新冠肺炎疫情最初封锁期间,本科生在向强制性在线化学实验室过渡期间的不同经历。

Joseph Watts, Kent J Crippen, Corey Payne, Lorelie Imperial, Melanie Veige
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引用次数: 2

摘要

新冠肺炎疫情最初封锁导致全球向在线教学的彻底转变,迫使许多科学教育工作者陷入困境,将基于面对面或实践目标和惯例的课程,包括教学实验室,转化为可以在线提供的课程。我们在一所研究密集、土地补助的公立机构的规模上使用了这一现象,以了解702名普通化学实验室本科生经历的各种转变。数据是在3周内收集的,同样的调查涉及四个开放式回答提示。分析涉及顺序解释混合方法,其中主题建模是一种机器学习技术,用于识别21个主题。作为经验的类别,这些主题被定义并通过不断比较的归纳编码进一步划分为52个维度。报告的优势和积极影响主要与实验室活动中的时间管理和教学批评有关。与其他关于疫情期间教学的报告一致,参与者认为助教的可用性是一个积极的影响。对弱点的感知与必须单独工作、实践经验、对教学的批评和边做边学最为相关。实践经验被解释为缺乏实践经验,是唯一一个几乎完全由弱点和负面影响组成的主题。“边做边学”是发生率最高的话题,但也同样被分为优势、积极含义、劣势和消极含义。分歧源于被认定为代表性不足的少数民族成员的学生所表现出的弱点。研究结果提醒我们,学生体验必须是任何教育努力的首要考虑因素,并需要继续作为在线科学环境研究和开发的主要重点。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

The varied experience of undergraduate students during the transition to mandatory online chem lab during the initial lockdown of the COVID-19 pandemic.

The varied experience of undergraduate students during the transition to mandatory online chem lab during the initial lockdown of the COVID-19 pandemic.

The varied experience of undergraduate students during the transition to mandatory online chem lab during the initial lockdown of the COVID-19 pandemic.

The varied experience of undergraduate students during the transition to mandatory online chem lab during the initial lockdown of the COVID-19 pandemic.

The radical global shift to online teaching that resulted from the initial lockdown of the COVID-19 pandemic forced many science educators into the predicament of translating courses, including teaching laboratories, that were based upon face-to-face or practical goals and conventions into ones that could be delivered online. We used this phenomenon at the scale of a research-intensive, land-grant public institution to understand the various ways that the switch was experienced by a large cohort of 702 undergraduate students taking General Chemistry Laboratory. Data was collected over 3 weeks with identical surveys involving four prompts for open-ended responses. Analysis involved sequential explanatory mixed methods where topic modeling, a machine learning technique, was used to identify 21 topics. As categories of experience, these topics were defined and further delineated into 52 dimensions by inductive coding with constant comparison. Reported strengths and positive implications tie predominantly to the topics of Time Management Across a Lab Activity and a Critique of Instruction. Consistent with other reports of teaching and learning during the pandemic, participants perceived Availability of the Teaching Assistant for Help as a positive implication. Perceptions of weakness were most associated with Having to Work Individually, the Hands On Experience, a Critique of Instruction, and Learning by Doing. Hands on Experience, which was interpreted as the lack thereof, was the only topic made up nearly entirely of weaknesses and negative implications. The topic of Learning by Doing was the topic of greatest occurrence, but was equally indicated as strengths, positive implication, weakness, and negative implication. Ramifications are drawn from the weaknesses indicated by students who identified as members of an underrepresented ethnic minority. The results serve as a reminder that the student experience must be the primary consideration for any educational endeavor and needs to continue as a principal point of emphasis for research and development for online science environments.

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