The Diagram and the Paragraph Disagree
A third-grade class is reading a short article about how beavers build dams. The article includes a paragraph saying beavers "pack mud and sticks into a river to slow the water." A simple diagram labels three parts: "sticks," "mud," and "pond behind dam." One student, Dani, reads the diagram label "pond behind dam" and writes in her notes, "Beavers build ponds first, then add a dam." The teacher also notices the diagram does not label the river at all. During a small-group lesson, Dani defends her note: "The picture shows the pond, so the pond must come first."
1. What is the source of Dani's misunderstanding, and how should the teacher use the paragraph and diagram together to correct it?
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Dani is treating a labeled diagram as a sequence, but the diagram shows parts, not order. The paragraph states the action: beavers pack mud and sticks into a river to slow the water, which creates the pond behind the dam. The teacher should ask Dani to match each diagram label to a word in the paragraph: sticks and mud appear in the text, and "pond behind dam" matches the slowed water the text describes. Then ask, Which came first according to the words - the dam or the pond? The text says slowing the water creates the pond, so the pond is a result. The diagram's missing river label is the reason the cause is invisible; the teacher can have students add a "river" arrow pointing into the dam.
2. Write one follow-up question that requires Dani to integrate the paragraph and the diagram rather than rely on either alone.
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Question: If you added arrows to the diagram to show what the paragraph says happens, where would the river arrow start and where would the pond appear? This forces integration. A correct response places the river flowing toward the dam made of sticks and mud, with the pond forming on the slowed side. Students must use the paragraph's action (packing mud and sticks into the river to slow water) to interpret the diagram's parts and fix the missing river. It cannot be answered by reading the diagram alone, because the diagram has no river label and no arrows, and it cannot be answered by the paragraph alone, because the spatial arrangement comes from the diagram.