CER mini-report
Do now
Write a CER conclusion that states limitations of your physiology analysis.
- Hand in
- Problem 2 CER analysis mini-report: specific claim, statistical evidence with values, reasoning, and at least two honest limitations.
- 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.
Your statistics are done. Now, what exactly can you claim about your , what evidence backs it, and what two honest limitations should a reader know before they trust it?
Write a CER conclusion that states limitations of your physiology analysis.
- • Your mini-report contains a complete CER conclusion.
- • You name at least two honest limitations.
- In one sentence, what is your answer (claim) to the your data was meant to test?
- Name one thing about how your class collected data that could make a reader doubt the result, even if your math is perfect.
- 1State a claim answering your .
- 2Cite your statistical evidence to support the claim.
- 3Explain your reasoning linking evidence to claim.
- 4List at least two limitations of your study.
- 5Submit the Problem 2 analysis mini-report.
What did this day actually feel like?
CER mini-report
Claim, evidence, reasoning, limitations. My claim had to be that we found no significant difference, which is a real finding and does not feel like one.
Turned in: CER → Claim Evidence Reasoning 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 same day, drawn.
Claim, evidence, reasoning, limitations. My claim had to be that we found no significant difference, which is a real finding and does not feel like one.
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
🔑 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 CER conclusion links a claim to your own statistical evidence with explicit reasoning, and naming honest limitations bounds that claim rather than breaking it, so admitting what could have gone wrong is what makes the finding trustworthy.
- 0-10Review the CER mini-report format: claim, evidence, reasoning, and limitations
- 10-25Write the claim: answer your directly and specifically
- 25-45Cite statistical evidence: include specific values (mean, SD, t-test result) that support the claim
- 45-60Write the reasoning: explain how the statistics connect to the claim
- 60-75List at least two honest limitations and explain why each matters
- 75-80Submit the Problem 2 analysis mini-report; confirm it is in before Fall Break
- • You have run your analysis. Now you need to say what it means.
- • A CER mini-report is the vehicle: claim from your , evidence from your statistics, and reasoning that connects them.
- • Naming limitations is not a sign of weakness -- every published study includes them because they show you understand the boundaries of your evidence.
- • CER writing fluency is tested across all four WebXam 072125 strands.
- • How to write a CER conclusion that states a claim, cites statistical evidence, and connects them with explicit reasoning.
- • How to identify and name at least two limitations of a physiology study without undermining the conclusion.
- • Why honest limitations strengthen rather than weaken a scientific report.
Bias, error, graph choice, CER conclusion, limitations. · CER mini-report
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 Problem 2 in your myPLTW course shell and locate the CER or analysis-report activity to review the expected format and evidence standards.
Mark the CER mini-report activity complete in your tracker after submitting, because it is due before Fall Break.
The statistics analysis is done; today you write the CER conclusion with two honest limitations and submit the mini-report before Fall Break.
CER mini-report with specific claim, statistical evidence with values, reasoning, and at least two named limitations turned in on the class site or in person.
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.
Bias, error, graph choice, CER conclusion, limitations. · CER mini-report
Open Problem 2 in your myPLTW course shell and locate the CER or analysis-report activity to review the expected format and evidence standards.
The statistics analysis is done; today you write the CER conclusion with two honest limitations and submit the mini-report before Fall Break.
This is how Mr. Mendoza sees the class keeping pace with PLTW. Be honest, it only helps if it is accurate.
🎯 Write a CER conclusion that states limitations of your physiology analysis.
- State a claim answering your .
- Cite your statistical evidence to support the claim.
- Explain your reasoning linking evidence to claim.
- List at least two limitations of your study.
- Submit the Problem 2 analysis mini-report.
CER: Problem 2 CER analysis mini-report: specific claim, statistical evidence with values, reasoning, and at least two honest limitations.
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 answering your . | _______ |
| Cite your statistical evidence to support the claim. | _______ |
| Explain your reasoning linking evidence to claim. | _______ |
| List at least two limitations of your study. | _______ |
| Submit the Problem 2 analysis mini-report. | _______ |
Working solo? Put your own name in "Who" for every row.
