Chemo and radiation
Open your materials, follow the steps, then turn in your work.
Compare how chemotherapy and radiation kill cancer cells and why each causes side effects.
1. Open your materials
Use the materials named in the first step below. Open lesson resources.
2. Start the work
Read the treatment-mechanism notes in the PLTW course shell and define apoptosis.
Show all 5 required steps
- Read the treatment-mechanism notes in the PLTW course shell and define apoptosis.
- Diagram how chemotherapy targets fast-dividing cells throughout the body.
- Diagram how radiation damages cell DNA in a targeted area.
- List two common side effects for each and tie them to healthy fast-dividing tissue.
- Write a CER paragraph claiming which treatment fits a localized tumor and why.
Lost your place? Reopen today's Chemo and radiation record. Find the last completed evidence ID, check it against the claim ceiling, and continue with the first unfinished step rather than restarting the whole task.
Check your work before submitting
- You'll be able to contrast the mechanisms of chemotherapy and radiation.
- You'll be able to explain side effects using apoptosis and healthy-cell damage.
3. Turn in your work
DueCheck Schoology- Hand in
- CER paragraph arguing which treatment (chemo or radiation) is more appropriate for a localized tumor, with apoptosis and side-effect evidence.
How to submit and name your file
Use the submission route shown on today's today's page.
In Schoology, open your course and the assignment for this lesson. Attach your file, select Submit, and check that it appears in the submission.
PDF upload helpYou get two school days for every day you were absent, so this deadline moves with you.
Find this lesson's Schoology assignments
These are existing assignments for your section. Follow the directions in the assignment you are working on; this list does not add new work. Check Schoology for each deadline.
Link will not open? Open Schoology, choose your course and section, and find the title shown above.
How this lesson connects
Keep using what you learned last class: A defensible biomedical decision separates scientific evidence from value judgments, identifies who may benefit or be burdened, and states the uncertainty and tradeoffs that remain. Today: Cancer diagnosis and treatment planning integrate tissue or molecular findings, stage, tumor features, overall health, benefits, and harms; no single classroom image or marker determines the complete decision.
Optional: listen or watch a unit review▸
Need help? Warm-up, timing, and directions▸
💡 Big idea: diagnosis and treatment planning integrate or molecular findings, stage, features, overall health, benefits, and harms; no single classroom image or marker determines the complete decision.
- 0-8Read treatment notes; define in margin
- 8-25Draw mechanism diagram (systemic, fast-dividers)
- 25-40Draw radiation mechanism diagram (targeted, DNA damage)
- 40-55List two side effects each; link to healthy type
- 55-72Write CER paragraph: chemo vs. radiation for a localized
- 72-80 CER structure; submit
- • Both and radiation kill , but they do it differently and hurt different bystanders.
- • Today you will diagram each mechanism and then argue which one fits a specific case.
- • The CER format you practice today is one of the highest-frequency skills on the WebXam.
- • By the end you will be able to explain to a patient why their hair may fall out.
- • circulates systemically and targets any rapidly dividing cell.
- • Radiation delivers focused ionizing energy to damage DNA in a defined volume.
- • Side effects correlate directly to which fast-dividing healthy tissues are caught in the treatment field.
PLTW connection and today's work
Open Project 3.3.1 Diary of a Cancer Patient in myPLTW for Lesson 3.3 Treating Cancer and use the treatment-mechanism notes to diagram chemotherapy and radiation.
Today's stopping point: Biopsy and staging should be done (Tuesday); chemo/radiation diagrams and CER due today.
PLTW activity titles identify the course connection. If your account will not open, use the posted materials for today and tell Mr. Mendoza. Do not mark an online activity complete unless you completed it.
Course connection
- Project 3.3.1 Diary of a Cancer Patient
Use the turn-in directions at the top of this page. Do not create a second submission unless your teacher asks for one.
Show another explanation or a smaller first step
Need help? Choose a starting point
Lesson resources: reading, slides, 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 defensible biomedical decision separates scientific evidence from value judgments, identifies who may benefit or be burdened, and states the uncertainty and tradeoffs that remain.
diagnosis and treatment planning integrate or molecular findings, stage, features, overall health, benefits, and harms; no single classroom image or marker determines the complete decision.
