This study examined the changes that a group of nine Israeli 7th grade mathematics teachers, who collaborated on editing the textbook they used in class, chose to make in the textbook. Data sources included the project website (using a modified wiki-book platform), the group meetings, interviews with the teachers, individual papers written by the…

The aim of this study was to examine how teachers enact the same written algebra curriculum materials in different classes. The study addresses this issue by comparing the types of algebraic activity (Kieran, 2004) enacted in two 7th grade classes taught by the same teacher, using the same textbook. Data sources include lesson observations and an…

Investigates four seventh-grade teachers' awareness of students' tendency to conjoin or "finish" open expressions and teachers' ways of coping with this tendency. Concludes that two experienced teachers were aware of this tendency, whereas the novices were not, and teaching approaches related to this tendency differed considerably. Contains 24…