Forensic evidence table
Safety gate · before any work
- No biological materials handled today; this is a documentation session.
- Keep scenario materials organized and do not share scenario details outside class if they involve simulated sensitive data.
- If any scenario involves simulated human biological material descriptions, treat all information with the same discretion as real patient data.
Do now
Build a forensic evidence table that maintains a proper chain of custody.
- Hand in
- Forensic evidence table with each item, collector, date and location of collection, all custody transfers with dates and handlers, storage and sealing method, and flagged documentation gaps.
- 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.
For the evidence in your scenario, can you build a table that would survive a defense attorney asking 'How do you know no one altered this between the scene and this room?'
Build a evidence table that maintains a proper .
- • Your table tracks each item's .
- • You flagged any break that would weaken the evidence.
- For one piece of evidence, list the three facts you must record the instant it is collected.
- Why does a single undocumented hour make a whole sample legally questionable, even if the sample is real?
- 1List each piece of evidence in your scenario.
- 2For each item, record who collected it, when, and where.
- 3Document every transfer of custody with date and handler.
- 4Note how each item was sealed and stored.
- 5Flag any gap that could compromise the evidence.
What did this day actually feel like?
Forensic evidence table
Organizing evidence so somebody else could audit the chain of reasoning. Same discipline as the design log, applied to a different problem.
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.
Organizing evidence so somebody else could audit the chain of reasoning. Same discipline as the design log, applied to a different problem.
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: An unbroken makes evidence valid because the documented record of every handler and storage step is the only thing that lets you rule out tampering, so a single gap creates doubt no matter how genuine the sample is.
- 0-5 minWarm-up: why would a gap in a make evidence inadmissible?
- 5-20 minList all evidence items in your scenario
- 20-40 minRecord collector, date, location, and storage method for each item
- 40-55 minDocument all transfers with date and handler name
- 55-70 minFlag any gap or missing documentation in the custody record
- 70-80 minExit ticket: describe one gap and its effect on evidence reliability
- • evidence is only as reliable as its documentation.
- • Today you build the table that would make your evidence hold up in court or .
- • Every handoff, every seal, every storage condition gets recorded: no exceptions.
- • Flagging your own gaps now is far better than having them exposed later.
- • Each evidence transfer must be documented with a date, the name of the handler, and the reason for transfer.
- • Sealing and storage conditions are part of the custody record because degradation affects reliability.
- • Any gap in documentation creates reasonable doubt about whether the evidence was altered.
Forensic chain-of-custody basics, independent project claim, final portfolio audit; this is the last content week before WebXam review. · evidence table
Day 2 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 7 or 8 in your myPLTW course shell and navigate to the evidence activity, then build a chain-of-custody table for your forensic scenario.
Attach your evidence table to the Problem 7 or 8 portfolio.
The research ethics debate is done; chain-of-custody documentation is an early project milestone, so submit today.
Completed evidence table with flagged documentation gaps submitted 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.
Forensic chain-of-custody basics, independent project claim, final portfolio audit; this is the last content week before WebXam review. · Forensic evidence table
Open Problem 7 or 8 in your myPLTW course shell and navigate to the evidence activity, then build a chain-of-custody table for your forensic scenario.
The research ethics debate is done; chain-of-custody documentation is an early project milestone, so submit today.
This is how Mr. Mendoza sees the class keeping pace with PLTW. Be honest, it only helps if it is accurate.
🎯 Build a evidence table that maintains a proper .
- List each piece of evidence in your scenario.
- For each item, record who collected it, when, and where.
- Document every transfer of custody with date and handler.
- Note how each item was sealed and stored.
- Flag any gap that could compromise the evidence.
Data table: evidence table with each item, collector, date and location of collection, all custody transfers with dates and handlers, storage and sealing method, and flagged documentation gaps.
