A useful Cornell note lets you cover the answer and still know what to attempt. The notes explain the material, the cues ask you to retrieve it, and the summary connects the main idea to its conditions. For science, those conditions matter: a neat arrow can still point the wrong way if you forget which substance can cross a membrane.
These Cornell notes examples follow one short biology source through a finished page, then use a second mechanism example to show how the questions change. You can download the completed example and a free blank template below. For the broader job of organizing lectures, diagrams, and lab evidence, use our guide to taking biology notes that explain systems.
Key takeaways
- Put the explanation and its conditions in the notes column; turn them into answerable questions in the cue column.
- Keep a source location beside the topic so you can check an uncertain detail.
- A science summary should connect a mechanism, a prediction, and the limits of that prediction.
- Use the finished example to understand the layout, then test yourself with the answers covered. Copying its appearance is only the first step.
Get the filled example and free template
No account is needed for these files:
- Open the filled Cornell notes example (PDF) — one A4 page, including all five cues, answers, and the summary.
- Open the blank Cornell notes template (PDF) — one page for printing and writing by hand.
- Download the copyable template (TXT) — open it in a text editor or copy it into your preferred document app.
Use your PDF viewer's download or print control. Select A4, or fit to printable area for US Letter. The blank PDF is a writing sheet, not a form with typing fields; use the TXT version for typing. The complete example is also transcribed below for small screens and screen readers.
What goes in each part of Cornell notes?
The Cornell Learning Strategies Center's original guide separates a wider note-taking area, a narrower cue column, and a summary at the bottom. Record the material first; add questions after you have enough context to choose useful ones. During review, cover the notes and answer from the cues.
For the examples here, the header names the topic and source, the notes preserve the explanation, the cues identify a task you can attempt, and the summary links the important ideas. The worksheet proportions are an editorial adaptation. Follow an instructor's required format when one is provided.
Example 1: Cornell notes for diffusion and osmosis
Source: OpenStax Biology 2e, section 5.2, Passive Transport, especially “Diffusion” and “Osmosis.” The passage, scenario, notes, and questions below were written by Thetawave Team as a teaching example on September 11, 2026. They are not a student's submission or a record of a laboratory experiment.
Start with a short piece of material
Here is our condensed explanation of the source ideas, followed by an invented setup to reason about:
In diffusion, particles continue moving randomly, while the overall transfer of a substance follows its concentration gradient where passage is possible. A membrane may allow some substances through and block others. Osmosis concerns water crossing such a membrane. For a simple comparison with equal starting pressure, water moves net toward the side with the higher concentration of a solute that cannot cross. A developing pressure difference can oppose that movement.
Our setup: Compartments A and B begin with equal solution volumes, temperature, and pressure. A contains 0.10 mol/L glucose solution and B contains 0.30 mol/L glucose solution. The membrane allows water through but blocks glucose. Predict the initial net movement of water. Do not calculate a final volume or elapsed time from these facts alone.
Turn the material into short notes
First, choose what an answer must retain. In this setup, “water can cross,” “glucose cannot,” and “initial” belong in the note. If you remove any of them, the question changes.
Then compress the explanation into a decision: compare the glucose concentrations only after identifying the membrane rule; the initial net water movement is A to B. Keep the two concentrations as evidence for that prediction. You do not need to copy the whole paragraph into the right-hand column.
Finally, separate the prediction from its limits. “A to B initially” is supported; an exact time or final water level is not. A short note should make that boundary visible rather than hiding it in a long paragraph.
The completed Cornell page
Header: Passive transport. Source: OpenStax Biology 2e, section 5.2. Main question: Which substance moves, in which direction, and why?
The five cue-and-answer pairs on the sheet are:
- Cue: What can cross this membrane? Notes: Water can cross; glucose cannot. Start with equal solution volumes, temperature, and pressure.
- Cue: Where is the initial net water movement? Notes: A contains 0.10 mol/L glucose; B contains 0.30 mol/L glucose. Initial net water movement: A to B.
- Cue: Why does glucose not move from B to A? Notes: The membrane blocks glucose. A concentration difference does not guarantee passage.
- Cue: What does net movement mean? Notes: Water molecules move both ways. Initially, more water crosses from A to B than from B to A.
- Cue: What can I not conclude? Notes: No exact rate or final volumes follow from this setup. Pressure and membrane properties matter.
Summary: Identify the substance and membrane conditions before drawing a transport arrow. In this simplified setup, water initially moves net from A to B while glucose stays on its own side. The direction alone does not predict the final volumes.
Notice what the summary adds: it connects the membrane rule → the prediction → the limit. A summary that says only “Today I learned about diffusion and osmosis” names the topic but does not recover the reasoning.
Turn a weak cue into a question you can check
Weak cue: “Osmosis.” This can remind you of a topic, but it does not tell you whether to define a word, label a diagram, or predict a change.
