Winter Edition 2008 © 2008 TABLE OF CONTENTS

Kindergarten and First Grader's Knowledge of the Number Symbols: Production and Recognition Nita Mark-Zigdon and Dina Tirosh

Teacher-developed Mathematics Performance Assessments in the Context of Reformed-based Professional Development Damon L. Baer and Richard R. Sudweeks

A Complex Systems Analysis of Practitioners' Discourse about Research Randall E. Groth

From an Operational to a Relational Conception of the Equal Sign: Third Graders' Developing Algebraic Thinking Marta Molina and Rebecca Ambrose