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: A patient with a single confined to one spot in the neck is offered either or radiation. Which one fits a localized tumor better, and why does the choice change which side effects they get?
What you already know: A defensible biomedical decision separates scientific evidence from value judgments, identifies who may benefit or be burdened, and states the uncertainty and tradeoffs that remain.
New idea: diagnosis and treatment planning integrate or molecular findings, stage, features, overall health, benefits, and harms; no single classroom image or marker determines the complete decision.
Visual or model: F1. F1. A lesson illustration or teaching diagram for Chemo and radiation. Use it with E1-E3; it is a model or context image, not experimental or patient data. What to notice: Trace the labeled testing, treatment, or biological process and identify where evidence limits the decision.
- Observe or measure the relevant feature in today's lesson.
- 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: Today the medical interventions team uses Chemo and radiation to make a bounded evidence decision. The composite classroom case cannot support a real diagnosis, stage, prognosis, or treatment recommendation.
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.
- • : A medical procedure that removes a small sample of from the body so it can be examined under a microscope for disease such as .
- • staging: Classifying how far a has grown and spread, which guides treatment choices and predicts likely outcomes.
- • : Treatment that uses powerful drugs to kill rapidly dividing cells throughout the body, though it can also harm some fast-growing healthy cells.
- • radiation: Energy that travels as waves or particles; in medicine it can image inside the body or destroy harmful cells like .
- • : A treatment that attacks specific molecules cancer cells rely on, harming those cells while sparing more healthy cells than older .
- • : Programmed, controlled cell death that the body uses on purpose, including to clear the seam between two tissues during .
- • : An unintended effect of a medicine or treatment that happens in addition to its intended benefit, ranging from mild to serious.
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.
National Institute is the source this lesson's claim is checked against: How Cancer Is Diagnosed
Limit: The composite classroom case cannot support a real diagnosis, stage, prognosis, or treatment recommendation.
A screening signal changes what to investigate next; it does not automatically prove the cause.
Limit: Biomedical tests have measured performance and biological sampling limits that a household alarm does not capture.
You can contrast the mechanisms of and radiation.
Limit: E3 defines the classroom product or success criterion. It is not independent scientific evidence and cannot justify a clinical or causal claim.
PLTW-GEND-2026-11-20 · Simulated classroom evidence scenario
Your role: medical interventions team member
Decision: Your team must decide what the evidence from today's lesson supports before submitting the claim-evidence-reasoning response named on today's page.
- • Explain that attacks specific molecules, so the marker result tells you who qualifies for that drug.
- • Recommend once your write-up explains how the drug works, since a thorough answer reads as a supported one.
- • Keep the recommendation inside the classroom case, because it lacks the stage, features, and health data real planning needs.
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: Today's evidence supports a classroom claim about today's lesson. It cannot prove causation, diagnose a real patient, or justify action outside this room.
Reason for review: Your team must decide what the evidence from today's lesson supports before submitting the claim-evidence-reasoning response named on today's page.
Context: Today the medical interventions team uses Chemo and radiation to make a bounded evidence decision. The composite classroom case cannot support a real diagnosis, stage, prognosis, or treatment recommendation.
- • T1: Read the treatment-mechanism notes in the PLTW course shell and define .
- • T2: Diagram how targets fast-dividing cells throughout the body.
- • T3: Diagram how radiation damages cell DNA in a targeted area.
- • T4: List two common side effects for each and tie them to healthy fast-dividing .
- • T5: Write a CER paragraph claiming which treatment fits a localized and why.
- • E1: National Institute is the source this lesson's claim is checked against: How Cancer Is Diagnosed
- • E2: A screening signal changes what to investigate next; it does not automatically prove the cause.
- • E3: You can contrast the mechanisms of and radiation.
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 Chemo and radiation. Trace the labeled testing, treatment, or biological process and identify where evidence limits the decision. 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.
Rate or percent = part / comparison total x 100%. Percent change = (new - comparison) / comparison x 100%.
If 18 of 60 records meet a condition, the frequency is 18 / 60 x 100% = 30%.
Name the comparison total. A percent describes the supplied group and does not automatically predict an individual's outcome.
Use today's supplied counts to calculate one rate, risk, frequency, or percent change. Show the denominator and interpretation.
