Education Technology

Addition and Subtraction of Rational Numbers: Part 1

Published on 10/11/2012

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.