Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON N1G 2W1, Canada.
College of Biological Sciences Office of Educational Scholarship and Practice (COESP), University of Guelph, Guelph, ON N1G 2W1, Canada.
CBE Life Sci Educ. 2017 Summer;16(2). doi: 10.1187/cbe.16-01-0004.
Large class learning is a reality that is not exclusive to the first-year experience at midsized, comprehensive universities; upper-year courses have similarly high enrollment, with many class sizes greater than 200 students. Research into the efficacy and deficiencies of large undergraduate classes has been ongoing for more than 100 years, with most research associating large classes with weak student engagement, decreased depth of learning, and ineffective interactions. This study used a multidimensional research approach to survey student and instructor perceptions of large biology classes and to characterize the courses offered by a department according to resources and course structure using a categorical principal components analysis. Both student and instructor survey results indicated that a large class begins around 240 students. Large classes were identified as impersonal and classified using extrinsic qualifiers; however, students did identify techniques that made the classes feel smaller. In addition to the qualitative survey, we also attempted to quantify courses by collecting data from course outlines and analyzed the data using categorical principal component analysis. The analysis maps institutional change in resource allocation and teaching structure from 2010 through 2014 and validates the use of categorical principal components analysis in educational research. We examine what perceptions and factors are involved in a large class that is perceived to feel small. Our analysis suggests that it is not the addition of resources or difference in the lecturing method, but it is the instructor that determines whether a large class can feel small.
大班教学在中型综合性大学中并不是新生事物;高年级课程的注册人数同样很高,许多班级的规模都超过 200 名学生。对大型本科生课堂的效果和缺陷的研究已经进行了 100 多年,大多数研究将大班与学生参与度低、学习深度降低和互动效果不佳联系起来。本研究采用多维研究方法,调查了学生和教师对大型生物学课程的看法,并使用类别主成分分析根据资源和课程结构对系里开设的课程进行了分类。学生和教师的调查结果都表明,一个 240 名左右学生的班级可以被视为大班。大班被认为是缺乏人情味的,并使用外在的形容词来分类;然而,学生确实确定了一些使课程感觉更小的技巧。除了定性调查,我们还尝试通过收集课程大纲中的数据并使用类别主成分分析来量化课程。该分析描绘了 2010 年至 2014 年资源分配和教学结构的机构变化,并验证了类别主成分分析在教育研究中的应用。我们探讨了在一个被认为规模较小的大班中涉及到哪些观念和因素。我们的分析表明,决定大班是否能让人感觉规模较小的不是资源的增加或授课方式的差异,而是教师。