Future science, technology, engineering,
and mathematics (STEM)
professionals are a key part of dealing with disasters like that of
the coronavirus disease of 2019, but the pandemic may result in a
gap in individuals joining the STEM workforce. In the present work,
we offer a picture of our students’ identity as scientists
and intentions to pursue a science career from before and after the
transition to online instruction that occurred as part of the initial
phase of the pandemic response. Additionally, we asked our students
to describe the ways this transition has affected their academic plans
to provide an in-depth look into their intentions. Data collection
involved the administration of a questionnaire to first-year general
chemistry laboratory students at the beginning and end of the spring
2020 semester (January–May). The data indicate that there was
no significant change to our students’ identities and intention
to pursue a career in science during spring 2020, and our students
written responses indicate that they are making short-term academic
changes that could affect their graduation date but do not suggest
any serious changes to career plans. We conclude that the initial
transition to online instruction due to the pandemic had a minimal
effect on our students’ career intentions, and future work
can use this data to better understand the long-term effects of the
pandemic on STEM students.
The increased use of video capable cellular phones to document everyday life presents educators with an exciting opportunity to extend this capability into the introductory laboratory. The study assessed whether students enrolled in a southeastern U.S. university's first-year laboratory course retained technical information at a higher rate after creating a technique video. These videos were created on hand-held video capable devices that students owned prior to enrolling in the course, eliminating additional cost to students. Pre-/post-test analysis (N = 509) was performed to determine short- and long-term learning gains regarding reporting the volume of graduated glassware to the proper number of significant figures. Though both groups used various graduated glassware throughout the term, chi-square analysis showed that students who created a video detailing use of a Mohr pipet reported the volume of graduated glassware correctly on the final exam and laboratory practical at a significantly higher rate than those students who received only verbal instruction on the technique.
Sample handling and laboratory notebook maintenance are necessary skills but can seem abstract if not presented to students in context. An introductory exercise focusing on proper sample handling, data collection and laboratory notebook keeping for the general chemistry laboratory was developed to emphasize the importance of keeping an accurate notebook. The exercise requires minimal technique or prior knowledge, and as such provides students a comfortable introduction to the college laboratory setting. Details of the activity, including preparation, background, procedure, and postactivity instruction, are provided. Alternative uses and application of the activity are also proposed.
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