Walk the Scene
This page has four parts, in the order you use them. Part 1 is what you need to know. Part 2 says what to do, in plain English. Part 3 shows the work done once on a case that is not yours. Part 4 is your own work and where to turn it in.
Open your materials, follow the steps, then turn in your work.
Make a scaled practice sketch, evaluate five photo frames and complete your D05 evidence sheet.
Case background, evidence, and file details▸
How today connects to the case
Where: Respawn, an e-sports lounge with a smoothie counter. Who: Dana Okafor, 29, owner of the Respawn e-sports lounge, found behind the smoothie counter before opening by the morning shift lead. Dana had a severe peanut allergy that every employee knew about.
The scene in our room is the scene in the case: tape at the door, the outline and torso behind the counter, the lower body beneath a toppled supply shelf and a rubber floor mat. Responders left the scene as found, pending investigation.
Your job: By Day 18 your team names the manner and cause of death and backs each one with at least four exhibits across three different evidence types. Every claim stops where the evidence stops.
Make a scaled practice sketch, evaluate five labeled photo frames and complete the whole D05 evidence sheet.
Remember: Record what is supplied. Mark what is missing. Keep practice separate from case facts.
- Activity 1.1.1 A Sketchy Scene
This John Hay case practices skills connected to the PLTW activity above. Follow today's directions for the assigned work.
Missed class? Open today's worksheet and briefing. Use simulated data only if the worksheet or Mr. Mendoza provides it, and label it "Simulated data." If a required measurement or file is missing, ask Mr. Mendoza. Do not invent results.
Evidence released today
- Exhibit 004 · Scene, wide shot: behind the smoothie counter · Scene thread
Exhibit means one numbered piece of evidence. Thread means the team lane it belongs to (Scene, Trace, Serology and DNA, Toxicology, Medical Examiner, Records). Exhibits are handed out on paper in class on the day they are released, and the same files are attached to that day's Schoology assignment.
Notebook reminders
- Investigation Day 5 pack (paper in class; the PDF is above and on the Schoology assignment)
- Investigative Notebook: PLAN-1 sketch belongs in your D05 packet once
- Investigative Notebook: Observation vs inference Venn
- Investigative Notebook: Day 5 Cornell page
One completed D05 packet: evidence sheet, PLAN-1 sketch and four measurements, five photo-log rows and five judgments.
Hand in one paper D05 packet or submit one PDF to PBS6782 Walk the Scene. Include the whole evidence sheet and the completed sketch, measurement, photo-log and judgment pages once. Notebook pages stay in your notebook. Check Schoology for the deadline.
Schoology assignment: Wk3 D05 · Walk the Scene (PLTW 1.1.1)
What the evidence can and cannot prove
- Classroom evidence supports a classroom finding. It cannot convict a real person or diagnose a real patient.
- A hair consistent with a person proves a hair like theirs was present, not that the person was, and never when.
- A fingerprint proves touch, not when or why. A pattern class narrows a crowd; only minutiae can name one finger.
- A presumptive test says maybe. Only a confirmatory test says blood, and only DNA says whose.
- One value outside its reference range is a flag, not a verdict.
Make only the claims your evidence supports. Explain what you still cannot tell.
Part 1 of 4 · Background and definitions▸
💡 Big idea: Record what is supplied. Mark what is missing. Keep practice separate from case facts.
- • A scale connects a paper length to the training-area length.
- • Two distances need fixed reference points, their separation and the correct side of the baseline.
- • A digital crop changes the frame, not the camera position or the objects.
- • A photo may show appearance without supplying a numerical size or substance identity.
A record is usable evidence when the source stays beside each statement and every added inference is labeled, because a second reader can then check what was stated against what was added.
Record what is supplied. Mark what is missing. Keep practice separate from case facts.
Driving question: How can someone check your measurements and photo judgments?
What you already know: Your earlier log separated what a source states from what you infer. Apply that habit to the plan and photo frames.
New idea: Record what is supplied. Mark what is missing. Keep practice separate from case facts.
