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Effects of Segmenting Video Lectures on the Learning Outcomes -Focusing on the Mobile Learning Environment Using Smartphones-

동영상 강의 분할시간이 학습성과에 미치는 영향 -스마트폰을 활용한 모바일 학습환경을 중심으로-

  • 홍원준 (서울대학교 대학원 교육학과) ;
  • 임철일 (서울대학교 대학원 교육학과) ;
  • 박태정 (서울대학교 대학원 교육학과)
  • Received : 2013.09.27
  • Accepted : 2013.11.11
  • Published : 2013.12.28

Abstract

This study aims to evaluate the effect on the academic achievement and satisfaction of the learner's prior knowledge level and segmenting time of video lectures in an learning environment using smartphones. Depending on the level of prior knowledge, learners were divided into two groups of the upper 35% and the lower 35%. Each group was offered video lectures by a 5-min, 10-min, 15-min, and 20-min length. As a result, a high level of prior knowledge only had a positive effect on the academic achievement. With respect to the segmentation time of video lectures, 10-min, 15-min lectures were effective to the academic achievement and 15-min, 20-min lectures influenced positively the learners' satisfaction. Moreover, the interaction between the level of learners' prior knowledge and the segmentation time of video lectures only had an impact on their academic achievement. The results of the simple effect analysis conducted to examine the effect of interaction carefully show that 15-min, 20-min video lectures are more effective for the upper 35% in prior knowledge and 10-min ones are better for its' lower 35%. In a nutshell, these findings suggest that the high-prior knowledge groups could be provided with a longer video lectures, and furthermore, 5-min video lectures are not adequate in a mobile learning environment with smartphones.

Keywords

Mobile Learning Environment using Smartphones;Video Lectures;Segmentation;Prior Knowledge

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