision
- Need and user
- Criteria and constraints
- Chosen option and evidence
- Test result
- Revision and reason
Students often think Students think a CER claim can name a symptom cluster like 'fatigue and high blood sugar' and count as a diagnosis.. The trap: That is a trap because a diagnosis must name a specific condition, not just describe the symptoms. Symptoms are the evidence pointing at the condition; if your claim only restates the symptoms, you have not actually diagnosed anything, and you cannot recommend a confirmatory test for a symptom list.
Claim: Patient B's most likely diagnosis is iron-deficiency anemia.\n\nEvidence: The history notes ongoing fatigue, feeling cold, and heavy menstrual periods; the complete blood count shows hemoglobin at 9.8 g/dL (below the 12.0 to 15.5 g/dL normal range for adult females) with small, pale red cells; and the physical exam finds pale inner eyelids and a resting heart rate of 98 beats per minute.\n\nReasoning: These sources converge on one story. The history points to steady blood loss and a body working harder to move oxygen, the low hemoglobin with small pale cells is the direct laboratory signature of too little iron to build normal red blood cells, and the pale eyelids plus faster heart rate are the body compensating for reduced oxygen-carrying capacity. Next steps: I recommend a serum ferritin test to confirm depleted iron stores, since ferritin measures the actual iron reserve rather than just the downstream red-cell count. Limitation: a low hemoglobin alone does not prove the cause, because other conditions such as chronic disease can also lower it, so the ferritin result is needed before the diagnosis is final.
This model shows the level of evidence and organization needed to complete: A claim-evidence-reasoning paragraph naming the most likely diagnosis, citing multi-source workup evidence, recommending confirmatory next steps, and stating one limitation.
- Write one defensible claim.
- Choose specific evidence that supports the claim.
- Explain the scientific rule that connects the evidence to the claim.
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: turns in the CER on the class site under the Recommendation CER assignment before the end of the period.
- 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.
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.
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 Recommendation CER. 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.
Saved on this device. Show Mr. Mendoza or add these to your notebook glossary to claim the extra credit.
Hand-picked readings and interactives for this lesson, from authoritative open organizations and PLTW's own public course outline.
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 Recommendation CER. It cannot by itself prove causation, establish a real clinical diagnosis, or justify action outside this classroom task.
A student's CER claim reads: 'The patient has high blood sugar and is tired.' Is that a valid diagnostic claim? Fix it if not.
Write an answer and pick a confidence to unlock the key.
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.
Go further and get help▸
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.
Today is individual work you can do from home: complete the same target above, then submit your CER.
Open the drop folderTurn 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.
Class still runs. Complete the online activity above (it's self-guided). Need the concept taught without a teacher? Use this authoritative explainer:
NIH MedlinePlus Lab TestsYou'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- 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, 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.