7th Grade Math Website

Lesson 4.2 - Constant Rates of Change

I can identify and represent proportional relationships as evidenced by completing problems.

Notes

Rate of change

Proportion

Proportional Relationship

Teacher models Example 1 p. 124

Your Turn p. 125 as a class

Proportional vs. Non-Proportional

Stop after first example

Extra Time

4-2 C page

Homework: 4-2 A/b # 1-2

Lesson 4.2 Day 2

Check HW 4-2 A/b # 1-2

Propportunity:

If I can drive 80 miles in two hours, what is my rate of change?

Explore activity p. 123

I can identify and represent proportional relationships as evidenced by completing problems with my group.

Writing Equations p. 125

Notes

Constant of proportionality

Constant

Variable

Remember:

k is your constant. You can create an equation by plugging k into the equation y=kx

What would your equation be for the table to the right?

Independent Practice p. 127-128 - As a class

Extra Time

4-2 C page

Homework: 4-2 A/b # 3-5

Lesson 4.2 Day 3

Check HW 4-2 A/b # 3-5

Propportunity:

I can identify and represent proportional relationships as evidenced by completing the independent practice.

Teacher models Example 2 p. 125

Your Turn as a class p. 126

Group Activities - GET COPIES FROM LAWLER - May need to modify

Performance Task p. 128

Extra Time

4-2 C page

Homework: 4-2 A/b # 6-7

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