Wed, Apr 28, 2027Spring (Semester 2) · Week 15Day 64 of 6780-min block

Forensic evidence table

Today's target

Build a forensic evidence table that maintains a proper chain of custody.

Due today · Data table Required

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.

Your 4 steps today
  1. 1
    Do this
    Build a forensic evidence table that maintains a proper chain of custody.
  2. 2
  3. 3
    Submit this
    Data 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.
  4. 4
    Submit it here
    1. 1CMSD website. Go to clevelandmetroschools.org and click the Clever button.
    2. 2Clever. Clever opens. Sign in if it asks.
    3. 3Microsoft (district) login. Use your district Microsoft account (the one for school).
    4. 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) › Forensic chain-of-custody basics, independent project claim, final portfolio audit; no new curriculum after Dec 11. › Data table
    Open Schoology
Were you absent? Jump to the make-up plan
Where this fits
Tested on (Ohio WebXam)
Biotechnology for Health and Disease · 072125
PLTW lesson
BI · Forensic evidence table
WebXam domain
Microbiology Testing and Technology
Evidence to produce
Data table
Lab / skill
Evidence table template (printed or digital), Scenario briefing document
Quick glossary
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.
Learn first

Minute-by-minute · 80-minute block

💡 Big idea: An unbroken chain of custody is what makes forensic evidence legally and scientifically valid.

  1. 0-5 minWarm-up: why would a gap in a chain of custody make evidence inadmissible?
  2. 5-20 minList all evidence items in your forensic scenario
  3. 20-40 minRecord collector, date, location, and storage method for each item
  4. 40-55 minDocument all transfers with date and handler name
  5. 55-70 minFlag any gap or missing documentation in the custody record
  6. 70-80 minExit ticket: describe one gap and its effect on evidence reliability
Mr. Mendoza's 5-minute intro
  • Forensic evidence is only as reliable as its documentation.
  • Today you build the chain of custody table that would make your evidence hold up in court or peer review.
  • Every handoff, every seal, every storage condition gets recorded: no exceptions.
  • Flagging your own gaps now is far better than having them exposed later.
Do this, step by step
  1. 1List each piece of evidence in your forensic scenario.
  2. 2For each item, record who collected it, when, and where.
  3. 3Document every transfer of custody with date and handler.
  4. 4Note how each item was sealed and stored.
  5. 5Flag any gap that could compromise the evidence.
You'll be able to
  • Your table tracks each item's chain of custody.
  • You flagged any break that would weaken the evidence.
Know by the end
  • 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.
📺 Tutor me: NIST: forensic science basics
Do the work

Your PLTW work today

Open this PLTW section today

Forensic chain-of-custody basics, independent project claim, final portfolio audit; no new curriculum after Dec 11. · Forensic evidence table

Day 2 of this lesson. Open this exact section in myPLTW (reached through Schoology), then do the work below.

Do this: Open Problem 7 or 8 in your myPLTW course shell and navigate to the forensic evidence activity, then build a chain-of-custody table for your forensic scenario.

Complete

Attach your evidence table to the Problem 7 or 8 portfolio.

How far to get

The research ethics debate is done; chain-of-custody documentation is an early forensic project milestone, so submit today.

Upload as evidence

Completed forensic evidence table with flagged documentation gaps submitted as evidence.

All PLTW activities are completed inside the PLTW course environment — this page only gives direction. Submit producibles on Schoology.

The plan

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.

Forensic chain-of-custody basics, independent project claim, final portfolio audit; no new curriculum after Dec 11.Day 2 of this projectSee the full week plan
Today's PLTW target

Forensic chain-of-custody basics, independent project claim, final portfolio audit; no new curriculum after Dec 11. · Forensic evidence table

Open Problem 7 or 8 in your myPLTW course shell and navigate to the forensic 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 forensic 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.

1 · What you do today

🎯 Build a forensic evidence table that maintains a proper chain of custody.

  • List each piece of evidence in your forensic 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.
2 · Turn in today

Data 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.

Submit on Schoology

Upload by 11:29 PM for full credit.

3 · Who's doing what (team)
TaskWho
List each piece of evidence in your forensic 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.

4 · Words I can use correctly
5 · I'm successful today when I can…
  • Your table tracks each item's chain of custody.
  • You flagged any break that would weaken the evidence.
6 · Reflection & next steps
Where are you today?0/7 checked
Pick your period and code first.
Explore

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.

Use during lessonFor: Everyone
Activity 7.1.1 Autopsy Report (blank form)
worksheet/handoutOpens here
Open the file

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

Placement rationale

Matched Forensic autopsy 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 during lessonFor: Everyone
7.1.1 Organ Measurement Worksheet (blank)
worksheet/handoutOpens here
Open the file

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

Placement rationale

Matched Forensic autopsy 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 during lessonFor: Everyone
7.1.1 Organ Weight and Length Data Sheet
worksheet/handoutOpens here
Open the file

Use this as the classroom resource for Forensic autopsy project.

Placement rationale

Matched Forensic autopsy 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 the CMSD website, click Clever, sign in with your Microsoft (district) account, then open Schoology from Clever.

Lab day

Lab & supplies

Bring / set up
Evidence table template (printed or digital)Scenario briefing documentRuler and pencil for paper documentation if handwrittenColor-coded labels or sticky flags for gap notation
Safety / SOP
  • 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.
Words

This unit's vocabulary

chain of custodyresearch questionmethodologyclaimevidencelimitation

Tap the speaker to hear a term. Weekly vocabulary task: add two of these terms to your notebook glossary with a definition and an example in your own words.

Check yourself

WebXam practice

Tap an answer to check it · nothing is recorded or graded
A documented record showing who handled a piece of evidence, when, and why is called the:
When documenting findings in a forensic laboratory notebook, what type of writing device should you use?
Before collecting DNA from a living participant for a forensic research project, what must the researcher obtain?
A clearly stated forensic research question should do which of the following?
Check yourself

Cumulative WebXam review

A quick mixed-review pulling questions from earlier units plus today, so the WebXam material stays fresh.

Tap an answer to check it · nothing is recorded or graded
[Review: Communicating Public Health: audience, privacy, and evidence-based products] Usability testing of a health education website shows that users cannot find the main instructions. What should the team do?
[Review: Recombinant DNA Workflow: cutting, joining, and moving genes safely] In which storage cabinet should you keep the rubbing (isopropyl) alcohol used to sterilize a molecular biology bench?
[Review: Transformation and Gels: selection, digests, and reading the bands] After a restriction digest, you separate the DNA fragments on a gel. A reference lane of fragments of known sizes is included to estimate the sizes of your bands. This reference is the:
A documented record showing who handled a piece of evidence, when, and why is called the:
Explore

Where this leads — careers

Safety net

What to do if you were absent

If YOU are 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 Data table.

Open Schoology (CMSD) and keep going

How to get there: open the CMSD website, click Clever, sign in with your Microsoft (district) account, then open Schoology from Clever.

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:

NIST Forensic Science
Explore

Optional 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
How this is graded
For: Data 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.
  • 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
    Turned in the right way (Schoology for routine work) and confirmed.
Submission Zone

Drop your Wed, Apr 28, 2027 · Forensic evidence table here. Use a clear file name (your initials + project). Routine work still goes to Schoology (via the CMSD portal).

Upload a project