- Your mini-report contains a complete CER conclusion.
- You name at least two honest limitations.
- 1Do thisWrite a CER conclusion that states limitations of your physiology analysis.
- 2Use this resource
- 3Submit thisCER: Problem 2 CER analysis mini-report: specific claim, statistical evidence with values, reasoning, and at least two honest limitations.
- 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. Biotechnology for Health (Biomedical Innovations) › Bias, error, graph choice, CER conclusion, limitations. › 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 difference between averages could come from chance when the data are spread out, so you run a t-test and record every step, because that is what lets you (and anyone else) trust the result is real and repeatable.
A CER conclusion links a claim to your own statistical evidence with explicit reasoning, and naming honest limitations bounds that claim rather than breaking it, so admitting what could have gone wrong is what makes the finding trustworthy.
A detective board holds observations, possible explanations, and one next question.
- Which notes are direct observations?
- Which notes are explanations?
- What new evidence would separate the explanations?
Keep observations separate from explanations, then collect the evidence that can distinguish the options.
Biomedical investigations use controlled procedures and validated measurements, not intuition alone.
- • Board notes map to E1-E3.
- • Possible explanations map to the decision options.
- • The next question maps to the evidence-based action.
Driving question: Your statistics are done. Now, what exactly can you claim about your , what evidence backs it, and what two honest limitations should a reader know before they trust it?
What you already know: A difference between averages could come from chance when the data are spread out, so you run a t-test and record every step, because that is what lets you (and anyone else) trust the result is real and repeatable.
New idea: A CER conclusion links a claim to your own statistical evidence with explicit reasoning, and naming honest limitations bounds that claim rather than breaking it, so admitting what could have gone wrong is what makes the finding trustworthy.
Visual or model: F1. F1. A lesson illustration or teaching diagram for CER mini-report. Use it with E1-E3; it is a model or context image, not experimental or patient data. What to notice: Trace the labeled system, test, or design relationship and identify which evidence should trigger revision.
- Observe or measure the relevant feature in CER mini-report.
- Organize the observation with a stable evidence ID.
- Apply this rule: Keep observations separate from explanations, then collect the evidence that can distinguish the options.
- Choose the option the evidence supports and state the limit of the conclusion.
Real biomedical example: Your statistics are done. Now, what exactly can you claim about your , what evidence backs it, and what two honest limitations should a reader know before they trust it?
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.
- • bias: A systematic error in how data is collected or interpreted that tilts results in one direction, making conclusions less accurate or unfair.
- • limitation: A weakness or boundary of a study, design, or method that restricts how far its results can be trusted or applied.
- • replication: Repeating a study to see if the result holds; a key test of whether a finding is real.
- • : A result unlikely to be due to chance, often shown by a p-value below a set threshold such as 0.05.
- • evidence: The facts, data, and cases that carry your claim. Opinions are free; evidence costs homework.
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.
How to write a CER conclusion that states a claim, cites statistical evidence, and connects them with explicit reasoning.
Limit: E1 supplies context or an observation; it does not by itself establish the explanation.
A CER conclusion links a claim to your own statistical evidence with explicit reasoning, and naming honest limitations bounds that claim rather than breaking it, so admitting what could have gone wrong is what makes the finding trustworthy.
Limit: E2 is a teaching statement or comparison and must be checked against the task evidence.
Your mini-report contains a complete CER conclusion.
Limit: E3 supports only the result or product criterion named here; it cannot justify a broader clinical or causal claim.
PLTW-BFH-2027-03-16 · Simulated classroom evidence scenario
Your role: biomedical design team member
Decision: Your team must decide what the evidence from CER mini-report supports before submitting the claim-evidence-reasoning 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 claim-evidence-reasoning response.
Claim ceiling: The supplied lesson evidence can support an observation, pattern, classroom mechanism, or next-step decision about CER mini-report. It cannot by itself prove causation, establish a real clinical diagnosis, or justify action outside this classroom task.
Mean = sum of values / number of values. Median = middle ordered value. Range = maximum - minimum.
