教学手段评价指标聚类分析

Cluster Analysis of Evaluation Indices of Teaching Means

采用问卷调查方式获取了1155名在校大学生对教学手段评价指标的评判信息,对调查结果进行了基础统计分析,并对具有明确指向的11项指标进行了聚类分析。聚类分析采用了两种测度方法。值差相异性测度将指标按重要程度聚为四类,其中最受关注的一类中包括:有助于当堂消化教学内容;生动、趣味性强;节奏适中,有充裕的时间让学生思考。分布相似性测度将指标按作用聚为三类,除信息量指标相对独立外,其他指标可分为两大类:一类主要反映了教学手段在促进掌握教学内容方面的作用,另一类主要反映了教学手段在外显形式方面的特征,这两类指标的受关注程度大体持平。

Questionnaire method was adopted to obtain 1155 students＇ judgement on evaluation indices of the teaching means, the base statistic analysis of inquisitional result and the cluster analysis of 11 indices of specific direction were made. Two measures were used in the cluster analysis. Using size difference dissimilarity measure, four clusters of the indices were clustered on the importance, of which the indices of the most importent cluster included：helping digest the content of course in time, vivid and interesting, and suitable rhythm to enable students to think with enough time. Using dispersion similarity measure, three dusters of the indices were clustered on function. Except the information quantity index with relative independence, two major clusters were clustered from other indices. A cluster reflects the function of teaching means facilitating grasp of content of course, another reflects the apparent feature of teaching means. These two clusters of indices were paid attention to equally.