Which Boundary?
Name the boundary, say what it builds, and then handle the three things everybody gets wrong. Two questions come before every answer: which way, and what crust.
Three rounds. Round 1 names the boundary. Round 2 asks what forms and what happens there. Round 3 is the traps.
Teacher Panel
Formative evidence, not a mark. Round 2 is the diagnostic: it is the only round where a learner has to separate the three kinds of convergence, and it is where convergent means trench shows up.
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