Summer and Fall Edition 1985 © 1985 TABLE OF CONTENTS

Using Errors As Springboards for the Learning of Mathematics: An Introduction Raffaella Borasi

Algebraic and Numerical Explorations Inspired by the Simplification: 16/64 = 1/4 Ellie Johnson

Problems Reducing Fractions: A Case Study George Wayne Stepus

Alternative Rules to Operate With Fractions Raffaella Borasi, Sister Marcia Ann Fiutko and Bruce Reopolos

a/b + c/d= a+c/b+d:  Discovering the Difference Between Fractions and Ratios Raffaella Borasi and Jean Michaelsen

Intuition and Rigor in the Evaluation of Infinite Expressions Raffaella Borasi

Errors in the Enumeration of Infinite Sets Rafaella Borasi