Every term, students ask me whether they really need a paper lab notebook. Their typed notes look so much neater. Why can’t they just use a Google Doc?
Here’s the honest answer: a Google Doc is fine for organizing what you already learned. A bound paper notebook is for doing the learning in the first place. The two artifacts serve different cognitive functions, and the paper notebook is non-negotiable for one of them.
I’ve written about why in a longer essay (the Lab Notes series) and you don’t need to agree with me philosophically to benefit from the practice. The discipline works whether you find it meaningful or not. What follows is the operational version: how to buy the right notebook, how to set it up, what to write in it, and how to keep doing it when the novelty wears off in week three.
The notebook itself
Get a bound notebook with numbered pages. Spiral-bound is fine. Composition books are fine. Leather-bound “lab journals” from a science supply company are fine but unnecessary. What is not fine: anything with perforated tear-out pages, anything with looseleaf binders, and anything you’re going to be tempted to type into instead.
The bound, page-numbered constraint matters because the notebook is supposed to record events as they happened. A page you can tear out is a page you can rewrite. A loose sheet you can shuffle is a sheet you can revise after the fact. The whole epistemic value of a lab notebook is that it cannot be rewritten without leaving evidence. That constraint is the point.
A standard composition notebook (around $3) is enough for most A&P courses. If you want lined pages on one side and blank pages on the other — useful for sketches opposite text — the “dot grid” or “Cornell-style” notebooks at most office supply stores work well. Don’t spend more than $15.
Setting it up in week one
On the first page, write the following:
BIOL XXX · Anatomy & Physiology Laboratory Term: Fall 2026 Section: ___ Instructor: ___ TA: ___ Started: Aug 26, 2026 Owner: [your name] · [your email] Property of [your name]; if found, please return.
On the second page, leave a blank table of contents. Number the entries 1, 2, 3, 4... down the left side. As you fill each lab session, add an entry: “Sept 4 — Tissues lab 1, pp. 5–9.” The TOC takes 30 seconds per session and saves you hours later when you’re looking for a specific observation.
Put a strip of tape across the bottom edge of the front cover with your name and email visible. A&P notebooks get left at lab benches more than any other student item. The tape gets it back to you.
The seven habits that make the notebook actually work
These are the habits I look for when I review notebooks. They’re also the habits the notebook rubric in your course is graded against (see the rubric system if you’re curious about the formal scoring). More importantly, they’re the habits that make the notebook do real cognitive work for you, not just produce a passing grade.
Date and number every entry. In ink.
At the top of every new entry, write the date in a consistent format (I prefer Sep 4, 2026 — year included matters when you look at the notebook five years later). Below the date, write the lab session number or topic. In ink. Not pencil. Pencil can be erased; pencil is for sketches.
Pre-lab section. Before lab, not after.
The night before each lab session, open the notebook and write a short pre-lab section: what the lab is about, what materials and specimens you’ll use, what you expect to see. This is the “preview” step from the study-cycle template and it’s the single biggest predictor I’ve seen of which students leave lab on time vs which students stay late. Five minutes of pre-lab saves thirty minutes of confusion at the bench.
Record observations as they happen.
The notebook’s most important job is to capture what you saw when you saw it. Write measurements at the bench, not later from memory. Write observations as full sentences, not single words. “Stratified squamous epithelium, ~300 μm thick at the surface, fewer keratinized cells than expected” — not just “skin.” The fewer words you write, the less you’ll remember it later.
Keep observation distinct from interpretation.
“Pulse rate 88 bpm at rest, 142 bpm after two minutes of exercise” is observation. “Cardiac output increased to meet skeletal muscle oxygen demand” is interpretation. Both belong in the notebook. They belong on different lines, or in different paragraphs, with a label for each. Confusing the two is the most common reason students lose points on lab reports later. The discipline starts in the notebook.
Sketch with conventions, not artistry.
Sketches in a lab notebook are not art class. Single contour lines (no shading), labels with leader lines touching the structure (no arrows piercing through it), magnification noted, stain noted. A clear stick-figure-quality drawing with correct labels passes; a beautifully shaded drawing with wrong labels does not. The microscopy practice rubric has the full conventions if you want them.
Cross out errors with a single line. Don’t erase. Don’t white out.
You will write things wrong. That’s normal. When you do, draw a single line through the error so the original is still legible, then write the correction next to it (or below it). This is the single most important convention separating a real lab notebook from a school exercise. Erasing is a way of pretending the error didn’t happen. The notebook’s value is precisely that it shows what you thought, when, and how it changed.