Visual or model: F1. Original scale model, not case evidence. At 1:20, divide a training length by 20 to get its paper length. Use PLAN-1 for the complete layout. What to notice: Keep the units; use both reference points.
- Read the source label before using a number or image.
- Use the given scale, reference points and units to make the practice sketch.
- Record visible features; mark missing information rather than guessing.
- Check the whole D05 packet and submit it once.
Real biomedical example: A clear record names the source, units and limits so another reader can check it. Source: Documentation Practice: original PLAN-1 and five labeled photo frames.
What the evidence supports: The supplement supplies the complete practice plan, text table, five frames and writing rows. Your own case pack supplies C1's source image.
What it cannot prove: PLAN-1 is an original mathematical simulation, not your case scene. Shared illustrations add no case facts. Today's records cannot name a , or responsible person.
- • Scale: How a length on paper represents a length in the training area.
- • Reference point: A named fixed starting location for a measurement.
- • Coordinate: A pair of numbers locating a point. PLAN-1 gives east, then north, from RP1.
- • Frame: The part of an image that is shown.
- • Crop: A smaller displayed part of the same image, not a new photograph.
- • Observation: What you can see or what a named source states.
- • Inference: An explanation you add, labeled separately from the observation.
Use it now: At 1:20, explain why the supplied 100 cm model becomes 5 cm on paper. Then check B3's own given length. This is thinking practice for the one turn-in named under Turn in, not a second submission.
Go further, optional: Optional: compare PHOTO-3 with PHOTO-5 and explain what the wider frame adds without claiming an unreadable numerical size.
Original training rectangle: 200 cm by 160 cm. RP1=(0,0); RP2=(200,0). All four points are north of the baseline. The supplement gives coordinates and both distances.
Limit: These are supplied mathematical simulation values, not measurements of the case scene.
Your section's full scene and a labeled crop, a shared mark crop, a backpack illustration and the full scale illustration. Read the purpose beside each.
Limit: Crops do not establish new photo history. Unreadable scales cannot establish exact size.
For C1 use only Case B's own scene image and records. Record observations separately from inferences and keep the case's stated limits.
Limit: PLAN-1 is an original mathematical simulation, not your case scene. Shared illustrations add no case facts. Today's records cannot name a , or responsible person.
Today's decision · Simulated classroom evidence scenario
Your role: student checking a documentation record
Decision: A partner wants to add a size and camera direction that are not supplied. Decide how to complete the existing photo log.
- • Leave every photo row blank until a photographer provides a full history.
- • Record visible features and mark the size and direction as not supplied.
- • Estimate the size from how large the image looks on your screen.
Response: Use the discussion to check B2 and the photo log in your one D05 packet. Do not submit a separate choice response. Use it inside the one turn-in named under Turn in; it is not a separate submission.
Claim ceiling: PLAN-1 is an original mathematical simulation, not your case scene. Shared illustrations add no case facts. Today's records cannot name a , or responsible person.
Reason for review: Case B's released scene is the source for C1. The separate PLAN-1 supplies only the measurement exercise.
Context: Original fictional classroom case and separately labeled mathematical practice, not a real investigation.
- • Earlier lesson: record the source and an open case question.
- • Today: document the supplied plan and frames; keep the case observation separate.
- • Read only your section's released scene for C1.
- • A shared illustration does not add a finding to either case.
- • PLAN-1 supplies only the measurement exercise.
Measurements: PLAN-1 supplies explicitly simulated values. No case-scene dimensions are inferred from an image.
Figure finding: Record visible features and stated source information without treating an inference as a finding.
Uncertainty: PLAN-1 is an original mathematical simulation, not your case scene. Shared illustrations add no case facts. Today's records cannot name a , or responsible person.
Students often think a photo proves an exact size or identifies a substance by color. The trap: a frame may show appearance while leaving size, identity and history unproven
- 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.
Part 2 of 4 · Directions in plain English▸
2.1 Open your materials
2.2 Start the work
Open your D05 pack, evidence sheet and Documentation Practice supplement. Read the briefing and Part A. This is paper-scene practice; do not stage, touch or collect case materials.
