Author note — to cover

Translate worded questions into either-or (add, exclusive events) or both-and (multiply, independent events), with mixed practice where the rule is never named and the condition must be checked. Both tiers. Exclude multi-stage problems needing a tree (Diagrams topic) and given-that wording (Higher conditional group). (P4, P8)

• Fluency — direct questions on choosing between adding and multiplying, limited to this lesson's stated scope (4 questions).
• Application — use the same skill in unfamiliar or contextual questions without introducing a later method (4 questions).
• Check — questions built around the exclusions and likely misconceptions named in the lesson brief (4 questions).