End every session with a brief summary.
At the end of each lab session, write a 2–3 sentence summary at the bottom of the entry: what you did, what you saw, what surprised you. This takes about three minutes and is the moment when the day’s work consolidates from “activity” into “knowledge.” It’s also gold for studying later: when you come back to review for an exam, the summaries are the navigation track.
What a typical lab session looks like in the notebook
Here’s a sample two-page spread for a cardiovascular lab on the day of the sheep heart dissection. Yours won’t look exactly like this; the structure should be the same.
LEFT PAGE RIGHT PAGE
Sep 18, 2026 - Lab 4: Sheep Heart [Sketch 1]
External heart, anterior view
Pre-lab: Labels: aorta, pulmonary
- Goal: identify external + internal trunk, R/L atria, R/L
features of heart on sheep specimen ventricles, coronary
- Mat'ls: sheep heart, dissection vessels, apex
tray, scalpel, scissors, probe Drawn from observation
- Anticipate: differences from human at bench - ~1.2x
textbook diagrams (orientation,
size of pulmonary trunk) [Sketch 2]
Internal frontal section
Bench observations (8:42 am): Labels: 4 chambers, AV +
- External: aorta clearly larger than semilunar valves,
pulmonary trunk; coronary arteries chordae tendineae,
visible on anterior surface; right papillary muscles, IVS
ventricle wall noticeably thinner Drawn from observation
than left (palpation) at bench - ~1x
Cut sequence:
1. Single coronal cut, lateral to
medial, exposing all 4 chambers
2. Chordae tendineae intact in
both ventricles
3. Tricuspid + mitral valves visible
(3 cusps vs 2)
Internal observations:
- LV wall ~3x thicker than RV wall
(consistent with systemic pressure
generation)
- Papillary muscles present in both
ventricles
- Aortic semilunar valve preserved
during cut
Surprised by:
- Pulmonary trunk diameter much
closer to aorta than I expected
- Cardiac apex pointed inferior-left,
not straight inferior
Summary:
Successful sheep heart dissection.
4 chambers, all valves, great vessels
identified. LV wall thickness vs RV
matches the pressure differential we
discussed in lecture. Coronary
distribution matched textbook
right-dominant pattern.
Time at bench: 8:30 - 9:50 am
Notice what’s in there: pre-lab planning, observations with timestamps, a clear cut sequence, observations separated from interpretations, a moment of surprise captured, a brief summary. Notice what’s not: paragraphs of background information copied from the lab manual, exhaustive labels of every structure ever named, references to materials I didn’t actually use that day. The notebook records what happened, not what could have happened.
What to do when you fall behind
You will fall behind. Everyone does, at least once. When you miss a session or skip an entry:
- Don’t backfill from memory. Don’t write a fake entry dated last week. The whole notebook’s epistemic value collapses if any of it is reconstructed rather than recorded.
- Leave the missing day visibly missing. Skip a page or write “[no entry — missed session, retrieved make-up notes from M. Patel pp. 12–14]” in the spot it should have been. The notebook now records both what you did and what you didn’t do. Honest, traceable, recoverable.
- Resume the next session normally. Don’t try to write twice as much to make up for it. That’s the same as backfilling.
Why this matters beyond the grade
I’ve had students who became excellent nurses, physicians, researchers, and lab managers tell me, years later, that the lab notebook habit was the single most durable skill they took from A&P. Not the anatomy. Not the histology. The discipline of writing things down when they happen, in ink, in a way that can’t be rewritten later.
Clinical charting, research protocol documentation, patient assessment notes, equipment maintenance logs, regulatory compliance records — all of them are descendants of the bench notebook. The conventions are nearly identical. The professionalism the notebook teaches is a generalizable habit that transfers across every science-adjacent career you might build.
Start it well in week one. Hold it through the term. By the time you’re halfway through, the discipline will feel automatic, and you’ll wonder how anyone was supposed to learn this material without one.
Companion resources on this site
- How to study A&P (the science of learning, applied)
- Why a real lab notebook beats a Google Doc — the longer essay version of the philosophy behind this guide.
- Microscopy practice rubric — for the bench-drawing conventions in habit 5.
- Practical assessment rubric system — the formal R5 lab notebook rubric your course will likely grade against.
This is supplementary teaching material. Your specific course may have its own lab notebook requirements; if so, follow those. The seven habits above will exceed almost any course’s minimum and produce a notebook that serves you in any career you build downstream.