Intervention plan

Open your materials, follow the steps, then turn in your work.

Finalize and submit a public health intervention plan grounded in your outbreak data.

Before lab work: Read the safety rules below and wait for your teacher’s approval. You may read the directions while you wait.

1. Open your materials

Use the materials named in the first step below. Open lesson resources.

2. Start the work

Combine your line list, calculations, and intervention model.

Show all 5 required steps
  1. Combine your line list, calculations, and intervention model.
  2. State the recommended intervention and the data that supports it.
  3. Define one success metric to track after rollout.
  4. Add citations for your data and methods.
  5. Submit the plan and confirm it in your tracker.

Lost your place? Lost your place? You are finalizing your intervention plan. Combine your line list, calculations, and model into one document (step 1), state the intervention and its supporting data (step 2), define one success metric (step 3), add citations (step 4), then submit and confirm in your tracker (step 5).

Check your work before submitting

  • Your plan ties an intervention to outbreak evidence.
  • It includes a success metric and is submitted.

Before lab work: read the safety rules

  • Wear the required PPE, keep the bench clear, handle equipment only as directed, and know where the eyewash, sink, and spill kit are before you start.
  • Human samples and data stay private: label with a code, never a name, and dispose of materials in the correct waste container, then wash your hands.

3. Turn in your work

DueCheck Schoology
Hand in
Public health intervention plan combining line list, incidence and prevalence calculations, intervention model with epidemic curve, data-backed recommendation, one success metric, and citations.
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 help

You get two school days for every day you were absent, so this deadline moves with you.

How this lesson connects

Keep using what you learned last class: A line list is the foundational epidemiological tool because standardizing each case into one dated row is what lets you calculate incidence and prevalence and see whether the outbreak is speeding up. Today: A complete intervention plan connects outbreak evidence to a measurable action, because a defined success metric is what lets decision-makers verify whether the intervention worked and correct it if it did not.

Optional: listen or watch a unit review
Optional unit study notebook
How outbreaks are investigated and tracked, from case one to a public-health response.
Open the notebook
Optional review video
Audio overviewVideo overviewMind mapStudy guideFlashcardsQuizData table
Need help? Warm-up, timing, and directions

💡 Big idea: A complete intervention plan connects outbreak evidence to a measurable action, because a defined success metric is what lets decision-makers verify whether the intervention worked and correct it if it did not.

  1. 0-5 minWarm-up: what one number would you watch to know if your intervention worked?
  2. 5-25 minCombine , calculations, and intervention model into one document
  3. 25-45 minWrite recommendation statement backed by outbreak data; add citations
  4. 45-60 minDefine one post-rollout success metric with a target value
  5. 60-72 minFinal check: does every data claim have a citation?
  6. 72-80 minSubmit intervention plan and confirm in tracker
Mr. Mendoza's 5-minute intro
  • Today we finalize Problem 5 with a submission-ready intervention plan.
  • Your , incidence calculations, and intervention model come together into one document.
  • The plan needs one metric someone can monitor after rollout to know if it's working.
  • When you submit today, Problem 5 is complete.
Know by the end
  • A success metric gives decision-makers a way to know if the intervention is working.
  • Citing data sources lets others verify or replicate your recommendation.
  • Combining , model, and plan into one document makes the evidence chain clear.

PLTW connection and today's work

Open Problem 5 in your myPLTW course shell and confirm Problem 5 activities are complete, then finalize and submit your public health intervention plan.

Today's stopping point: All Problem 5 milestones (line list, intervention model) should be wrapped up by 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 5.1.1 Disease Detectives

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

Run the lab
Write the complete plan that states your intervention, the specific case data that supports it, one measurable success metric, and citations, so the evidence chain from data to action to check is visible on one page.
Missed class? Start here
Absent? Use the template order (line list, then chosen intervention, then one metric like weekly incidence dropping below a set number) and write one sentence for each, so you produce a complete short plan even without class time.

Finish the assigned lab safely before starting extra practice.

Lesson resources: reading, slides, and vocabulary
Socratic teaching slide deck

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.

