# Activities

• • • ##### Subject Area

• Math: Middle Grades Math: The Number System

• ##### Author 6-8

45 Minutes

• ##### Device
• TI-Nspire™ CX/CX II
• TI-Nspire™ CX CAS/CX II CAS
• TI-Nspire™ Navigator™
• TI-Nspire™ Apps for iPad®
• TI-Nspire™
• TI-Nspire™ CAS
• ##### Software

TI-Nspire™
TI-Nspire™ CAS

3.2

• ##### Report an Issue

Addition and Subtraction of Rational Numbers: Part 2

#### Activity Overview

This lesson involves representing addition and subtraction of signed mixed numbers on a number line for a randomly generated target sum or difference.

#### Objectives

• Students will represent signed mixed numbers and the results of the addition and subtraction of signed mixed numbers on a number line.
• Students will understand subtraction of mixed numbers as adding the additive inverse.

#### Vocabulary

• rational number
• equivalent fractions
• mixed numbers

#### About the Lesson

This lesson involves representing addition and subtraction of signed mixed numbers on a number line for a randomly generated target sum or difference.
As a result, students will:

• Represent addition and subtraction of signed mixed numbers on a number line.
• Calculate sums and differences, and use the TI-Nspire to check the accuracy of their calculations.