Exposure pathway
Trace how a specific toxin travels from its source to the human body.
Labeled exposure pathway diagram showing source, transport medium, route of entry, and target organ for one chosen pollutant.
- 1Do thisTrace how a specific toxin travels from its source to the human body.
- 2Use this resource
- 3Submit thisNotebook check: Labeled exposure pathway diagram showing source, transport medium, route of entry, and target organ for one chosen pollutant.
- 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) › Exposure pathways, toxins, dose, pollutants, public health risk. › Notebook checkOpen Schoology
- 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: Every environmental toxin follows a pathway from source to human target organ.
- 0-5 minWarm-up: what happens inside the body when you breathe smog?
- 5-15 minChoose a pollutant; identify source and transport medium
- 15-35 minMap route of exposure and target organ system
- 35-55 minDraw and label the full pathway diagram
- 55-70 minPartner check: can they trace your diagram without your explanation?
- 70-80 minExit ticket: name the route of exposure and target organ for your pollutant
- • Today we build the mental model that connects pollution in the environment to disease in the body.
- • A pathway diagram is a tool epidemiologists and toxicologists use to plan interventions.
- • You'll pick one real pollutant and trace every step from where it starts to where it lands in the body.
- • Labeling each step accurately is what separates a scientific diagram from a guess.
- 1Pick one pollutant such as lead, particulate matter, or a pesticide.
- 2Identify its source and the medium it travels through, such as air, water, or soil.
- 3Map the route of exposure: inhalation, ingestion, or skin contact.
- 4Note which organ system the toxin affects.
- 5Draw a labeled pathway diagram from source to target organ.
- • Your diagram traces a toxin from source through medium to the body.
- • You correctly labeled the route of exposure and target organ.
- • Exposure requires a source, a transport medium, and a route of entry into the body.
- • Knowing the pathway lets you identify where intervention will break the exposure chain.
- • Target organ identification connects environmental data to clinical health outcomes.
Your PLTW work today
Exposure pathways, toxins, dose, pollutants, public health risk. · Exposure pathway
Day 2 of this lesson. Open this exact section in myPLTW (reached through Schoology), then do the work below.
Do this: Open Problem 4 in your myPLTW course shell and navigate to the current activity, then trace your chosen pollutant from source to target organ in a pathway diagram.
Attach your pathway diagram to the Problem 4 evidence portfolio.
The environmental justice debate is done; by end of today your labeled exposure pathway diagram should be uploaded.
Photo or scan of your labeled pathway diagram uploaded before leaving class.
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.
Exposure pathways, toxins, dose, pollutants, public health risk. · Exposure pathway
Open Problem 4 in your myPLTW course shell and navigate to the current activity, then trace your chosen pollutant from source to target organ in a pathway diagram.
The environmental justice debate is done; by end of today your labeled exposure pathway diagram should be uploaded.
This is how Mr. Mendoza sees the class keeping pace with PLTW. Be honest, it only helps if it is accurate.
🎯 Trace how a specific toxin travels from its source to the human body.
- Pick one pollutant such as lead, particulate matter, or a pesticide.
- Identify its source and the medium it travels through, such as air, water, or soil.
- Map the route of exposure: inhalation, ingestion, or skin contact.
- Note which organ system the toxin affects.
- Draw a labeled pathway diagram from source to target organ.
Notebook check: Labeled exposure pathway diagram showing source, transport medium, route of entry, and target organ for one chosen pollutant.
Submit on SchoologyUpload by 11:29 PM for full credit.
| Task | Who |
|---|---|
| Pick one pollutant such as lead, particulate matter, or a pesticide. | _______ |
| Identify its source and the medium it travels through, such as air, water, or soil. | _______ |
| Map the route of exposure: inhalation, ingestion, or skin contact. | _______ |
| Note which organ system the toxin affects. | _______ |
| Draw a labeled pathway diagram from source to target organ. | _______ |
Working solo? Put your own name in "Who" for every row.
- Your diagram traces a toxin from source through medium to the body.
- You correctly labeled the route of exposure and target organ.
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.
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 the CMSD website, click Clever, sign in with your Microsoft (district) account, then open Schoology from Clever.
Lab & supplies
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 Notebook check.
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:
EPA: Learn About Environmental HealthOptional 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- 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 Wed, Mar 17, 2027 · Exposure pathway here. Use a clear file name (your initials + project). Routine work still goes to Schoology (via the CMSD portal).
Upload a project