Show all 5 required steps
- Open your D05 pack, evidence sheet and Documentation Practice supplement. Read the briefing and Part A. This is paper-scene practice; do not stage, touch or collect case materials.
- Use PLAN-1 to place P1 to P4 on the blank sketch. Copy the supplied RP1 and RP2 distances into your record to plot and check it. These are simulated values, not measurements you collected. Show north, scale and units; write See PLAN-1 page in B1.
- Read PHOTO-1 to PHOTO-5. Complete five log rows and five judgments for each stated purpose. Write not visible or not supplied when needed. For B2, explain the most debated or hardest frame.
- Complete B3 and Parts C, D and E on the evidence sheet. For C1, use only your section's case image and records. Keep the listed notebook work in your notebook.
- Check the whole D05 packet. Hand in paper or submit one PDF through your section's Walk the Scene assignment. Include each completed supplement page once.
Lost your place? Find the first unfinished item: Part A, PLAN-1/B1, photo log/B2, B3, C, D or E. Open that page and continue without copying a completed part again.
- 0-10 minRead the D05 briefing and begin Part A; revisit the open case question
- 10-20 minModel the scale and fixed reference points; open PLAN-1
- 20-40 minDraw and label the sketch; complete four measurement rows and B3
- 40-55 minRecord and judge all five photo frames; explain one choice for B2
- 55-70 minUse your own case image for C1; finish A, C, D and E and notebook work
- 70-80 minCheck the complete packet; submit paper or one PDF and keep the notebook
- • Today you complete one D05 packet using a supplied paper scene and five labeled photo frames.
- • I will show the scale method. You will check the coordinates and record both distances for each point.
- • We will judge what each frame can show for its stated purpose. Missing information stays marked as missing.
- • The practice plan is separate from your case. Return to your own case image for C1.
PLTW connection and today's work
This original John Hay practice supports measurement and documentation skills connected to PLTW Activity 1.1.1, A Sketchy Scene. Official PLTW work remains separate.
Today's stopping point: Finish this D05 packet. This does not record completion of a separate official PLTW activity.
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.
Use the turn-in directions in Part 4 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
Finish the assigned lab safely before starting extra practice.
Part 3 of 4 · Worked example▸
This is a parallel case, not your own. Read it for the order of the work, then do your own in Part 4.
At a scale of 1 cm on paper for 20 cm in the training area, a supplied 100 cm length becomes 100 cm divided by 20 = 5 cm on paper. Keep the units. This one length does not locate a point: PLAN-1 also supplies two reference points, their separation and the side of the baseline.
| Training length | Scale | Paper length |
|---|---|---|
| 100 cm | 1 cm : 20 cm | 5 cm |
This model shows the level of evidence and organization needed to complete: Original practice for measurement and documentation, separate from official PLTW completion.
- Open your D05 pack, evidence sheet and Documentation Practice supplement. Read the briefing and Part A. This is paper-scene practice; do not stage, touch or collect case materials.
- Use PLAN-1 to place P1 to P4 on the blank sketch. Copy the supplied RP1 and RP2 distances into your record to plot and check it. These are simulated values, not measurements you collected. Show north, scale and units; write See PLAN-1 page in B1.
- Read PHOTO-1 to PHOTO-5. Complete five log rows and five judgments for each stated purpose. Write not visible or not supplied when needed. For B2, explain the most debated or hardest frame.
- Complete B3 and Parts C, D and E on the evidence sheet. For C1, use only your section's case image and records. Keep the listed notebook work in your notebook.
- Check the whole D05 packet. Hand in paper or submit one PDF through your section's Walk the Scene assignment. Include each completed supplement page once.
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: One completed D05 packet: evidence sheet, PLAN-1 sketch and four measurements, five photo-log rows and five judgments.
Part 4 of 4 · Your work▸
Check your work before submitting
- My sketch identifies both reference points, north, scale and all four points with two distances each.
- My five photo records name visible features and missing information without inventing a photo history.
- My five judgments give a reason and an improvement or limit for each stated purpose.
- The whole D05 sheet is complete, including B3 and A, C, D and E. Practice values stay out of case claims.
