O'Dowd Diane K, Aguilar-Roca Nancy
Departments of Developmental and Cell Biology and Anatomy and Neurobiology, University of California, Irvine, Irvine, CA 92697-1280, USA.
CBE Life Sci Educ. 2009 Summer;8(2):118-22. doi: 10.1187/cbe.09-01-0001.
Colorful PowerPoint presentations with detailed drawings, micrographs, and short animations have become the standard format for illustrating the fundamental features of cell biology in large introductory classes. In this essay, we describe a low-tech tool that can be included in a standard lecture to help students visualize, understand, and remember the dynamic aspects of microscopic cell biological processes. This approach involves use of common objects, including pipe insulation and a garden hose, to illustrate basic processes such as protein folding and cloning, hence the appellation "garage demos." The demonstrations are short, minimizing displacement of course content, easy to make, and provide an avenue for increasing student-faculty interaction in a large lecture hall. Student feedback over the past 4 years has been overwhelmingly positive. In an anonymous postclass survey in 2007, 90% of the respondents rated garage demos as having been very or somewhat helpful for understanding course concepts. Direct measurements of learning gains on specific concepts illustrated by garage demos are the focus of an ongoing study.
配有详细绘图、显微照片和简短动画的彩色PowerPoint演示文稿已成为在大型入门课程中阐释细胞生物学基本特征的标准形式。在本文中，我们描述了一种可以纳入标准讲座的低技术工具，以帮助学生直观理解并记住微观细胞生物学过程的动态方面。这种方法涉及使用包括管道保温材料和花园软管在内的常见物品，来阐释诸如蛋白质折叠和克隆等基本过程，因此被称为“车库演示”。这些演示简短，将对课程内容的占用降至最低，制作容易，并且为在大型讲堂中增加师生互动提供了一条途径。过去四年里学生的反馈一直是压倒性的积极。在2007年的一项匿名课后调查中，90%的受访者认为车库演示对理解课程概念非常有帮助或有些帮助。对车库演示所阐释的特定概念的学习收获进行直接测量是一项正在进行的研究的重点。
