PBS Unit 1 · Case A · STATIC · Period 1-2

Investigation Notebook

The pages you keep for the STATIC investigation. Everything in green is yours to write.

Case
JH-26-0831-A
Date
Thursday, September 17, 2026
Pages
Entry 14 to Entry 19
Kept
In your notebook, all year
Graded
On completeness and honesty
Rule
Date every entry
Your charge today

A laboratory notebook is a dated record of what you actually did, written while you did it. It is the difference between a result and a claim. Yours will be read by someone who was not there.

You turn in
  • Six dated entries, one per mini lab plus the verdict.
  • Every heading printed here filled in with your own record.
  • One honest line per entry about what went wrong or what you are unsure of.

Time: Written during the block, not after it.

Green ruleYou write here. Nothing else on the page is yours to fill in.
Gold groundGiven to you. Do not re-derive it. Controls and reference values live here.
Grey groundInstructions from Mr. Mendoza. Read before you start the step.
Red groundSafety. Read it before you touch any material.
SEC 14Entry 14: Experimental design
Read this

Entry 14 records SEC 01. Head the page with the date, the case number JH-26-0831-A, and the entry number before you write anything else.

Entry 14 · you complete this

The independent variable in mini lab 1 was

The dependent variable was

One variable I had to hold the same was

Read this

Close the entry with one line: something that did not go the way you expected, or something you are still unsure of. An entry with nothing unsure in it is usually an entry written afterwards.

Honesty line · you complete this

What I am unsure of

SEC 15Entry 15: The print on the surface
Read this

Entry 15 records SEC 02. Head the page with the date, the case number JH-26-0831-A, and the entry number before you write anything else.

Entry 15 · you complete this

Which ridge pattern the scene print is

References I ruled out on the ridge pattern alone, and why

Minutiae agreement for each remaining reference

What this print proves, and what it does not

Read this

Close the entry with one line: something that did not go the way you expected, or something you are still unsure of. An entry with nothing unsure in it is usually an entry written afterwards.

Honesty line · you complete this

What I am unsure of

SEC 16Entry 16: Serial dilution
Read this

Entry 16 records SEC 03. Head the page with the date, the case number JH-26-0831-A, and the entry number before you write anything else.

Entry 16 · you complete this

C1 and C2 at the start

Drop counts, tubes 1 to 5

C1 and C2 at the end

My detection limit, and how I decided it

Anything that went wrong, and what I did about it

Read this

Close the entry with one line: something that did not go the way you expected, or something you are still unsure of. An entry with nothing unsure in it is usually an entry written afterwards.

Honesty line · you complete this

What I am unsure of

SEC 17Entry 17: The evidence gel
Read this

Entry 17 records SEC 04. Head the page with the date, the case number JH-26-0831-A, and the entry number before you write anything else.

Entry 17 · you complete this

Did both control lanes pass?

My standard curve, in words

Sizes I read for each scene band

Which references share a band with the scene, and what that does and does not mean

Read this

Close the entry with one line: something that did not go the way you expected, or something you are still unsure of. An entry with nothing unsure in it is usually an entry written afterwards.

Honesty line · you complete this

What I am unsure of

SEC 18Entry 18: Bloodstains and angle
Read this

Entry 18 records SEC 05. Head the page with the date, the case number JH-26-0831-A, and the entry number before you write anything else.

Entry 18 · you complete this

My three control checks

Ratios and angles for A, B, C, D

Height of origin, and what it says about whether the person was upright

What I could not determine

Read this

Close the entry with one line: something that did not go the way you expected, or something you are still unsure of. An entry with nothing unsure in it is usually an entry written afterwards.

Honesty line · you complete this

What I am unsure of

SEC 19Entry 19: Force and the verdict
Read this

Entry 19 records SEC 06 and 07. Head the page with the date, the case number JH-26-0831-A, and the entry number before you write anything else.

Entry 19 · you complete this

My energy calculation, written out

The injury range it landed in

My verdict in one sentence

The four exhibits I used and their types

The next test I would run, and what result would change my mind

Read this

Close the entry with one line: something that did not go the way you expected, or something you are still unsure of. An entry with nothing unsure in it is usually an entry written afterwards.

Honesty line · you complete this

What I am unsure of