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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

Damerow, Peter; Westbury, Ian – Journal of Curriculum Studies, 1985
If a major objective of general education is to make children capable of understanding their worlds and of solving technical problems, then mathematics instruction must be provided for all children. However, historical analyses suggest that educators cannot expect great success in implementing this "mathematics for all" orientation in…
Descriptors: Comparative Education, Educational Change, Educational History, Educational Needs