Number & Operations for Teachers 

    Copyright David & Cynthia Thomas, 2009

    

 

Chapter/Section

Chapter Four: Fraction Addition & Subtraction

4.1 Modeling the Meaning of Addition and Subtraction

Objective

Use concept models and alternative algorithms to understand fraction addition and subtraction.

Overview

                   Fraction Bar Model                                      Area Model

Readings

Modeling the Meaning of Addition and Subtraction

Homework

Exercises

Links

National Library of Virtual Manipulatives for Interactive Mathematics

  • Fractions - Visualizing
  • Fractions - Naming
  • Fraction Pieces
  • Fractions - Parts of a Whole
  • Fractions - Equivalent
  • Fractions - Comparing
  • Fractions - Adding

NCTM Illuminations