Problems built around the structures students actually stumble on, in contexts worth thinking about. Every one comes with the answer, the solution path, and the wrong answer most of the class will produce.
GRADE 6
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1Pick a problem structure
Grouped by what makes the problem hard, not by topic. The structure is the thing students trip on — the context just decides whether they care.
2Your problem
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3Show the class
Full screen, large type, diagram included. Teacher notes stay hidden until you ask for them — press N or the button.
4Build a packet
Collect problems as you go, then print the set. A parallel pair adds two versions of the same situation — one asking a single question, one asking two — so a class can work at different entry points and still debrief together. The student version has working space and no answers; the teacher version adds the answer, the solution path and the likely error for each one.
5Save & share
The whole problem — wording, answer, notes, diagram — packs into one code.