Roberts Louis Anthony, Shell Scarlet S
Department of Biology and Biotechnology, Worcester Polytechnic Institute, Worcester, MA, United States.
Bioinformatics and Computational Biology Program, Worcester Polytechnic Institute, Worcester, MA, United States.
Front Microbiol. 2023 Jan 6;13:1025250. doi: 10.3389/fmicb.2022.1025250. eCollection 2022.
Undergraduate instructional biology laboratories are typically taught within two paradigms. Some labs focus on protocols and techniques delivered in "cookbook" format with defined experimental outcomes. There is increasing momentum to alternatively employ student-driven, open-ended, and discovery-based strategies, often course-based undergraduate research experiences (CUREs) using crowd-sourcing initiatives. A fraction of students also participate in funded research in faculty research labs, where they have opportunities to work on projects designed to expand the frontiers of human knowledge. These experiences are widely recognized as valuable but are not scalable, as most institutions have many more undergraduates than research lab positions. We sought to address this gap through our department's curriculum by creating an opportunity for students to participate in the real-world research process within a laboratory course. We conceived, developed, and delivered an authentic, guided research experience to students in an upper-level molecular biology laboratory course. We refer to this model as a "research program-linked CURE." The research questions come directly from a faculty member's research lab and evolve along with that research program. Students study post-transcriptional regulation in mycobacteria. We use current molecular biology methodologies to test hypotheses like "UTRs affect RNA and protein expression levels," "there is functional redundancy among RNA helicases," and "carbon starvation alters mRNA 5' end chemistries." We conducted standard assessments and developed a customized "Skills and Concepts Inventory" survey to gauge how well the course met our student learning outcomes. We report the results of our assessments and describe challenges addressed during development and execution of the course, including organizing activities to fit within an instructional lab, balancing breadth with depth, and maintaining authenticity while giving students the experience of obtaining interpretable and novel results. Our data suggest student learning was enhanced through this truly authentic research approach. Further, students were able to perceive they were participants and contributors within an active research paradigm. Students reported increases in their self-identification as scientists, and a positive impact on their career trajectories. An additional benefit was reciprocation back to the funded research laboratory, by funneling course alumni, results, materials, and protocols.
本科生物教学实验室通常在两种范式下开展教学。一些实验室专注于以“食谱”形式传授的实验方案和技术,实验结果是明确的。现在越来越倾向于采用以学生为驱动、开放式和基于发现的策略,通常是利用众包倡议开展基于课程的本科研究经历(CUREs)。一部分学生也会参与教师研究实验室的资助研究项目,在那里他们有机会参与旨在拓展人类知识前沿的项目。这些经历被广泛认为是有价值的,但不可扩展,因为大多数机构的本科生数量远多于研究实验室的岗位。我们试图通过本系的课程来填补这一空白,为学生创造一个在实验课程中参与实际研究过程的机会。我们构思、开发并为一门高级分子生物学实验课程的学生提供了一次真实的、有指导的研究经历。我们将这种模式称为“与研究项目相关的CURE”。研究问题直接来自教师的研究实验室,并随着该研究项目的发展而演变。学生们研究分枝杆菌中的转录后调控。我们使用当前的分子生物学方法来检验诸如“非翻译区影响RNA和蛋白质表达水平”、“RNA解旋酶之间存在功能冗余”以及“碳饥饿改变mRNA 5'端化学性质”等假设。我们进行了标准评估,并开发了一份定制的“技能与概念清单”调查问卷,以评估该课程在多大程度上实现了我们的学生学习目标。我们报告了评估结果,并描述了在课程开发和实施过程中遇到的挑战,包括组织活动以适应教学实验室、平衡广度与深度,以及在让学生获得可解释的新结果的同时保持真实性。我们的数据表明,通过这种真正真实的研究方法,学生的学习得到了加强。此外,学生能够感觉到他们是积极研究范式中的参与者和贡献者。学生们报告说,他们作为科学家的自我认同有所增强,并且对他们的职业轨迹产生了积极影响。另一个好处是,通过输送课程毕业生、研究结果、材料和实验方案,回馈了资助研究实验室。