For 2, 4, 4, and 10: mean = 20 / 4 = 5, median = 4, and range = 10 - 2 = 8.
Mean, median, and range keep the measurement unit. Order the values before finding the median.
Calculate the requested summary for today's supplied values, then write what it reveals and what it hides.
Students often think Students think a conclusion should summarize what they did step by step, and that admitting limitations makes their work look weak or wrong.. The trap: A conclusion is not a recap of your procedure, and limitations are not admissions of failure. A claim must be answered with evidence and reasoning, and naming honest limits (small sample, uncontrolled variables) shows you understand the boundaries of your result, which is exactly what makes readers trust the part you do claim.
Research question for this parallel case: Does a slow paced-breathing exercise lower a person's resting breathing rate compared to normal quiet sitting?\n\nClaim: A slow paced-breathing exercise significantly lowers resting breathing rate compared to normal quiet sitting.\n\nEvidence: My quiet-sitting mean was 15.4 breaths per minute (SD 1.1) and my paced-breathing mean was 9.8 breaths per minute (SD 1.3), a difference of about 5.6 breaths per minute. A two-sample t-test gave p of about 0.0003, below 0.05.\n\nReasoning: Because the p-value is below 0.05, the 5.6 breath-per-minute drop is too large to be explained by normal measurement variation alone, so the paced-breathing exercise is the most likely cause of the lower breathing rate. The small standard deviations show my readings within each condition were consistent, which strengthens the comparison.\n\nLimitations:\n1. I tested only one subject, so I cannot generalize to all people; lung capacity and baseline breathing habits vary from person to person.\n2. I controlled the sitting position but not factors like recent physical activity or anxiety before the session, which could raise the baseline breathing rate and exaggerate the difference.\n\nThese limitations do not erase the result; they tell a reader exactly how far the conclusion can be trusted.
This model shows the level of evidence and organization needed to complete: Worked CER on a parallel case: models the Problem 2 mini-report format (claim answering a research question, statistical evidence with values, reasoning, and at least two honest limitations) using a different physiology comparison so it guides format and depth without answering today's heart-rate prompt.
- 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: Submit the Problem 2 analysis mini-report on the class site, or hand it to Mr. Mendoza in class before the end of Thursday class. This is due before Fall Break.
- 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 CER mini-report. 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.
Classroom documents for this lesson are posted in Schoology. Open Clever, then Schoology, and find each one by the name shown on its card.
Use this if you were absent, got stuck, or need another pass before you submit the lesson artifact.
Placement rationale
Matched Statistical analysis and t-test reasoning by path:Biomedical-Innovations/Problem-2_Human-Physiology/2.1_Human-Physiology; keywords:statistical analysis. Score 138. Visibility: student-schoology (student-facing resource; link through Schoology rather than local path).
Use this if you were absent, got stuck, or need another pass before you submit the lesson artifact.
Placement rationale
Matched Statistical analysis and t-test reasoning by path:Biomedical-Innovations/Problem-2_Human-Physiology/2.1_Human-Physiology; keywords:statistical analysis. Score 134. Visibility: student-schoology (student-facing resource; link through Schoology rather than local path).
Open this when the class reaches this activity and use it to complete the required lesson artifact.
Placement rationale
Matched Statistical analysis and t-test reasoning by path:Biomedical-Innovations/Problem-2_Human-Physiology/2.1_Human-Physiology. Score 126. Visibility: student-schoology (student-facing resource; link through Schoology rather than local path).
How to get there: open Clever and sign in with your Microsoft (district) account. Both myPLTW and Schoology are in Clever. Do the activity in myPLTW. Turn the work in on this site or hand it to Mr. Mendoza, because that is the step that counts as submitted. Schoology only shows your report-card grade later.
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 CER mini-report. It cannot by itself prove causation, establish a real clinical diagnosis, or justify action outside this classroom task.
A peer writes: 'Our sample was only 12 people, so our whole conclusion is probably wrong and we should not claim anything.' Is that the right way to handle the limitation? What should they do instead?
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:
Khan Academy Statistics and Probability- 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.