Before lab work: read the safety rules
- This is paper-scene practice. Do not collect, handle or stage biological or case materials. Follow the existing safety requirements before any later hands-on lab.
4.1 Turn in your work
DueCheck the Schoology assignment for this day- Hand in
- One completed D05 packet: evidence sheet, PLAN-1 sketch and four measurements, five photo-log rows and five judgments.
How to submit and name your file
Hand in one paper D05 packet or submit one PDF to PBS6782 Walk the Scene. Include the whole evidence sheet and the completed sketch, measurement, photo-log and judgment pages once. Notebook pages stay in your notebook. Check Schoology for the deadline.
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 helpYou get two school days for every day you were absent, so this deadline moves with you.
Find this lesson's Schoology assignments
These are existing assignments for your section. Follow the directions in the assignment you are working on; this list does not add new work. A PLTW Work row repeats on every day of its lesson; submit it once. Check Schoology for each deadline.
- Wk3 D05 · Walk the Scene (PLTW 1.1.1)(today's case-day record)
- Wk3 Lab: Documentation custody(the lab record)
Link will not open? Open Schoology, choose your course and section, and find the title shown above.
How I will check this work
- My sketch identifies both reference points, north, scale and all four points with two distances each.
- My five photo records name visible features and missing information without inventing a photo history.
- My five judgments give a reason and an improvement or limit for each stated purpose.
- The whole D05 sheet is complete, including B3 and A, C, D and E. Practice values stay out of case claims.
PLAN-1 is an original mathematical simulation, not your case scene. Shared illustrations add no case facts. Today's records cannot name a cause of death, manner of death or responsible person. Use the Schoology assignment linked above to submit it.
How this lesson connects
Clear claims → honest graphs → careful evidence records → a case investigation. Use evidence to explain what you know and what you still need to find out.
Practice: try a question, then check your answer▸
Claim ceiling for this check: PLAN-1 is an original mathematical simulation, not your case scene. Shared illustrations add no case facts. Today's records cannot name a , or responsible person.
Does a digital crop prove that the photographer moved closer?
Write an answer and pick a confidence to unlock the key.
Missed class or ready for more?▸
Before any later hands-on scene lab, review the documentation sequence and required safety rules. Today uses only the paper scene and supplied images.
Finish the checklist before you handle any material.
- • This is paper-scene practice. Do not collect, handle or stage biological or case materials. Follow the existing safety requirements before any later hands-on lab.
- 1Open your D05 pack, evidence sheet and Documentation Practice supplement. Read the briefing and Part A. This is paper-scene practice; do not stage, touch or collect case materials.
- 2Use PLAN-1 to place P1 to P4 on the blank sketch. Copy the supplied RP1 and RP2 distances into your record to plot and check it. These are simulated values, not measurements you collected. Show north, scale and units; write See PLAN-1 page in B1.
- 3Read PHOTO-1 to PHOTO-5. Complete five log rows and five judgments for each stated purpose. Write not visible or not supplied when needed. For B2, explain the most debated or hardest frame.
- 4Complete B3 and Parts C, D and E on the evidence sheet. For C1, use only your section's case image and records. Keep the listed notebook work in your notebook.
- 5Check the whole D05 packet. Hand in paper or submit one PDF through your section's Walk the Scene assignment. Include each completed supplement page once.
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.
Complete the same D05 packet using the supplied plan, images and your case records. No partner, scene staging or camera is needed. Draw a 10 cm by 8 cm frame if you cannot print at actual size.
Documentation Practice and writing rowsHand in one paper D05 packet or submit one PDF to PBS6782 Walk the Scene. Include the whole evidence sheet and the completed sketch, measurement, photo-log and judgment pages once. Notebook pages stay in your notebook. Check Schoology for the deadline.
Class still runs. Complete today's work as this page describes (it is self-guided). Need the concept taught without a teacher? Use this authoritative explainer:
Documentation Practice: plan, frames and helpSources: slides, readings, and resources▸
Use the deck and optional guided notes to check the same D05 packet. No separate exit ticket or additional submission is due.
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