Unit 2, Lesson 12
Using Graphs to Compare Relationships
Grade 7
Preparation
Lesson Narrative
In this lesson, students examine graphs that have multiple proportional relationships presented on the same set of axes. They compare and interpret the steepness of each graph in terms of the context. First, students use distance-versus-time graphs to decide which person from a group is going the fastest. Then, they work with graphs where the scale is not specified on each axis and realize that they can still use the structure of such graphs to compare rates (MP7).
- Create and interpret graphs that show two different proportional relationships on the same axes.
- Generalize (orally and in writing) that when two different proportional relationships are graphed on the same axes, the steeper line has the greater constant of proportionality.
Let’s graph more than one relationship on the same grid.
Required Materials
Activity 2
Required Preparation
Have available the information from the activity "Tyler's Walk" from the previous lesson.
For the digital version of the activity, acquire devices that can run the applet.
For the digital version of the activity, acquire devices that can run the applet.