This article describes a powerful new method for teaching students about electronic structure and its relevance to chemical phenomena. This method, developed and used for several years in general chemistry and organic chemistry courses, relies on computer-generated three-dimensional models of electron density distributions.
Embedding active learning is a common mechanism for meeting science, technology, engineering, and mathematics (STEM) education reform goals. Researchers have identified student benefits from such strategies, yet these benefits may not be universal for all students. We sought to identify how students at a nontraditional university perceive introductory biology and chemistry courses, and whether perceptions relate to course type, performance, or student status. We surveyed students ( n = 601) using open-ended prompts regarding their perceptions of factors that impact their learning and interest, and about specific learning strategies. Generally, students did not differ in what influenced their learning or interest in course content, and students mostly perceived active learning positively. Attitudes toward active learning did not correlate to final course scores. Despite similar perceptions and attitudes, performance differed significantly among student groups—postbaccalaureates outperformed all others, and traditional-age students outperformed non-traditional-age students. We found that, even with active learning, underrepresented minority students underperformed compared to their peers, yet differentially benefited from nonsummative course factors. Although students generally perceive classroom environments similarly, undetected factors are influencing performance among student groups. Gaining a better understanding of how classroom efforts impact all of our students will be key to moving beyond supposing that active learning simply “works.”
There have been multiple national calls for curricular reform in science, technology, engineering, and mathematics (STEM), including a need to instill democratic skills in students. Democratic skill building can be embedded in STEM classrooms through intentional “deliberative pedagogies” that include communication, collaboration, and application of information. We developed and implemented a deliberative pedagogy, Deliberative Democracy (DD), for introductory majors and nonmajors undergraduate biology courses and took a longitudinal, qualitative research approach to understand students' experiences and perceptions of DD. We asked students to respond to open-ended survey questions regarding DD at two time points and conducted semi-structured follow-up interviews. All data were iteratively open-coded using content analysis. Students' perceptions of DD were lasting and generally positive, including self-reported themes related to DD promoting their awareness of the “real-world applications of science,” and increased “scientific literacy.” Negative perceptions of DD were largely related to issues with “group dynamics.” We detected differences between majors' and nonmajors' perceptions of DD, including in regard to scientific literacy and class time use. DD is a replicable pedagogy that can assist in instilling democratic skills in biology students.
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