Environmental data lab
Safety gate · before any work
- 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.
Do now
Analyze a public environmental dataset to estimate exposure dose and bioaccumulation risk.
- Hand in
- Environmental dataset analysis showing pollutant concentrations, published threshold, dose estimate, threshold comparison, and bioaccumulation flag if applicable.
- 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.
The dataset lists a pollutant concentration in the air or water, but a number with units is not yet a risk, so how do you turn a concentration into a dose a body actually receives and decide whether that crosses the safe line?
Analyze a public environmental dataset to estimate exposure dose and risk.
- • You compared dataset values to a threshold.
- • You estimated a dose and flagged any concern.
- If two people drink water with the exact same pollutant concentration, could they still receive different doses? Explain in one sentence.
- What would you need to know to turn a concentration into an amount that enters a person?
- 1Open the provided air or water quality dataset.
- 2Identify the pollutant concentration column and its units.
- 3Compare measured values to a published safe threshold.
- 4Estimate dose using concentration and assumed intake.
- 5Flag any values suggesting over time.
What did this day actually feel like?
Environmental data lab
LAB Real environmental data, multiple sites, comparing against a standard. Some sites exceeded it.
Numbers about places I have been are different from numbers about nowhere.
Turned in: data table → Data Tables 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.
Real environmental data, multiple sites, comparing against a standard. Some sites exceeded it.
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
Lab day: Tier 1 is the whole class at the bench. No extension today.
🔑 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 concentration only becomes a health risk once intake and body weight turn it into a dose, so you compare dose (not concentration) to the safe threshold, and can push a safe-looking level into a dangerous one over time.
- 0-5 minWarm-up: what does a parts-per-million concentration mean in practice?
- 5-20 minOpen dataset; locate the pollutant concentration column and note units
- 20-40 minCompare values to published safe threshold; flag exceedances
- 40-60 minEstimate dose using concentration and assumed daily intake
- 60-72 minIdentify any time-trend suggesting ; note your reasoning
- 72-80 minExit ticket: report average concentration, threshold, and whether dose exceeds it
- • Today we work with the same type of data the EPA uses to set health warnings.
- • You'll open a real public dataset, identify the concentration column, and do a dose calculation.
- • Comparing your number to the safe threshold is how regulators decide when to act.
- • If values are rising over time, that's a signal worth flagging.
- • Dose estimation requires knowing concentration, volume or mass intake, and body weight.
- • A safe threshold is a regulatory limit below which risk is considered acceptable.
- • occurs when a substance accumulates in faster than it is eliminated.
Exposure pathways, toxins, dose, pollutants, public health risk. · Environmental data lab
Day 3 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 4 in your myPLTW course shell and navigate to the current activity, then analyze a public environmental dataset to estimate exposure dose and compare to a safe threshold.
Add your data analysis results to the Problem 4 evidence portfolio.
The exposure pathway diagram is done; this is a mid-Problem 4 milestone, so check your activity guide and confirm your data analysis is on pace.
Screenshot of your dose calculation and threshold comparison attached as evidence.
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.
Exposure pathways, toxins, dose, pollutants, public health risk. · Environmental data lab
Open Problem 4 in your myPLTW course shell and navigate to the current activity, then analyze a public environmental dataset to estimate exposure dose and compare to a safe threshold.
The exposure pathway diagram is done; this is a mid-Problem 4 milestone, so check your activity guide and confirm your data analysis is on pace.
This is how Mr. Mendoza sees the class keeping pace with PLTW. Be honest, it only helps if it is accurate.
🎯 Analyze a public environmental dataset to estimate exposure dose and risk.
- Open the provided air or water quality dataset.
- Identify the pollutant concentration column and its units.
- Compare measured values to a published safe threshold.
- Estimate dose using concentration and assumed intake.
- Flag any values suggesting over time.
Data table: Environmental dataset analysis showing pollutant concentrations, published threshold, dose estimate, threshold comparison, and flag if applicable.
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 |
|---|---|
| Open the provided air or water quality dataset. | _______ |
| Identify the pollutant concentration column and its units. | _______ |
| Compare measured values to a published safe threshold. | _______ |
| Estimate dose using concentration and assumed intake. | _______ |
| Flag any values suggesting over time. | _______ |
Working solo? Put your own name in "Who" for every row.
