This document contains notes from a math lesson on adding and subtracting rational numbers. It includes a do now problem set with two fraction operations, references homework of completing problems on pages 50-51 and 56 of a problem set, and an exam taking place on 9/22. The lesson materials cover using a number line model to add and subtract rational numbers, including non-integer numbers. Students are asked to consider challenges of the number line model and to analyze an example of representing 8 + (2.1) on a number line.

1. Module 2 Lesson 10 Adding and Subtrating Rational Numbers.notebook
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September 22, 2016
Module 2 Lesson 10:
Addition and Subtraction
of Rational Numbers
Homework:
1.) Lesson 10 Problem Set
All Page 56
2.) Exam Tuesday
9/22/16
Do Now
Complete the following fraction operations.
1.)
32
3 + 21
5 51
4 - 22
3
2.)

2. Module 2 Lesson 10 Adding and Subtrating Rational Numbers.notebook
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September 22, 2016
Lesson 9 Problem Set: Page 50

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Lesson 9 Problem Set: Page 51

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CLOSING:
• What challenges do you face when using the number line model to
add non-integer rational numbers?
• When using a number line to model 8 ( 2.1), how many units do
we move from 8 and in what direction? Where is the tail of the
arrow, and where is the head? What does your arrow represent?
_ _

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Lesson 10 Problem Set: Page 56

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