Analysis of Basic Characteristics of Presented Instructional Materials and Study of Factors of Comprehension

Abstract

In this research, we investigate the impact of the timing of associated oral explanations and the volume of textual information contained within teaching materials by blackboard- and slide-based presentations. We made comparative tests under varying conditions of both (a) amount of textual information and (b) the timing oral explanation, either with visual presentation or after it. Our results suggest that synchronous explanations, characteristic of blackboard-based presentations, have a positive impact on comprehension. We also experimentally reveal that the use of highly detailed presentations and explanations to solidify some point do not necessarily aid the learners' comprehension of that point. It is our hope that these findings will provide a foundation for further study of methods of presenting instructional materials.