Double Bar Graphs and Many-to-One Correspondence

Warm-up

Show a completed double bar graph comparing two schools' favourite sports. Ask all three levels: Level 1: how many students at School A chose hockey? Level 2: how many more students at School B chose soccer than at School A? Level 3: which sport showed the biggest difference between the two schools? What might explain this difference?

Explore

Compare and create: each group receives two related data sets (e.g., monthly temperatures in two BC cities, or book loans by genre in two grade levels). They choose a scale, create a double bar graph, and write 3 comparison sentences (one at each level).

Consolidate

Practice

Students create one double bar graph from given data, choose scale, draw legend, and answer 5 questions at all three levels. Exit ticket: in a double bar graph with scale 1=10, one bar is 7.5 units. What value does it represent?

Exit ticket

Students create one double bar graph from given data, choose scale, draw legend, and answer 5 questions at all three levels. Exit ticket: in a double bar graph with scale 1=10, one bar is 7.5 units. What value does it represent?