The Digital Pipetting Badge: A Method To Improve Student Hands-On Laboratory Skills
The Digital Pipetting Badge: A Method To Improve Student Hands-On Laboratory Skills
复制标题
数字移液徽章：提高学生实验室实践技能的方法
DOI：
10.1021/acs.jchemed.5b00464
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发表时间：
2015
影响因子：
3
通讯作者：
Kevin O’Shea
中科院分区：
文献类型：
--
作者：
M. Towns;C. J. Harwood;M. Robertshaw;Jason Fish;Kevin O’Shea
以证据为中心的设计方法被用来开发、实施和评估一种使用普渡护照系统的新颖和创新的数字移液徽章。在一个大型讲座课程中，每个学生都制作了一段视频，演示如何使用10毫升的吸管来分配液体。视频被上传到Passport系统中，该系统允许教师向每个学生反馈他们的移液技术，并接受或拒绝视频。那些否认了视频的学生能够利用反馈来改进他们的技术，重新拍摄视频，并再次上传进行评分。学生在制作视频的实验室前后收集了他们对自己知识、自信和经验的感知。分析表明，学生的认知和较大的效应大小存在显著差异。超过90%的学生在第一次考试和期末考试中正确回答了一道与移液过程有关的选择题。数字移液器徽章的重要性和位置。
An evidence centered design approach was used to develop, implement, and assess a novel and innovative digital pipetting badge using Purdue’s Passport system. Each student in a large lecture course created a video demonstrating how to use a 10 mL pipet to dispense liquid. The video was uploaded into the Passport system, which allowed instructors to give each student feedback on their pipetting technique and to either accept or deny the video. Students who had denied videos were able to use the feedback to improve their technique, reshoot the video, and upload it again for grading. Student perceptions of their knowledge, confidence, and experience pipetting were collected before and after the laboratory where the videos were created. Analysis demonstrated significant differences in student perceptions and large effect sizes. Over 90% of students correctly answered a multiple-choice item on the first exam and the final pertaining to the process of pipetting. The digital pipetting badge significantly and pos...