This paper addresses the subject of the semiosis process in the transactions between teachers and students about the knowledge at stake in science education. We present a conceptualisation of these transactions as a joint action between students and teachers. This conceptualisation enables us to understand the semiosis process as it unfolds during…

Revisions in writing aim at text improvement. Literature has shown that revision activity differs between novice and experienced writers. Our ultimate goal is to understand how children and adolescents develop the capacity to shift perspectives from language producer to language recipient -- a prerequisite ability to successful revision. In this…

We investigated changes across grades in the cognitive demands associated with the organizing subprocess of writing. A total of 85 fifth (age M = 10.8), 88 seventh (age M = 12.9), and 79 ninth (age M = 14.6) graders composed either a procedural text or an expository description on a digital tablet, on the basis of a "scrambled ideas"…