Students often think A polished answer about Chemo and radiation is trustworthy even when its evidence source, comparison, or limitation is missing.. The trap: Presentation quality cannot raise the evidence level. The composite classroom case cannot support a real diagnosis, stage, prognosis, or treatment recommendation.
Claim: For a leukemia that has already spread throughout the bloodstream, a targeted therapy that flags one specific molecule on the cancer cells is usually a better fit than broad chemotherapy.\nEvidence 1: A targeted therapy is built to recognize a protein that appears mainly on the cancer cells, so it binds those cells and triggers apoptosis (programmed cell death) while mostly leaving normal cells alone, which concentrates the killing on the diseased cells even though they are scattered everywhere.\nEvidence 2: Broad chemotherapy travels through the whole body and kills any fast-dividing cell, so it does reach cancer cells no matter where they are, but it also damages healthy fast-dividing tissue and causes side effects like hair loss, mouth sores, nausea, and low blood counts, because hair follicles, the gut lining, and bone marrow all divide quickly.\nReasoning: When the cancer is spread out in the blood, the treatment has to reach the whole body, so a local option would miss most of the disease. Both a targeted therapy and broad chemotherapy can reach cells everywhere, but the targeted drug aims at a marker that is far more common on the cancer cells, so it spares more healthy tissue and tends to cause milder side effects than chemotherapy, which hits every fast-dividing cell it passes. Because the reach of each treatment has to match how spread out the disease is, and because that reach is what decides which healthy tissues get harmed, the targeted therapy fits this widespread situation better.
| Feature | Chemotherapy | Radiation |
|---|---|---|
| Reach | Systemic, whole body | Targeted area |
| How it kills | Hits any fast-dividing cell | Damages DNA in target volume |
| Common side effects | Hair loss, low blood counts | Skin irritation, local fatigue |
| Why side effects happen | Healthy fast-dividing tissue hit | Healthy cells in the beam path |
This model shows the level of evidence and organization needed to complete: Models the CER format for a treatment-mechanism argument on a parallel scenario: whether a targeted therapy or broad chemotherapy better fits a cancer that has spread throughout the bloodstream, using cell-killing mechanism and side-effect evidence. It does not argue the localized-tumor chemo-versus-radiation prompt students must complete.
- 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 your CER paragraph to Schoology by end of block.
- 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 Chemo and radiation. 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.
Open this when the class reaches this activity and use it to complete the required lesson artifact.
Placement rationale
Matched treatment and therapeutic choices by path:Medical-Interventions/Unit-3_How-to-Conquer-Cancer/3.3_Treating-Cancer; keywords:, radiation, cancer. Score 146. 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 treatment and therapeutic choices by path:Medical-Interventions/Unit-3_How-to-Conquer-Cancer/3.4_Building-a-Better-Cancer-Treatment; keywords:treatment, cancer. Score 142. Visibility: student-schoology (student-facing resource; link through Schoology rather than local path).
Sign in to Clever with your district Microsoft account to open Schoology or myPLTW. Follow today's posted steps. If myPLTW will not open, use the posted alternative and tell Mr. Mendoza. Turn in your completed work through the Schoology assignment.
Practice: try a question, then check your answer▸
Claim ceiling for this check: Today's evidence supports a classroom claim about today's lesson. It cannot prove causation, diagnose a real patient, or justify action outside this room.
A student makes a certain conclusion about Chemo and radiation from one classroom result. What must the student add before the conclusion is defensible?
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.
Missed class or ready for more?▸
Run this before you touch the bench. It is built from the real lab procedure, so the decisions you make here are the ones you will make with the equipment in your hands. This lesson has more than one, and they cover different skills.
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.
Go to Schoology to turn this in. Submit one PDF. Put your first and last name in the document header. Name the file: FirstName LastName - Assignment Title - YYYY-MM-DD.pdf. If you cannot get in, see Mr. Mendoza. Do not skip the work.
Class still runs. Complete the online activity above (it's self-guided). Need the concept taught without a teacher? Use this authoritative explainer:
National Cancer Institute: Types of cancer treatmentYou'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.
- SubmittedGo to Schoology to turn this in. Submit one PDF. Put your first and last name in the document header. Name the file: FirstName LastName - Assignment Title - YYYY-MM-DD.pdf. If you cannot get in, see Mr. Mendoza. Do not skip the work.
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