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College science courses aim to teach students both disciplinary knowledge and scientific literacy skills. Several instruments have been developed to assess students’ scientific literacy skills, but few studies have reported how demographic differences may play a role. The goal of this study was to determine whether demographic factors differentially impact students’ scientific literacy skills. We assessed more than 700 students using the Test of Scientific Literacy Skills (TOSLS), a validated instrument developed to assess scientific literacy in college science courses. Interestingly, we found that Scholastic Aptitude Test (SAT) reading score was the strongest predictor of TOSLS performance, suggesting that fundamental literacy (reading comprehension) is a critical component of scientific literacy skills. Additionally, we found significant differences in raw scientific literacy skills on the basis of ethnicity (underrepresented minority [URM] vs. non-URM), major (science, technology, engineering, and mathematics [STEM] vs. non-STEM), year of college (e.g., senior vs. freshman), grade point average (GPA), and SAT math scores. However, when using multivariate regression models, we found no difference based on ethnicity. These data suggest that students’ aptitude and level of training (based on GPA, SAT scores, STEM or non–STEM major, and year of college) are significantly correlated with scientific literacy skills and thus could be used as predictors for student success in courses that assess scientific literacy skills.

Course-based undergraduate research experiences (CUREs) are an effective way to introduce students to contemporary scientific research. Research experiences have been shown to promote critical thinking, improve understanding and proper use of the scientific method, and help students learn practical skills including writing and oral communication. We aimed to improve scientific training by engaging students enrolled in an upper division elective course in a human microbiome CURE. The "Fiber Force" course is aimed at studying the effect of a wholesome high-fiber diet (40 to 50 g/day for two weeks) on the students' gut microbiomes. Enrolled students participated in a noninvasive diet intervention, designed health surveys, tested hypotheses on the effect of a diet intervention on the gut microbiome, and analyzed their own samples (as anonymized aggregates). The course involved learning laboratory techniques (e.g., DNA extraction, PCR, and 16S sequencing) and the incorporation of computational techniques to analyze microbiome data with QIIME2 and within the R software environment. In addition, the learning objectives focused on effective student performance in writing, data analysis, and oral communication. Enrolled students showed high performance grades on writing, data analysis and oral communication assignments. Pre-and post-course surveys indicate that the students found the experience favorable, increased their interest in science, and heightened awareness of their diet habits. Fiber Force constitutes a validated case of a research experience on microbiology with the capacity to improve research training and promote healthy dietary habits.

With the increased value of independently collected classroom observation data to biology education research, it is important that the field analyzes these data in the most appropriate manner. This work highlights considerations for cluster analysis of COPUS data and provides recommendations for researchers moving forward.

This paper describes the creation of a theme-based first quarter, of a two quarter sequence, general chemistry laboratory course following an argument driven inquiry format and employing specifications grading. The course contains four, two-week projects investigating the chemistry of a popular sports drink. The sugar content, dye concentration, buffering capacity, and the kinetics of dye decomposition are investigated for various flavors of Gatorade. Specifications grading is used to foster teamwork and to provide an opportunity for revision and resubmission of student work. A modified LCAS survey measured student perception of course content.

PurposeNot all students who did well in high school are successful in college, particularly in science, technology, engineering and math (STEM) majors with the most affected student groups including women, first-generation or historically disadvantaged students. Certain study skills may be associated with greater success in college, yet these skills may be less regularly used by those underrepresented groups.Design/methodology/approachThis paper reports the results of a survey given to several hundred newly-matriculated students before they began their first courses at a selective, public research university in the United States. Students in nine courses responded to the survey, with 1815 total respondents. Logistic regression and linear mixed effects models were used to analyze the data.FindingsWe found three skills were associated with course grade when adjusting for incoming GPA, SAT math and reading and GPA of other courses. Self-testing and rereading were both associated with increased grades, and flashcard use was associated with decreased grades. Of particular significance, underrepresented minority (URM) students were less likely to reread than majority students, and flashcard use was more common in women and URM students.Research limitations/implicationsIt is possible study skills changed over the course of the term because participants were surveyed at the beginning of their courses. Our future work will expand the courses surveyed and include a post-course survey.Originality/valueInformation that some student groups use less effective study skills will allow instructors and student support services to provide more targeted and useful study strategy advice.

Converting a first-term, accelerated summer organic chemistry course to a flipped format reduced the achievement gap in the flipped course and in the second-term traditional lecture course between Non-Repeaters taking an accelerated course to "get ahead" and Repeaters taking the course to "get back on track." The difference in final exam performance in the second-term course was nearly halved, the GPA gap in both courses was reduced, and the gap in passing rate for the second-term course was eliminated. While most students responded positively to the flipped course structure, repeating students held a stronger preference for the flipped format. These findings provide guidance on how to create courses that promote equity, access and retention of diverse students in STEM. File list (3) download file view on ChemRxiv CHEMRXIV Getting Students Back on Track Rev 111320.... (1.18 MiB) download file view on ChemRxiv ChemRxiv-Getting Students Back on Track Linear Mode... (163.98 KiB) download file view on ChemRxiv Getting Students Back on Track Survey Analysis.pdf (119.68 KiB)