This activity draws on students’ understanding of graphs. The students may take a while to get used to these graphs because they don’t have units of measurement on the y axis. For example, the graph showing height doesn’t give the actual height of the aunties and uncles, it just gives their relative heights. So the higher up the y axis the ordered pair is, the taller the person. Acting out the problem may make it easier. The students can assume the characters of the aunties and uncles in the graphs (Ana, Loni, Pita, and Kuini).
The students can work systematically through the clues. A copymaster of the graph is at the end of these notes.

Answers to Activity

1. Aunty Kuini is the second tallest.
2. Answers will vary. They could include: Uncle Pita is the shortest. Aunty Kuini has the least children. Uncle Loni is the youngest.
3. Answers will vary.