This document contains notes from a math lesson on solving equations. It provides examples of how to write equations from word problems using tape diagrams and solve for unknown values. The homework assignments are to complete problems 6, 7, and 11 from Lesson 8 and answer question 1 on the Lesson 7 exit ticket. There will be a mid-module exam on Friday, January 15th.

1. Module 3 Lesson 8.notebook
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January 07, 2016
AIM:
Solving
Equations
1/7/16Module 3, Lesson 8
HW: Lesson 8 Problem Set
#6, 7, 11
Do Now:
Exit Ticket For Lesson 7 #1
Mid Module 3 Exam
Friday 1/15/16

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Homework Answers
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Homework Answers
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5. Module 3 Lesson 8.notebook
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Homework Answers S.41

6. Module 3 Lesson 8.notebook
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Julia, Keller and Israel are volunteer firefighters. On Saturday the volunteer fire
department held its annual coin drop fundraiser at a streetlight. After one hour,
Keller had collected $42.50 more than Julia, and Israel had collected $15 less than
Keller. Altogether, the three firefighters collected $125.95. How much did each
person collect?
Find the solution using a tape diagram.
What were the operations we used to get our answer?
Julia
Keller
Israel
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7. Module 3 Lesson 8.notebook
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The amount of money Julia collected is j dollars. Write an expression to represent the amount
of money Keller collected in dollars.
Using the expressions for Julia and Keller, write an expression to represent the amount of
money Israel collected in dollars.
Using the expression written above, write an equation in terms of j that can be used to
find the amount each person collected.
Solve the equation written above to determine the amount of money each person
collected and describe any if-then move used.
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8. Module 3 Lesson 8.notebook
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Discussion:
How does the tape diagram translate into
the initial equation?

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Example 2
You are designing a rectangular pet pen for you new baby puppy. You have 30 feet of fence
barrier. On a whim, you decide that you would like the length to be feet longer than the
width.
Draw and label a diagram to represent the pet pen. Write an expression to represent the width
and length of the pet pen.
Find the dimensions of the pet pen.
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11. Module 3 Lesson 8.notebook
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Additional Example:
1.) Find two consecutive even integers that
have a sum of 74.
a.) Create a tape diagram to model the situation.
b.) Wrtie and solve an equation.

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15. Module 3 Lesson 8.notebook
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Closing:
How do you create an equation from a
word problem?

16. Module 3 Lesson 8.notebook
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