Two Meanings of 'Seal' at the Tide Pools
On a tide-pool walk, Ms. Reyes hands her reading group this paragraph: 'The shallow pools near the sand dry out by noon, so the snails there must seal themselves against the dry air. Deeper pools stay cool, and the anemones in them open their tentacles all afternoon. On the day we visited, the wind was strong, and the spray made the rocks slick.' Two students disagree about the word seal. Marcus says it means 'a sea animal with flippers.' Priya says it means 'to close tightly.' Ms. Reyes will not give the definition. She asks the group to argue from the paragraph itself - from the words around seal and the job the word is doing in the sentence - and then to use the same method on slick, which nobody has defined.
1. Settle the disagreement about seal using evidence from the sentence, not from what seal usually means.
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Priya is right: seal means 'to close tightly.'
Three pieces of evidence, all inside the sentence:
- The word before it. 'Must seal' - must is followed by an action, not by a thing. You cannot say the snails must sea-animal.
- The word after it. 'Seal themselves' - seal takes an object. A noun cannot take themselves as an object here; the sentence tells us who is being sealed in.
- The reason given. The pool 'dries out by noon,' so the snails are protecting themselves 'against the dry air.' Closing off is exactly what protects a snail from drying.
Marcus matched the word to a familiar meaning and stopped. The question asks what the word is doing in this sentence, and the sentence has already answered it.
2. Marcus's meaning is a real dictionary meaning of seal. Explain why that does not make his answer acceptable here.
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Because the question is about the word in this sentence, not the word in a dictionary.
Many common words carry several meanings - seal (animal), seal (close), seal (an official stamp). A dictionary lists all of them; a sentence uses one. The reader's job is to work out which, using the sentence's own signals: the word's position (does an action-word slot or a thing-word slot need filling?), the words attached to it (themselves, against, must), and the logic of the surrounding ideas (drying out).
Marcus's answer fails on the position test alone. If a classmate wrote 'the snails must sea animal themselves,' everyone would hear the error immediately. The lesson generalizes: a true fact can still be a wrong answer, and confident recall is not evidence. Evidence is what the sentence shows.
3. Use the same method on slick. Give a meaning and the evidence for it.
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Slick means 'wet and slippery' here.
Evidence: the sentence names the cause - 'the spray' - and spray is water thrown off the waves. It names the thing affected - 'the rocks.' It says the effect was 'made,' so slick describes a condition the water created on the rocks, not a permanent quality of them. The mention of strong wind explains why spray was flying at all.
A competing meaning, 'clever or sly,' fails the same position test Marcus failed: 'made the rocks clever' is nonsense, because slick there would describe a person's mind, not a rock's surface. Two meanings, one slot, and only one fits - which is the whole method: read past the familiar definition to the words that surround the word.