This document outlines a lesson on identifying proportional and non-proportional relationships in tables. It includes examples of pay rates that are proportional to hours worked when pay is calculated by multiplying hours by a constant rate of $8 per hour. Students work through examples in pairs and the lesson concludes by asking how tables can be used to determine if a relationship is proportional.

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Module 1 Lesson 3
Identifying Proportional and
Non Proportional Relationships
In Tables
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Homework:
Lesson 3 Problem
Set #1, 2, 3, 4, 5, 8
Do Now
Exit Ticket from Lesson 2

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If the hours change, does that mean the pay
MUST change?

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How did you determine the pay for hours?

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Describe the relationship between the amount
of money earned and the number of hours
worked in this example.

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Describe the relationship between the amount
of money earned and the number of hours
worked in this example.
The two quantities are in a proportional
relationship since time can be multiplied by the
same number to get the amount of pay.

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How can multiplication and division be used to
show the earnings are proportional to the number
of hours worked?

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How can multiplication and division be used to
show the earnings are proportional to the number
of hours worked?
Every measure of time (hours) can be multiplied
by the constant 8 to get each measure of pay.
Each measure of y (pay) can be divided by 8 to get
the corresponding x (hours).

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Yes, pay is proportional to hours because when hours are multiplied by 8, it
gives the corresponding pay amount.

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Get into pairs and complete Examples 1 ­4

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Closure
How can you use a table to determine
whether the relationship between two
quantities is proportional?

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