Author note — to cover

Inclusive classification: every square is a rectangle and a rhombus, every rhombus a parallelogram, with always-sometimes-never questions and the most specific name the facts force. Use the hierarchy to decide which properties transfer downwards. Builds on the definitions and diagonals sibling pages. Both tiers. (G4)

• Fluency — direct questions on classifying quadrilaterals, 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).