John Hay
John Hay Biomedical
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Principles of Biomedical Technology (Principles of Biomedical Science)
Unit 1: Unit 1.1 Investigating the ScenePBS 1.1Biotechnology Research and Experiments

Document A Scene and Log Evidence

Record a scene with photos, labels, times, and an evidence log before anything is moved.

Builds on (2 levels back)inferred · high confidence
  • Observation vs. inference: Forensic work starts by separating what was seen from what is concluded.
  • Evidence identity: Labels, photos, and logs keep evidence tied to the right source.

Prerequisites are inferred: pending teacher review.

Re-learn the skill with worked practice and clear examples.

Record a scene with photos, labels, times, and an evidence log before anything is moved.

Step 1: Learn the key
Document a scene from [blank] view to close-up, label each item with an evidence [blank], and log the [blank] before moving it.
Scene Documentation instructional diagram
Step 2: Use the model
Read the figure, table, control, range, or protocol before choosing an answer.
Step 3: Name the limit
Say what the evidence can support and what it cannot prove yet.
Practice

A scene log says: Item A3, glass fragment, under desk, photo taken, collected 9:14 AM by Lee. What key information is included?

Reviewed
Scene Documentation instructional diagram
  1. A.Evidence ID, location, time, and collector
  2. B.Only the suspect name
  3. C.Only the weather
  4. D.No useful information
Show the worked solution ▾

Answer: A. Evidence ID, location, time, and collector

  1. Step 1: Read the entry: The log includes A3, location, time, and collector.
  2. Step 2: Match documentation needs: Those details make evidence traceable.

Why it's right: The entry includes the core documentation details.

Why the others miss:
  • B: No suspect is named.
  • C: Weather is not listed.
  • D: The entry is useful.

Aligned to Biotechnology Research and Experiments · reading level ~grade 9

Where you'd see this
  • In Unit 1.1 Investigating the Scene, this skill turns class evidence into a result another person can check.
Careers that use this
Forensic Science Technician: Uses document a scene and log evidence to make a decision from evidence without overclaiming.
Video library
Watch: Document A Scene and Log Evidence
Documenting the Crime Scene Part 1: Notes and Sketches
Professor Dave Explains
Guided notes

Fill these in as you work through the lesson.

Big idea: Record a scene with photos, labels, times, and an evidence log before anything is moved.
Key terms: write the meaning
  • Scene log (written record of evidence and actions):  
  • Scale ruler (shows object size in a photo):  
  • Evidence ID (unique label for an item):  
  • Timestamp (date and time recorded):  
The rule

Document a scene from   view to close-up, label each item with an evidence  , and log the   before moving it.

Check yourself
  1. Which photo shows the whole scene? 
  2. Why include a scale ruler? 
  3. What belongs in the evidence log? 
Work one example

A hair is found near a desk. Plan the wide, mid, and close photo plus one log entry.