Better cue: “With water able to cross and glucose blocked, which way does water initially move between A and B?” You now have a specific task and a source-backed answer. If the concentrations are not visible beside the question during review, include them in the cue or restate the setup first.
A separate follow-up: “What information would I need before predicting the final volumes?” This tests the boundary instead of making the first question carry two different jobs.
Try answering before you uncover the notes. If your answer was “water moves from high to low concentration,” ask high concentration of what? That wording is too ambiguous to mark correct here. Name water or glucose, name the compartments, and retain the membrane condition.
Example 2: A mechanism cue for facilitated diffusion
A second science note can use the same layout while testing a different decision. The first example predicts direction; this one asks whether a transport protein necessarily means energy is being supplied.
The “Facilitated transport” section of the same OpenStax chapter describes passive movement with membrane-protein assistance. Here is a compact editorial example:
Header: Membrane transport. Source: Biology 2e, 5.2, “Facilitated transport,” with the electrochemical-gradient distinction in 5.3.
- Cue: Does using a transport protein automatically make transport active? Notes: No. Facilitated diffusion uses a channel or carrier while the substance moves down its relevant gradient, without a cellular-energy input driving that transport.
- Cue: What should I inspect besides the protein? Notes: The substance, the direction relative to its gradient, and whether energy drives the movement. For ions, electrical conditions also matter; do not infer their direction from concentration alone.
- Cue: What statement needs correcting? Notes: “All protein-assisted transport uses ATP.” Protein assistance alone does not establish an ATP requirement.
Summary: A membrane protein identifies a route, not automatically an energy source. Classify the mechanism using the movement and its driving conditions.
This note needs an explanation, not just a definition card. If your course asks for a diagram, add the membrane, transported substance, labeled direction, and relevant conditions in the notes area. If it asks you to solve a quantitative problem, include the worked calculation and units as well; a Cornell page does not replace solving a fresh problem.
Use the notes for three short checks
Cover the finished example before answering. These are original practice questions, not exam questions or evidence of learning gains.
1. Keep the original setup. Which way is the initial net water movement, and which substance remains blocked?
Answer: Water moves net from A to B initially. Glucose remains blocked by the membrane. “Glucose moves from B to A because it is more concentrated there” ignores the permeability condition.
2. Swap the glucose concentrations: A is now 0.30 mol/L and B is 0.10 mol/L. Keep all the other starting conditions. What changes?
Answer: The initial net water movement reverses to B to A. The membrane still blocks glucose. Changing the concentrations changes the prediction; it does not change which substance can cross.
3. A note says: “A carrier protein is involved, so ATP must be used.” Is that enough information?
Answer: No. Facilitated diffusion also uses transport proteins. Check the transport mechanism and its driving conditions before asserting an energy requirement.
When you miss an answer, record the specific correction beside the affected cue, then try a question with the answer covered again. For review across later sessions, our explanation of active recall and spaced repetition separates what you practice from when you return to it.
Copy the layout for your next source
The plain-text Cornell template keeps each cue next to its answer in a linear format that works on phones. In a document editor, you can place the cues in a narrow left column and the notes in a wider right column, with the summary underneath.
You can also copy this starter directly:
Topic: Date: Source / page / slide / timestamp: Main question: Cue / question: Notes / answer / conditions: Cue / question: Notes / answer / conditions: Summary: After self-testing: Cue I missed: Correction and source: Question to retry:
Choose one manageable source section. Write the explanation first, add cues that match what you need to do in the course, and write a summary in your own words. If a relationship is unclear, return to the source or ask your instructor before treating it as something to memorize.
For lengthy diagrams or derivations, let the working extend onto another page and keep the source reference and cue on the Cornell sheet. The page is an organizing aid; filling every box is not the goal.
Where Thetawave can help with the source material
If your starting point is a long course PDF, Thetawave's PDF-to-notes workflow can help create an initial structured note. Check it against the assigned source, especially diagram labels, qualifiers, and symbols. Then use the blank sheet here to turn the checked explanation into your own cue questions and summary.
For a photographed page, the image-to-study-notes workflow explains the source-checking step. You can also turn selected, verified questions into flashcards. Keep the full mechanism beside the small recall questions so a short answer does not erase its conditions.
The examples and files in this article were prepared editorially, not generated in a Thetawave product test. They demonstrate a study layout; they do not establish that any app produces this exact Cornell format automatically or that using it guarantees a higher grade.
Sources and scope: Cornell's Learning Strategies Center provides the method reference. Science facts were checked against Mary Ann Clark, Matthew Douglas, and Jung Choi, Biology 2e, OpenStax, sections 5.2 and 5.3. Scenario values, wording, questions, page layout, and teaching image are original to Thetawave Team. The osmosis example predicts an initial direction under stated conditions, not the behavior of every living cell or a clinical outcome.