Carry forward

A is the foundational epidemiological tool because standardizing each case into one dated row is what lets you calculate incidence and prevalence and see whether the outbreak is speeding up.

Daily take-home

A complete intervention plan connects outbreak evidence to a measurable action, because a defined success metric is what lets decision-makers verify whether the intervention worked and correct it if it did not.

Inspect the analogy

Wet footprints appear across connected rooms after one person enters from the rain.

  1. Which footprint came first?
  2. Which rooms connect?
  3. What pattern would support more than one entry point?
Rule

Patterns across time and connection can narrow a explanation without proving it by themselves.

Where it breaks

People change behavior, infections have periods, and surveillance data can be incomplete.

Map the analogy to biology
  • Footprints map to recorded cases.
  • Room connections map to exposures.
  • The route hypothesis maps to a limited claim.
Read this first

Driving question: Can you turn your and your intervention model into one plan that a real official could read and act on, with a number they could check in two weeks?

What you already know: A is the foundational epidemiological tool because standardizing each case into one dated row is what lets you calculate incidence and prevalence and see whether the outbreak is speeding up.

New idea: A complete intervention plan connects outbreak evidence to a measurable action, because a defined success metric is what lets decision-makers verify whether the intervention worked and correct it if it did not.

Visual or model: F1. F1. A lesson illustration or teaching diagram for Intervention plan. 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.

  1. Observe or measure the relevant feature in intervention plan.
  2. Organize the observation with a stable evidence ID.
  3. Apply this rule: Patterns across time and connection can narrow a explanation without proving it by themselves.
  4. Choose the option the evidence supports and state the limit of the conclusion.

Real biomedical example: Can you turn your and your intervention model into one plan that a real official could read and act on, with a number they could check in two weeks?

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.

Vocabulary:
  • incidence: The number of new cases of a disease that appear in a population during a set period of time.
  • prevalence: The share of a population that has a particular disease or condition at a given time, often shown as a percentage.
  • morbidity: The presence or rate of disease and illness in a population, describing how often people are sick rather than how many die.
  • mortality: A measure of death within a population, often expressed as the number of deaths from a cause over a set period.
  • : Finding and notifying people who were near someone with an infectious disease so they can be tested, watched, or isolated to slow spread.

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.

Evidence set and decision
E1 · Source fact

Patterns across person, place, and time can narrow an outbreak hypothesis, but they require case definitions, comparison data, and laboratory or epidemiological confirmation before a source is established.

Limit: A classroom map or curve can support a limited hypothesis and next investigation step, not a confirmed source or individual diagnosis.

E2 · Teaching model

Patterns across time and connection can narrow a explanation without proving it by themselves.

Limit: People change behavior, infections have periods, and surveillance data can be incomplete.

E3 · Task criterion

Your plan ties an intervention to outbreak evidence.

Limit: E3 defines the classroom product or success criterion. It is not independent scientific evidence and cannot justify a clinical or causal claim.

PLTW-BFH-2027-04-22 · Simulated classroom evidence scenario

Your role: biomedical design team member

Decision: Your team must decide what the evidence from intervention plan supports before submitting the lab report named on today's page.

  • Write the plan as a strong persuasive paragraph, because a convincing case is what makes an official act on it.
  • No data compares sick people with neighbors who stayed well, so gather that before choosing what to change.
  • Tie your intervention to a specific line-list pattern and name a target drop in weekly incidence officials can check.

Response: State one choice, cite at least two evidence IDs, explain the rule that connects them, and add one limitation. Submit it as the lab report.

Claim ceiling: Today's evidence supports a classroom claim about intervention plan. It cannot prove causation, diagnose a real patient, or justify action outside this room.

Composite case file · PLTW-BFH-2027-04-22

Reason for review: Your team must decide what the evidence from intervention plan supports before submitting the lab report named on today's page.

Context: A recommendation only counts as when it links specific outbreak evidence to a measurable action, because decision-makers need to see both why you are acting and how they will know it worked.