- You compared dataset values to a threshold.
- You estimated a dose and flagged any concern.
- 1Do thisAnalyze a public environmental dataset to estimate exposure dose and bioaccumulation risk.
- 2Use this resource
- 3Submit thisData table: Environmental dataset analysis showing pollutant concentrations, published threshold, dose estimate, threshold comparison, and bioaccumulation flag if applicable.
- 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) › Exposure pathways, toxins, dose, pollutants, public health risk. › Data tableOpen 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.
Pollution sources were sited by past decisions, so environmental health burdens fall harder on lower-income and marginalized neighborhoods, and exposure data reveals that uneven pattern.
A concentration only becomes a health risk once intake and body weight turn it into a dose, so you compare dose (not concentration) to the safe threshold, and can push a safe-looking level into a dangerous one over time.
A bridge prototype is tested against a load limit, cost limit, and user need before revision.
- Which requirement is a criterion?
- Which limit is a constraint?
- What test result should trigger a redesign?
A design improves when evidence is compared with explicit criteria and constraints.
Biomedical designs also require , ethics, and biological validation beyond a physical prototype test.
- • Bridge requirements map to design criteria.
- • Load results map to E1-E3.
- • Revision maps to the next evidence-based iteration.
Driving question: The dataset lists a pollutant concentration in the air or water, but a number with units is not yet a risk, so how do you turn a concentration into a dose a body actually receives and decide whether that crosses the safe line?
What you already know: Pollution sources were sited by past decisions, so environmental health burdens fall harder on lower-income and marginalized neighborhoods, and exposure data reveals that uneven pattern.
New idea: A concentration only becomes a health risk once intake and body weight turn it into a dose, so you compare dose (not concentration) to the safe threshold, and can push a safe-looking level into a dangerous one over time.
Visual or model: F1. F1. A lesson illustration or teaching diagram for Environmental data lab. 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 Environmental data lab.
- Organize the observation with a stable evidence ID.
- Apply this rule: A design improves when evidence is compared with explicit criteria and constraints.
- Choose the option the evidence supports and state the limit of the conclusion.
Real biomedical example: An environmental-health claim is defensible only when the graph, comparison, and limitation are cited directly in the reasoning. Source: Khan Academy: Correlation and causality.
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 poisonous substance produced by a living organism, such as bacteria, plants, or animals, that can damage cells or disrupt body functions.
- • exposure: Contact with a substance, agent, or condition that could affect health, such as a chemical, , or environmental factor.
- • dose: The measured amount of a drug or substance given at one time, chosen to be effective while staying safe for the patient.
- • pollutant: A harmful substance released into air, water, or soil that can damage ecosystems and human health.
- • : The gradual buildup of a substance, such as a , inside an organism faster than the body can break it down or remove it.
- • risk: The chance that a harmful event, such as getting a disease, will happen within a given group or time period.
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.
Dose estimation requires knowing concentration, volume or mass intake, and body weight.
Limit: E1 supplies context or an observation; it does not by itself establish the explanation.
A concentration only becomes a health risk once intake and body weight turn it into a dose, so you compare dose (not concentration) to the safe threshold, and can push a safe-looking level into a dangerous one over time.
Limit: E2 is a teaching statement or comparison and must be checked against the task evidence.
You compared dataset values to a threshold.
Limit: E3 supports only the result or product criterion named here; it cannot justify a broader clinical or causal claim.
PLTW-BFH-2027-04-08 · Simulated classroom evidence scenario
Your role: biomedical design team member
Decision: Your team must decide what the evidence from Environmental data lab supports before submitting the labeled and result claim named on the lesson page.
- • Proceed because the readiness evidence is complete.
- • Pause and correct the named setup or gap.
- • Repeat the measurement because quality controls are not acceptable.
Response: State one choice, cite at least two evidence IDs, explain the rule that connects them, and add one limitation. Submit it as the labeled and result claim.
Claim ceiling: The supplied lesson evidence can support an observation, pattern, classroom mechanism, or next-step decision about Environmental data lab. It cannot by itself prove causation, establish a real clinical diagnosis, or justify action outside this classroom task.
= final volume / sample volume. New concentration = starting concentration / dilution factor.