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 |
|---|---|
| List each piece of evidence in your scenario. | _______ |
| For each item, record who collected it, when, and where. | _______ |
| Document every transfer of custody with date and handler. | _______ |
| Note how each item was sealed and stored. | _______ |
| Flag any gap that could compromise the evidence. | _______ |
Working solo? Put your own name in "Who" for every row.
- Your table tracks each item's .
- You flagged any break that would weaken the evidence.
- 1Do thisBuild a forensic evidence table that maintains a proper chain of custody.
- 2Use this resource
- 3Submit thisData table: Forensic evidence table with each item, collector, date and location of collection, all custody transfers with dates and handlers, storage and sealing method, and flagged documentation gaps.
- 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) › Forensic chain-of-custody basics, independent project claim, final portfolio audit; this is the last content week before WebXam review. › 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.
Independent research carries the same ethical obligations as professional science because the potential to harm a real person, not the size of the project, is what creates the duty.
An unbroken makes evidence valid because the documented record of every handler and storage step is the only thing that lets you rule out tampering, so a single gap creates doubt no matter how genuine the sample is.
A detective board holds observations, possible explanations, and one next question.
- Which notes are direct observations?
- Which notes are explanations?
- What new evidence would separate the explanations?
Keep observations separate from explanations, then collect the evidence that can distinguish the options.
Biomedical investigations use controlled procedures and validated measurements, not intuition alone.
- • Board notes map to E1-E3.
- • Possible explanations map to the decision options.
- • The next question maps to the evidence-based action.
Driving question: For the evidence in your scenario, can you build a table that would survive a defense attorney asking 'How do you know no one altered this between the scene and this room?'.
What you already know: Independent research carries the same ethical obligations as professional science because the potential to harm a real person, not the size of the project, is what creates the duty.
New idea: An unbroken makes evidence valid because the documented record of every handler and storage step is the only thing that lets you rule out tampering, so a single gap creates doubt no matter how genuine the sample is.
Visual or model: F1. F1. A lesson illustration or teaching diagram for Forensic evidence table. 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 evidence table.
- Organize the observation with a stable evidence ID.
- Apply this rule: Keep observations separate from explanations, then collect the evidence that can distinguish the options.
- Choose the option the evidence supports and state the limit of the conclusion.
Real biomedical example: For the evidence in your scenario, can you build a table that would survive a defense attorney asking 'How do you know no one altered this between the scene and this room?'.
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.
- • : The documented record of who handled a piece of evidence, when, and where, proving it was never lost, swapped, or tampered with.
- • : A focused, answerable question that frames a study and guides what data to collect.
- • methodology: The detailed plan of methods, materials, and steps a study follows so the work is systematic and others can repeat it.
- • claim: The position you are defending, stated in one clean sentence; if you cannot say it simply, you do not have it yet.
- • evidence: The facts, data, and cases that carry your claim. Opinions are free; evidence costs homework.
- • limitation: A weakness or boundary of a study, design, or method that restricts how far its results can be trusted or applied.
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.
Each evidence transfer must be documented with a date, the name of the handler, and the reason for transfer.
Limit: E1 supplies context or an observation; it does not by itself establish the explanation.
An unbroken makes evidence valid because the documented record of every handler and storage step is the only thing that lets you rule out tampering, so a single gap creates doubt no matter how genuine the sample is.
Limit: E2 is a teaching statement or comparison and must be checked against the task evidence.
Your table tracks each item's .
Limit: E3 supports only the result or product criterion named here; it cannot justify a broader clinical or causal claim.
PLTW-BFH-2027-05-13 · Simulated classroom evidence scenario
Your role: biomedical design team member
Decision: Your team must decide what the evidence from evidence table supports before submitting the labeled and result claim named on the lesson page.
- • Choose the strongest supported explanation.
- • Choose the next evidence to collect.
- • Hold the decision because the evidence is insufficient.
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 evidence table. It cannot by itself prove causation, establish a real clinical diagnosis, or justify action outside this classroom task.
Reason for review: Your team must decide what the evidence from evidence table supports before submitting the labeled and result claim named on the lesson page.
