The paper compares the nature of the textual construction of the Programme for International Student Assessment (PISA) science test items and the Greek school science textbooks. This nature is determined by the interplay of the notions of classification (content specialization) and formality (code specialization) modulated by both the linguistic…

In this paper, I address some of the unique challenges of studies of learning in museums through a microanalytic case study of meaning-making among a group of youth and a curator. Through an examination of youths' forms of participation in one exhibit, I illustrate local meaning making achieved through multiple modalities--by doing, talking, and…