Unit 13 Contents

15. Three pairs of students do a similar experiment. They mass a sandwich, then record the mass after one bite, two bites, and four bites have been eaten. Then they draw a best-fit line.
1. Tell what is the same and different for each graph.
2. For each pair, what does the graph say about the mass of each sandwich?
3. For each pair, what does the graph say about the size of the students' bites?

16. Romesh did this lab with an apple. He plotted his data in a graph. Tell a story about the graph.

Use the Graph Stories pages in the Student Activity Book for more practice reading point graphs.