The term social participation is widely used and has various meanings in different contexts. This article aims to enhance the understanding of social participation in science museums. The research was conducted using a cultural-historical perspective in six steps: (1) survey to identify the meanings attributed to the term social participation and…

Presents eight historical consensus models for teaching chemical kinetics. Models put forth by teachers and textbooks in a Brazilian secondary classroom were analyzed and discussed and found to be hybrids of the historical models. The existence of hybrid models in science teaching is proposed as a new component in science teachers' training…

In some contexts, a photograph may be worth a thousand words. Previous research revealed a dialectical character of photographs: they simultaneously lack determinacy and exhibit an excess of meaning. The purpose of this study was to understand how, under this condition, high school students interpret photographs that were accompanied by different…

In this paper, we draw upon a framework for analyzing the discursive interactions of science classrooms (Mortimer & Scott, 2003, "Meaning Making in Secondary Science Classrooms," Maidenhead, UK: Open University Press), to probe the movement between authoritative and dialogic discourse in a Brazilian high school science class. More…