Success: Identify the two categorical variables and the observational unit in Card A.
- Notice · 3 min. Ask whether “morning” and “quiet” describe one or two visits when written on one record card. Let students hold a two-label mock card.
- Model · 5 min. Define bivariate data as paired values for two variables on each unit. Point to a hypothetical visit with session = morning and choice = quiet.
- Try · 6 min. Learners label Card A's variables, their categories and what the table counts. They state why “visit” need not mean “different person”.
- Compare · 5 min. Read the 12 cell aloud as “12 morning visits used a quiet table”. Contrast with the false reading “12 people always chose quiet”.
- Transfer · 4 min. Students invent two categorical variables for a fictional museum or sports club and name the unit to be counted; no personal survey.
- Exit · 2 min. Collect the variables and unit for Card A. If a learner says “number of people”, use repeat-visit cards tomorrow.