We discuss the importance of bringing teaching to the forefront of instructional design. We do so by describing the process of developing an instructional sequence for early number, using design research. The instructional sequence was developed with the specific aim of supporting teaching, conceived as a complex and demanding job, not reducible…

In this paper we present how the redesign of professional tasks in the teachers' formation of Secondary Mathematics Teachers influences changes in didactical analysis competency of future secondary school teachers. We draw on data collected from 3 groups of prospective teachers, using qualitative methods. We discuss how the training on the use of…

The report is a review of research results which concern sequencing (procedures for validating the hypothesized ordering of the subordinate tasks in a learning hierarchy) and practical applications of learning hierarchies in instructional design. Indirect versus direct validation procedures are examined in detail. (Author)

Three methods of sequencing coordinate concepts (simultaneous, collective, and successive) were investigated with a Bayesian, computer-based, adaptive control system. The data analysis showed that when coordinate concepts are taught simultaneously (contextually similar concepts presented at the same time), student performance is superior to either…

This paper offers a critique of elaboration theory (ET) based on recent cognitive research and offers suggestions for updating the model to reflect new knowledge. It begins by summarizing the basic strategies of this model for sequencing and organizing courses of instruction: (1) organizing structure; (2) simple-to-complex sequence; (3) sequencing…

The sequences of learning sets (intersequence) and instructional events (intrasequence) were empirically validated for a hierarchy of concept and rule using skills. Experiments with high school students showed no differences between empirical and reordered inter- or intrasequence on time to mastery; nor was there a difference in the number of…

A total of 132 volunteer 10th and 11th grade students participated in an experiment to investigate two variables of computer-based adaptive instructional strategies for concept learning. The first variable tested the hypothesis that selection of number of examples according to on-task information is more efficient than selection according to…

This study explored the enhancement of comprehension of expository text by three specific types of embedded explication--etymological, causal, and analogical--together with momentum effects from sequencing. Four factors were examined: (1) the experimental effects of presenting the section of the script containing explications of new terms before…