Timeline:
  • T1: Combine your , calculations, and intervention model.
  • T2: State the recommended intervention and the data that supports it.
  • T3: Define one success metric to track after rollout.
  • T4: Add citations for your data and methods.
  • T5: Submit the plan and confirm it in your tracker.
Evidence records:
  • E1: Patterns across person, place, and time can narrow an outbreak hypothesis, but they require case definitions, comparison data, and laboratory or epidemiological confirmation before a source is established.
  • E2: Patterns across time and connection can narrow a explanation without proving it by themselves.
  • E3: Your plan ties an intervention to outbreak 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 Intervention plan. Trace the labeled system, test, or design relationship and identify which evidence should trigger revision. 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.

Watch the trap

Students often think Students think a strong plan is a persuasive paragraph, so writing it convincingly is enough to make it a good recommendation.. The trap: The trap is that persuasion without a success metric cannot be evaluated: if your plan never defines a measurable outcome (like a target drop in weekly incidence), no one can tell whether the intervention worked or failed, so decision-makers cannot act on it or correct it.

Worked example · a parallel case (guides, does not reveal)
Problem 5 public health intervention plan
Completes: Completes the Problem 5 deliverable: an intervention plan combining the line list, incidence and prevalence, the intervention model, a data-backed recommendation, a success metric, and citations.

Title: Intervention Plan, School Gastrointestinal Outbreak.

Evidence summary: line list of 5 cases; incidence rose every day through day 4; prevalence on day 4 was 3 active cases.

Recommended intervention: isolate symptomatic students and add a handwashing/surface-cleaning protocol, because the data shows ongoing day-to-day transmission and a likely contact/surface route.

Supporting data: the steady daily incidence (2, 1, 1, 1 new cases) shows transmission had not stopped on its own.

Success metric: number of NEW cases per day after rollout. Target: incidence drops to 0 new cases for 2 consecutive days (about one incubation period).

Citations: CDC norovirus prevention guidance (cdc.gov); class line-list dataset.

Tracker: marked the Problem 5 intervention plan as submitted.

Plan elementContent
Evidence5-case line list; daily incidence 2,1,1,1
InterventionIsolation + handwashing/cleaning
Success metric0 new cases for 2 straight days
Data sourceCDC guidance; class line list
Intervention plan summary table with evidence, intervention, success metric, and data source.
Why this matters

This model shows the level of evidence and organization needed to complete: Completes the Problem 5 deliverable: an intervention plan combining the line list, incidence and prevalence, the intervention model, a data-backed recommendation, a success metric, and citations.

Build yours step by step
  1. State the question and method.
  2. Present the observations and data with units.
  3. Explain the result, limitations, and next investigation.
Change it for a new task

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 finalized intervention plan on Schoology and confirm in your tracker.

See the full worked example
Portal terms
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.
This unit's vocabulary

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.

Build your vocabulary · optional, for extra credit

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 Intervention plan. 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.

incidence
prevalence
morbidity
mortality
contact tracing

Saved on this device. Show Mr. Mendoza or add these to your notebook glossary to claim the extra credit.

Connected learning centerMeasles: More Than a RashBI: Repair the evidence display. Use this case to apply today's lesson to verified outbreak evidence.
Teacher-posted resources

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 during lessonFor: Everyone
BI Problem 5A Mission File (Botulism)
worksheet/handoutPosted in Schoology
Open in Schoology

Open this when the class reaches this activity and use it to complete the required lesson artifact.

Placement rationale

Matched intervention and epidemiology by path:Biomedical-Innovations/Problem-5_Public-Health-Issue/00_Problem-Overview; keywords:public health, epidemiology, outbreak. Score 154. Visibility: student-schoology (student-facing resource; link through Schoology rather than local path).

Use during lessonFor: Everyone
BI Problem 5B Mission File (High Fever)
worksheet/handoutPosted in Schoology
Open in Schoology

Open this when the class reaches this activity and use it to complete the required lesson artifact.

Placement rationale

Matched intervention and epidemiology by path:Biomedical-Innovations/Problem-5_Public-Health-Issue/00_Problem-Overview; keywords:public health, epidemiology, outbreak. Score 154. Visibility: student-schoology (student-facing resource; link through Schoology rather than local path).