Context: Evidence is only as trustworthy as its documentation; an unbroken, timestamped record of who held it and how it was stored is what lets anyone rule out tampering after the fact.
- • T1: List each piece of evidence in your scenario.
- • T2: For each item, record who collected it, when, and where.
- • T3: Document every transfer of custody with date and handler.
- • T4: Note how each item was sealed and stored.
- • T5: Flag any gap that could compromise the evidence.
- • E1: Each evidence transfer must be documented with a date, the name of the handler, and the reason for transfer.
- • E2: An unbroken makes evidence valid because the documented record of every handler and storage step is the only thing that lets you rule out tampering, so a single gap creates doubt no matter how genuine the sample is.
- • E3: Your table tracks each item's .
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 evidence table. 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.
Students often think Students think is just proof the evidence is real, so as long as the item is genuine the paperwork is a formality.. The trap: That is a trap because the record proves the evidence was not altered, not just that it existed. A real sample with a documentation gap is legally as weak as a fake one, because the gap is where tampering could have happened undetected.
My scenario: a swab and a labeled tube collected from a mock scene.
For each item I tracked who collected it, when and where, every transfer, and how it was stored. I flagged one gap where a handler signature was missing.
Reading the table below: Item 1 has a complete record. Item 2 has a flagged gap (no handler recorded for the lab transfer), which I would fix before relying on it.
| Item | Collected by, date, place | Transfers (date, handler) | Storage and seal | Gap flagged |
|---|---|---|---|---|
| Swab A | Tech 1, 5/2, Room 3 | 5/2 to Lab (Tech 2) | Sealed bag, fridge 4 C | None |
| Tube B | Tech 1, 5/2, Room 3 | 5/3 to Lab (no handler logged) | Capped tube, freezer | Yes, missing handler |
This model shows the level of evidence and organization needed to complete: Completes the forensic evidence table: each item with its collector, collection date and location, every custody transfer with date and handler, the sealing and storage method, and flagged documentation gaps.
- 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 forensic evidence table on the class site today.
- 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 Forensic evidence table. 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 project by path:Biomedical-Innovations/Problem-7_Forensic-Autopsy/7.1_Forensic-Autopsy; keywords:forensic, autopsy, fetal pig, organ. Score 158. 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 project by path:Biomedical-Innovations/Problem-7_Forensic-Autopsy/7.1_Forensic-Autopsy; keywords:forensic, autopsy, fetal pig, organ. Score 158. Visibility: student-schoology (student-facing resource; link through Schoology rather than local path).
Use this as the classroom resource for project.
Placement rationale
Matched project by path:Biomedical-Innovations/Problem-7_Forensic-Autopsy/7.1_Forensic-Autopsy; keywords:forensic, autopsy, fetal pig, organ. Score 158. 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 evidence table. It cannot by itself prove causation, establish a real clinical diagnosis, or justify action outside this classroom task.
Your table shows a swab collected Monday and analyzed Thursday, but no entry for Tuesday or Wednesday. Is this evidence still usable, and what exactly is the problem?
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: No biological materials handled today; this is a documentation session. My data table is ready before materials are handled.
Finish the checklist before you handle any material.
- • No biological materials handled today; this is a documentation session.
- • Keep scenario materials organized and do not share scenario details outside class if they involve simulated sensitive data.
- • If any scenario involves simulated human biological material descriptions, treat all information with the same discretion as real patient data.
- 1Before materials are handled, identify the purpose, variables or comparison, controls, measurement units, and stop-work condition.
- 2List each piece of evidence in your forensic scenario.
- 3For each item, record who collected it, when, and where.
- 4Document every transfer of custody with date and handler.
- 5Note how each item was sealed and stored.
- 6Flag any gap that could compromise the evidence.
- 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.
Today is individual work you can do from home: complete the same target above, then submit your Data table.
Open the drop folderTurn 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:
NIST Forensic ScienceYou'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.