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Yackel, Erna; Stephan, Michelle; Rasmussen, Chris; Underwood, Diana – Educational Studies in Mathematics, 2003
In this paper we present three cases of instructional design that illustrates both horizontal didactising, the activity of using already established principles to design instruction, and vertical didactising the activity of developing new tools and principles for instructional design. The first case illustrates horizontal didactising by…
Descriptors: Persuasive Discourse, Instructional Design, Foreign Countries, Mathematics Education