The Third International Mathematics and Science Study (TIMSS) 1999 Video Study examined eighth-grade mathematics teaching in the United States and six higher-achieving countries. A range of teaching systems were found across higher-achieving countries that balanced attention to challenging content, procedural skill, and conceptual understanding in…

In order to improve teaching, it is important to understand why teaching looks the way that it now does and how its general form can be explained. One way to address this question is at the classroom level. This approach has been found in the ethnographic work of anthropologists and has been skillfully applied in the recent work of such…

Debates about the future of school mathematics in the United States often center on whether standards-based instruction is improving or undermining students' achievement. Critical for making progress in these debates is information about the actual nature of classroom practice in U.S. classrooms. This article focuses on one key element of…