Count a fixed fictional preference profile under plurality, a top-two runoff model and an instant-runoff model, stating the assumptions. Ages 12–16. Free complete lesson.

No party, candidate or political outcome is promoted.

Pupils use a short reading/reference sheet, two activities (Keep the same 100 voters; Change one assumption, then name the denominator) and an exit check. Teacher guidance and separate model answers support discussion and marking. Tasks accept evidence-based alternative answers where appropriate.

What’s included
11 pages per PDF edition. Four matching editions: colour A4, colour US Letter, black-and-white A4 and black-and-white US Letter. These are versions of the same teaching content. Eight editable PowerPoint slides with teacher notes; adaptable reading, questions and answers; file guide. Seven files in one ZIP.

HOW DID WE DO?

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