Author note — to cover

Classify quantitative data as discrete (counted, moving in steps) or continuous (measured, any value in a range), with shoe size the classic discrete trap despite fractional values. Classification and explain-why questions only; grouping continuous data into inequality classes lives on Grouped frequency tables. Both tiers. (S2, S4)

• Fluency — direct questions on discrete and continuous data, 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).