### Standards & Objectives

Essential and guiding questions:

Part A:

• How do you decide whether two quantities form a proportional relationship?
• How do you identify the constant of proportionality in a table of values?

PART B:

• Why did you make x = Number of Students Selling Books and y = Number of Coupon Books Sold in the equation or graph?
• How would switching the labels for the x and y axes change the graph?

PART C:

• Why did some of you create an equation where you multiplied by 3?
• Why did we get the same answer when some of you multiplied by 3 and others divided by 3?

Blooms taxonomy level:
Understanding
Differentiation suggestions:

If students can’t get started….
Assessing:

• Can you explain your work?
• How do you compute the unit rate between two quantities?
• What is the unit rate for this task?

• How many coupon books would 21 students have sold?
Extension suggestions:

If students finish early….
Assessing:

• How can you use the equation/reasoning you used to derive you answer in part B to verify each line in the table?
• Why did you choose to represent the data with a graph (or table)?
• How could you use your graph or equation to answer part c.