Lab Report Rubric: Osmosis in Potatoes Lab
Due Date: Monday, December 12, 2011
Your lab report must contain the following sections:
1. Title (2 points)
 The title should be a brief (short phrase) description of the lab.
 It should be centered and underlined.
 Below the title you should list your name and the date of the lab.
2. Purpose (3 points)
 What question(s) are you trying to answer?
3. Hypothesis (5 points)
 This should be an educated, testable prediction.
 It must be in the IF…THEN…BECAUSE format.
4. Procedure (10 points)
 Include a list of all materials used in the experiment.
 Write out the steps, in complete sentences, which explain what you did in the lab.
 Your procedure should be written so that anyone else could repeat the experiment.
4. Observations/Data (10 points)
 Include any data tables, observations, or additional notes you make during the lab.
 Graphs or tables may be done on a separate sheet.
 All tables, graphs and charts must be labeled appropriately.
5. Results (5 points)
 Write a summary of your data using complete sentences.
6. Conclusion (10 points)
 You must include a statement that accepts or rejects your hypothesis.
 Explain WHY you accepted or rejected the hypothesis.
 For this lab, you should also:
Explain why and how the potato pieces changed (or didn’t change.) For each type of water, was the
water moving into the potato cells or out of the cells? How can you tell? When you explain what
happened, try to use the terms osmosis, diffusion, cells, and concentration. Also, refer to the structure
of a plant cell (a potato is part of a plant, so it is made up of plant cells.) What role does the large
central vacuole in a plant cell play in what happened in the lab?
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List one thing you learned in this lab and describe how it applies to a real-life situation.
Include a list of possible variables or errors in the lab.
Your lab report must be typed. Use Arial, Calibri, or Times New Roman fonts and font size 12.
You must use correct spelling, grammar, and punctuation. (5 points)
TOTAL: 50 points
BONUS (2 points): What are the independent and dependent variables in this experiment?