Wed, Oct 28, 2026Fall (Semester 1) · Week 10Day 46 of 7080-min block

Animal research ethics debate

Today's target

Students will debate the ethics of using model organisms like C. elegans in human-health research.

Due today · Exit ticket Required

Written personal stance on using C. elegans in research, citing one justification and acknowledging one genuine ethical concern.

Your 4 steps today
  1. 1
    Do this
    Students will debate the ethics of using model organisms like C. elegans in human-health research.
  2. 2
  3. 3
    Submit this
    Exit ticket: Written personal stance on using C. elegans in research, citing one justification and acknowledging one genuine ethical concern.
  4. 4
    Submit it here
    1. 1CMSD website. Go to clevelandmetroschools.org and click the Clever button.
    2. 2Clever. Clever opens. Sign in if it asks.
    3. 3Microsoft (district) login. Use your district Microsoft account (the one for school).
    4. 4Schoology. Open Schoology, then your class, then Assignments, and find the file named below.
    The file to submit is named: Human Anatomy & Physiology (Human Body Systems) › Unit 2.2 Research Model: Model organisms, C. elegans, neurotransmitters/hormones, scientific literature, research poster. › Exit ticket
    Open Schoology
Were you absent? Jump to the make-up plan
Where this fits
Tested on (Ohio WebXam)
Human Anatomy and Physiology · 072040
PLTW lesson
HBS · Animal research ethics debate
WebXam domain
Human Body Form, Function, and Pathophysiology
Evidence to produce
Exit ticket
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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.

Quick glossary
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.
Learn first

Minute-by-minute · 80-minute block

💡 Big idea: Scientific research depends on model organisms, but their use raises ethical questions about animal welfare and research validity.

  1. 0-8Read the model-organism prompt; assign stakeholder roles to groups
  2. 8-22Group prep: list 2 justifications and 2 concerns from your stakeholder view
  3. 22-40Debate round 1: each group states its strongest justification
  4. 40-55Rebuttal round: each group responds to one opposing claim
  5. 55-70Individual writing: personal stance with one supporting reason
  6. 70-80Pair-share stances and submit exit ticket
Mr. Mendoza's 5-minute intro
  • A tiny transparent worm has helped scientists win multiple Nobel Prizes in medicine.
  • Today you will decide whether using that worm, and others like it, is ethically justified.
  • Bioethics debate sharpens your ability to evaluate evidence and communicate reasoning clearly.
  • You will leave with a written, reasoned stance you can defend.
Do this, step by step
  1. 1Read a short prompt on why scientists use model organisms.
  2. 2Form groups representing researchers, ethicists, and patient advocates.
  3. 3List two justifications and two concerns about animal models.
  4. 4Exchange one rebuttal with an opposing group.
  5. 5Write your personal stance with one supporting reason.
You'll be able to
  • Each student articulates a stance backed by a reason.
  • Groups surface at least one real ethical tradeoff.
Know by the end
  • Model organisms like C. elegans are used because they share conserved biological pathways with humans.
  • Research ethics weighs scientific benefit against potential harm to living subjects.
  • Understanding why we use model organisms connects to Microbiology and Evaluate Body Systems WebXam domains.
Do the work

Your PLTW work today

Open this PLTW section today

Unit 2.2 Research Model: Model organisms, C. elegans, neurotransmitters/hormones, scientific literature, research poster. · Animal research ethics debate

Day 1 of this lesson. Open this exact section in myPLTW (reached through Schoology), then do the work below.

Do this: Open Lesson 2.2 Everything Endocrine or Lesson 2.3 Challenge Accepted in myPLTW and complete any activity or reflection prompt assigned for today's model-organism ethics debate.

Complete

Mark the activity complete in myPLTW after submitting your exit ticket on C. elegans research ethics.

How far to get

You finished the endocrine week; today begins the research-design phase bridging Lessons 2.2 and 2.3, and the task should be checked off.

Upload as evidence

Note or screenshot of completion status for your tracker.

All PLTW activities are completed inside the PLTW course environment — this page only gives direction. Submit producibles on Schoology.

The plan

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 2.2 Research Model: Model organisms, C. elegans, neurotransmitters/hormones, scientific literature, research poster.Day 1 of this projectSee the full week plan
Today's PLTW target

Unit 2.2 Research Model: Model organisms, C. elegans, neurotransmitters/hormones, scientific literature, research poster. · Animal research ethics debate

Open Lesson 2.2 Everything Endocrine or Lesson 2.3 Challenge Accepted in myPLTW and complete any activity or reflection prompt assigned for today's model-organism ethics debate.

You finished the endocrine week; today begins the research-design phase bridging Lessons 2.2 and 2.3, and the task should be checked off.

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 the ethics of using model organisms like C. elegans in human-health research.

  • Read a short prompt on why scientists use model organisms.
  • Form groups representing researchers, ethicists, and patient advocates.
  • List two justifications and two concerns about animal models.
  • Exchange one rebuttal with an opposing group.
  • Write your personal stance with one supporting reason.
2 · Turn in today

Exit ticket: Written personal stance on using C. elegans in research, citing one justification and acknowledging one genuine ethical concern.

Submit on Schoology

Upload by 11:29 PM for full credit.

3 · Who's doing what (team)
TaskWho
Read a short prompt on why scientists use model organisms._______
Form groups representing researchers, ethicists, and patient advocates._______
List two justifications and two concerns about animal models._______
Exchange one rebuttal with an opposing group._______
Write your personal stance 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 articulates a stance backed by a reason.
  • Groups surface at least one real ethical tradeoff.
6 · Reflection & next steps
Where are you today?0/7 checked
Pick your period and code first.
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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.

Words

This unit's vocabulary

model organismC. elegansassayliteraturevariablecontrolsample size

Tap the speaker to hear a term. Weekly vocabulary task: add two of these terms to your notebook glossary with a definition and an example in your own words.

Check yourself

WebXam practice

Tap an answer to check it · nothing is recorded or graded
Why is the roundworm C. elegans frequently used as a model organism in biological research?
In a controlled experiment, the independent variable is the factor that the researcher:
A control group in an experiment is included in order to:
Increasing the sample size in a study generally:
Check yourself

Cumulative WebXam review

A quick mixed-review pulling questions from earlier units plus today, so the WebXam material stays fresh.

Tap an answer to check it · nothing is recorded or graded
[Review: Getting Nervous: the brain, neurons, and how signals travel] Which brain region is primarily responsible for coordinating balance and fine motor movements?
[Review: Reflexes: reaction time, signaling, and a patient diagnosis challenge] Why might a depressant drug increase a person's reaction time in a reflex test?
[Review: Everything Endocrine: hormones, feedback loops, and the blood-sugar model] Which gland releases glucagon when blood sugar falls too low?
Why is the roundworm C. elegans frequently used as a model organism in biological research?
Explore

Where this leads — careers

Safety net

What to do if you were absent

Today was a debate — do this instead

Debate whether the simplicity of C. elegans justifies its use over more complex animals; log two points per side.

Then submit your Exit ticket on Schoology.

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:

Khan Academy: The science of biology (experimental design)
Explore

Optional 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
How this is graded
For: Exit ticket — Written personal stance on using C. elegans in research, citing one justification and acknowledging one genuine ethical concern.
  • 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 (Schoology for routine work) and confirmed.
Submission Zone

Drop your Wed, Oct 28, 2026 · Animal research ethics debate here. Use a clear file name (your initials + project). Routine work still goes to Schoology (via the CMSD portal).

Upload a project