Physiology variables
Launch Problem 2 by identifying variables for a human physiology research design.
Problem 2 launch: chosen physiological measure, identified independent/dependent/controlled variables, and a testable hypothesis.
- 1Do thisLaunch Problem 2 by identifying variables for a human physiology research design.
- 2Use this resource
- 3Submit thisExit ticket: Problem 2 launch: chosen physiological measure, identified independent/dependent/controlled variables, and a testable hypothesis.
- 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: Biotechnology for Health (Biomedical Innovations) › Evidence-based revision, Q&A, intro to physiology research design. › Exit ticketOpen Schoology
Argument: disagreeing well, and when opinion becomes fact
How do we argue productively when we disagree, and when does a claim become accepted as fact?
An argument is not a fight. It is two or more people testing claims against evidence to get closer to the truth. The best disagreements aim at the strongest version of the other side (steelman it), refute the actual reasoning, and stay about the idea, not the person.
A sound argument and a clash of opinions are different things. Opinions can simply differ and both stand. A scientific argument is settled by evidence: the side with stronger, more reliable evidence and better reasoning should win, and everyone should be willing to update.
So when does an opinion become a fact? In science, a claim becomes accepted not because enough people like it, but when independent evidence keeps supporting it and repeated attempts to disprove it fail. That is consensus, and it is provisional: it holds until better evidence changes it. Truth is not a vote, but agreement among many careful, independent investigations is the best signal we have.
- • Steelmans: it takes on the strongest version of the other side.
- • Targets reasoning and evidence, never the person.
- • Is settled by evidence, not by who is louder or more popular.
- • Stays open: the participants will change their minds if the evidence does.
- • A claim earns the label “fact” through repeated, independent evidence, not a popularity vote.
- • Even strong consensus stays open to revision if better evidence appears.
Take a claim from this course that people might dispute. Write the strongest argument for it and the strongest against it, then say which the evidence supports and what would change your mind.
- 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 testable hypothesis and correctly identified variables are the non-negotiable foundation of any physiological investigation.
- 0-10Introduce Problem 2: physiology investigation overview and evidence expectations
- 10-25Read the Problem 2 physiology overview and discuss physiological measures worth studying
- 25-40Choose a measure and identify independent, dependent, and controlled variables
- 40-60Write a testable hypothesis linking the independent variable to the dependent measure
- 60-75Submit your variables and hypothesis
- 75-80Pair-check: does your partner's hypothesis have all three variable types? Give one piece of feedback.
- • Problem 1 is complete. Problem 2 asks you to investigate human physiology using real data.
- • Today you launch Problem 2 by choosing a physiological measure and designing a testable hypothesis around it.
- • Getting the variables right now prevents weeks of wasted data collection later.
- • Molecular and Genetic Technology and Microbiology Testing on WebXam 072125 both require experimental design fluency.
- 1Read the Problem 2 physiology overview.
- 2Choose a physiological measure to investigate, such as heart rate.
- 3Identify the independent, dependent, and controlled variables.
- 4Write a testable hypothesis about your measure.
- 5Submit your variables and hypothesis.
- • You can name independent, dependent, and controlled variables.
- • You can write a testable physiology hypothesis.
- • The definitions of independent, dependent, and controlled variables and how to apply them to a physiology investigation.
- • What makes a hypothesis testable rather than merely a guess.
- • Why choosing a measurable physiological variable -- such as heart rate -- is the first constraint that shapes the entire study design.
Your PLTW work today
Evidence-based revision, Q&A, intro to physiology research design. · Physiology variables
Day 4 of this lesson. Open this exact section in myPLTW (reached through Schoology), then do the work below.
Do this: Open Problem 2 Exploring Human Physiology in your myPLTW course shell and locate the variable-identification and hypothesis activity.
Mark the variable and hypothesis activity complete in your tracker after submitting your work.
Problem 1 is fully closed out; today you launch Problem 2 by identifying variables and writing your first physiology hypothesis.
Written variable identification (independent, dependent, controlled) and a testable physiology hypothesis submitted to Schoology.
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.
Evidence-based revision, Q&A, intro to physiology research design. · Physiology variables
Open Problem 2 Exploring Human Physiology in your myPLTW course shell and locate the variable-identification and hypothesis activity.
Problem 1 is fully closed out; today you launch Problem 2 by identifying variables and writing your first physiology hypothesis.
This is how Mr. Mendoza sees the class keeping pace with PLTW. Be honest, it only helps if it is accurate.
🎯 Launch Problem 2 by identifying variables for a human physiology research design.
- Read the Problem 2 physiology overview.
- Choose a physiological measure to investigate, such as heart rate.
- Identify the independent, dependent, and controlled variables.
- Write a testable hypothesis about your measure.
- Submit your variables and hypothesis.
Exit ticket: Problem 2 launch: chosen physiological measure, identified independent/dependent/controlled variables, and a testable hypothesis.
Submit on SchoologyUpload by 11:29 PM for full credit.
| Task | Who |
|---|---|
| Read the Problem 2 physiology overview. | _______ |
| Choose a physiological measure to investigate, such as heart rate. | _______ |
| Identify the independent, dependent, and controlled variables. | _______ |
| Write a testable hypothesis about your measure. | _______ |
| Submit your variables and hypothesis. | _______ |
Working solo? Put your own name in "Who" for every row.
- You can name independent, dependent, and controlled variables.
- You can write a testable physiology hypothesis.
Teacher-posted resources
Classroom documents for this lesson. Ones marked “Open the file” open right here; the rest are posted in Schoology. Use the label on each card to choose the right move.
Use this if you were absent, got stuck, or need another pass before you submit the lesson artifact.
Placement rationale
Matched ER presentation and physiology bridge by path:Biomedical-Innovations/Problem-1_Emergency-Room/1.1_Emergency-Room; keywords:emergency room, clinical. Score 142. 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 ER presentation and physiology bridge by path:Biomedical-Innovations/Problem-2_Human-Physiology/2.1_Human-Physiology; keywords:physiology. 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 ER presentation and physiology bridge by path:Biomedical-Innovations/Problem-2_Human-Physiology/2.1_Human-Physiology; keywords:physiology. Score 134. Visibility: student-schoology (student-facing resource; link through Schoology rather than local path).
How to get there: open the CMSD website, click Clever, sign in with your Microsoft (district) account, then open Schoology from Clever.
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 Exit ticket.
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:
Khan Academy Scientific Method- 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 Mon, Feb 22, 2027 · Physiology variables here. Use a clear file name (your initials + project). Routine work still goes to Schoology (via the CMSD portal).
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