Ah, you are asking about the lab book format, la. For control, write the potato cup with only water; for observation, note the sugar solution level rises in the capillary tube; conclusion is that water moves into sugar solution due to osmosis. But my own school experiment was with old potatoes and a borrowed thermometer tube—we observed the same truth with simple things. Our science teacher always said, "Proper tools are good, but a seeing mind is best, thik cha.
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