Mix 1 mL of sample to a final volume of 10 mL. The is 10. A 100 mg/mL starting sample becomes 10 mg/mL.
Use the same volume units before dividing. Concentration keeps its original concentration unit.
Apply the same setup to one supplied dilution or dose. Show the factor, new value, units, and a reasonableness check.
Students often think Students often treat concentration and dose as the same thing, assuming that if a level is 'below the limit' the water or air is automatically safe for everyone.. The trap: Concentration times how much you take in times how long is what determines dose, so a 'safe' concentration can still deliver an unsafe dose to a small child, a heavy drinker, or someone exposed for years. Reading the concentration alone hides who is actually at risk.
Dataset: city drinking-water lead samples (units: parts per billion, ppb).
Measured values: 8, 12, 15, 22, 9 ppb. Average = 13.2 ppb.
Published threshold: EPA lead action level is 15 ppb.
Comparison: The average (13.2) is below 15 ppb, but two individual samples (15 and 22 ppb) meet or exceed the action level, so some homes are over the limit.
Dose estimate: For a 20 kg child drinking 1 liter/day at 22 ppb: 22 micrograms/L times 1 L = 22 micrograms/day, divided by 20 kg = about 1.1 micrograms per kg per day.
Bioaccumulation flag: Flagged. Lead accumulates in bone over time and is eliminated slowly, so repeated daily intake builds up rather than clearing, which raises long-term risk even at concentrations near the threshold.
| Sample | Lead (ppb) | Over 15 ppb action level? |
|---|---|---|
| 1 | 8 | No |
| 2 | 12 | No |
| 3 | 15 | At limit |
| 4 | 22 | Yes |
| 5 | 9 | No |
This model shows the level of evidence and organization needed to complete: Completes the Problem 4 data lab: a dataset analysis comparing measured pollutant concentrations to a published safe threshold, a dose estimate, and a bioaccumulation flag.
- Name the variables and include units.
- Enter observations without changing the raw values.
- Check labels, calculations, and patterns before interpreting the data.
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 completed data table and written conclusion on the class site.
- 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 Environmental data lab. 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 Environmental exposure and community health by path:Biomedical-Innovations/Problem-4_Environmental-Health/4.1_Environmental-Health; keywords:environmental, water quality. Score 142. 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 Environmental exposure and community health by path:Biomedical-Innovations/Problem-4_Environmental-Health/4.1_Environmental-Health; keywords:environmental, exposure. Score 138. 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 Environmental exposure and community health by path:Biomedical-Innovations/Problem-4_Environmental-Health/4.1_Environmental-Health; keywords:environmental. Score 134. 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 Environmental data lab. It cannot by itself prove causation, establish a real clinical diagnosis, or justify action outside this classroom task.
A chemical's measured concentration in a lake is below the safety threshold, yet fish in that lake are unsafe to eat. Give one reason this can happen.
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▸
I can name the procedure's purpose and the evidence I will record. I can identify each named hazard and the control that reduces it: 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. My data table is ready before materials are handled.
Finish the checklist before you handle any material.
- • 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.
- 1Before materials are handled, identify the purpose, variables or comparison, controls, measurement units, and stop-work condition.
- 2Open the provided air or water quality dataset.
- 3Identify the pollutant concentration column and its units.
- 4Compare measured values to a published safe threshold.
- 5Estimate dose using concentration and assumed intake.
- 6Flag any values suggesting bioaccumulation over time.
- 7Record each result in the prepared table before interpreting it. Mark missing, repeated, or invalid results truthfully.
- 8Complete the named cleanup and waste route, remove PPE safely, wash hands when required, and confirm the station is ready for the next group.
| Trial or sample ID | Independent condition | Measured result with units | Observation before interpretation | Quality-control note |
|---|---|---|---|---|
Before the procedure, predict the result and cite the rule behind the prediction.
After the procedure, compare the result with the prediction and name one limitation or source of uncertainty.
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.
Download the assigned EPA public dataset, compute the average pollutant concentration, and write whether it exceeds the safe limit.
EPA outdoor air quality dataThen submit your Data table. 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.
Class still runs. Complete the online activity above (it's self-guided). Need the concept taught without a teacher? Use this authoritative explainer:
EPA: Learn About Environmental HealthYou'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.
- 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.
- Error analysis and method · counts doubleName 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.