Convert units
Target: Use a conversion rate in the correct direction.
Language target: Say whether the count of units gets larger or smaller.
Likely miss: Students divide when renaming a larger unit as smaller units.
Ask: Will the number of units get larger or smaller?
If you see it: Ask: will the number of units get larger or smaller? Let that decide the operation.
Evidence to listen for: The student multiplies to reach the smaller unit and can say why.
Next: If the direction flips, line up a double number line of the two units.
Observable student moves: names both quantities, uses the represented relationship, and revises after feedback. This companion is not a score.
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