This document appears to be notes from a mathematics lesson on identifying proportional and non-proportional relationships in tables. The lesson discusses using multiplication and division to determine whether earnings are proportional to hours worked. Students are asked to complete examples in pairs and determine if relationships shown in tables are proportional by seeing if one quantity can be multiplied by a constant to obtain the other quantity. The closure asks how students can use a table 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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