Education Technology

Addition and Subtraction of Rational Numbers: Part 1

Subject Area
Math: Middle Grades Math: The Number System
Level
6-8
Activity Time
45 Minutes
TI Calculator
TI-Nspire™ CX series
TI-Nspire™ CX CAS/CX II CAS
TI-Nspire™ Apps for iPad®
TI-Nspire Version
3.2
Resource Types
Lessons
Format
TNS

Addition and Subtraction of Rational Numbers: Part 1

Activity Overview

This lesson involves using pattern blocks to model addition and subtraction of positive mixed numbers for randomly generated numeric expressions.

Objectives

  • Students will use interactive models and pattern blocks to model positive mixed numbers and the sums and differences of positive mixed numbers.
  • 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 using pattern blocks to model addition and subtraction of positive mixed numbers for randomly generated numeric expressions.
As a result, students will:

  • Use pattern blocks to model addition and subtraction of positive mixed numbers.
  • Calculate sums and differences, and use the TI-Nspire to check the accuracy of their calculations.

Subject Area
Math: Middle Grades Math: The Number System
Level
6-8
Activity Time
45 Minutes
TI Calculator
TI-Nspire™ CX series
TI-Nspire™ CX CAS/CX II CAS
TI-Nspire™ Apps for iPad®
TI-Nspire Version
3.2
Resource Types
Lessons
Format
TNS
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