Extension / challengeFor: Ready to go deeper
BI 5.1.2 Public Health in the News Overview
reading/referencePosted in Schoology
Open in Schoology

Use this after the required lesson work when you are ready for a harder application or a deeper connection.

Placement rationale

Matched intervention and epidemiology by path:Biomedical-Innovations/Problem-5_Public-Health-Issue/5.1_Public-Health-Issue; keywords:public health, epidemiology, outbreak. Score 146. 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 intervention plan. It cannot prove causation, diagnose a real patient, or justify action outside this room.

Quick self-check · commit, then reveal

Your plan recommends isolating symptomatic cases to slow the outbreak. Write one success metric that is actually measurable, and say what would count as the intervention failing.

How sure are you?

Write an answer and pick a confidence to unlock the key.

Cumulative WebXam review · flash practice

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.

Tap an answer to check it · nothing is recorded or graded
[Review: Validating Your Prototype: literature review, decision matrices, and metrics] A team uses a decision matrix to choose among prototype designs. What is the main purpose of this tool?
[Review: Validating Your Prototype: literature review, decision matrices, and metrics] A team uses a decision matrix to choose among prototype designs. What is the main purpose of this tool?
[Review: Environmental Exposure: pathways, dose, and public-health risk] When assessing the risk of a pollutant to a community, which two factors must be considered together?
Which term refers to the number of NEW cases of a disease that occur in a population during a specific time period?
Missed class or ready for more?
🔬 Pre-lab simulation

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.

Who Was Patient Zero?
Open the simulation →
Lab · prepare, conduct, complete
1Prepare
Pre-lab pass · clear all six to go to the bench
0/6

I can name the procedure's purpose and the evidence I will record. I can state today's specific hazards and the control for each. If this deck does not name them, I ask Mr. Mendoza before I touch anything. My data table is ready before materials are handled.

Finish the checklist before you handle any material.

Bring / set up
Computer with spreadsheet softwareProvided outbreak datasetLine-list templateCalculatorDesign notebookPrinted case summary sheets
Safety · specific to today's hazards
  • Wear the required PPE, keep the bench clear, handle equipment only as directed, and know where the eyewash, sink, and spill kit are before you start.
  • Human samples and data stay private: label with a code, never a name, and dispose of materials in the correct waste container, then wash your hands.
Review Lab Safety (rules, PPE, SDS, emergencies) and check your contract + test
2Conduct (Argument-Driven Inquiry)
  1. 1Before materials are handled, identify the purpose, variables or comparison, controls, measurement units, and stop-work condition.
  2. 2Combine your line list, calculations, and intervention model.
  3. 3State the recommended intervention and the data that supports it.
  4. 4Define one success metric to track after rollout.
  5. 5Add citations for your data and methods.
  6. 6Submit the plan and confirm it in your tracker.
  7. 7Record each result in the prepared table before interpreting it. Mark missing, repeated, or invalid results truthfully.
  8. 8Complete the named cleanup and waste route, remove PPE safely, wash hands when required, and confirm the station is ready for the next group.
Prepare this data table before materials are handled
Trial or sample IDIndependent conditionMeasured result with unitsObservation before interpretationQuality-control note
     
     
     
CDC: Principles of Epidemiology
3Complete
Argue from your evidence, then compare what you predicted to what happened. Error analysis names a specific method limit, never "human error".
You predicted

Before the procedure, predict the result and cite the rule behind the prediction.

What actually happened

After the procedure, compare the result with the prediction and name one limitation or source of uncertainty.

Your lab report is graded on the rubric below, with extra weight on error analysis and method.
Where this leads: careers
What to do if you were absent
If YOU are absent

Today is individual work you can do from home: complete the same target above, then submit your Lab report.

FOR A GRADE
Open Schoology

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.

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:

CDC: Principles of Epidemiology
Optional extra credit (async)

You'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
How this is graded
For: Lab report: Public health intervention plan combining line list, incidence and prevalence calculations, intervention model with epidemic curve, data-backed recommendation, one success metric, and citations.
  • 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
    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.
  • Error analysis and method · counts double
    Name a specific limit of the method and how it moved your result, and compare what you predicted to what happened. "Human error" does not count; say what about the procedure or instrument caused it.