Adopting new instructional materials is an important way to support reform in science education, but implementation can be challenging and complex. Therefore, we conducted a contrasting case study of two middle schools implementing new curricular materials. We conducted semi-structured interviews with teachers and leaders and collected…

This study aims to measure science teachers' perception about their students' practices in science class, and to measure their model of inquiry teaching. The sample consisted of 127 middle school science teachers in Riyadh, Saudi Arabia, 65 males and 62 females, in the school year 2016/2017, and utilized a questionnaire with two parts, 11 items…

In this paper we focus on variation of the design and the implementation of a specific task during three mathematics lessons in the 8th grade in a learning study (Marton & Tsui, 2004; Runesson, 2008). The theme of the lesson was division, with a denominator between 0 and 1. The teachers wanted their students to understand that when dividing…