These results add nuance to lab findings and help instructors prioritize study habits to target for change.Recent research has begun to explore the experiences of Christian undergraduates and faculty in biology to illuminate reasons for their underrepresentation. In this study, we focused on the experiences of graduate students and explored Christianity as a concealable stigmatized identity (CSI) in the biology community. We constructed interview questions using this CSI framework, which originates in social psychology, to research the experiences of those with stigmatized identities that could be hidden. We analyzed interviews from 33 Christian graduate students who were enrolled in biology programs and found that many Christian graduate students believe the biology community holds strong negative stereotypes against Christians and worry those negative stereotypes will be applied to them as individuals. We found that students conceal their Christian identities to avoid negative stereotypes and reveal their identities to counteract negative stereotypes. Despite these experiences, students recognize their value as boundary spanners between the majority secular scientific community and majority Christian public. Finally, we found that Christian students report that other identities they have, including ethnicity, gender, nationality, and LGBTQ+ identities, can either increase or decrease the relevance of their Christian identities within the biology community.Graduate teaching assistants (TAs) are often responsible for teaching introductory courses to undergraduate science, technology, engineering, and mathematics students. The TAs are usually novices at teaching, and an important factor in their resilience and persistence in the face of inevitable challenges is self-efficacy. Little is known about what affects TA teacher efficacy or whether and how high- and low-efficacy TAs differ in their development as teachers. Bridging these gaps in the literature will inform best practices in developing and implementing professional development (PD) for TAs. Using a mixed-methods sequential exploratory research design, this study found differences in high- and low-efficacy TAs in both TAs’ self-reflection and their students’ perceptions. These differences concerned the focus of TAs’ attention inward at their own practices and emotions (salient in low-efficacy TAs) versus outward at the impact of their instructional guidance on their learners (prevalent in high-efficacy TAs). A proposed model of teacher efficacy based on TAs but generally applicable is presented to inform future research and provide suggestions for TA PD opportunities.Student impressions formed during the first day of class can impact course satisfaction and performance. Despite its potential importance, little is known about how instructors format the first day of class. Here, we report on observations of the first day of class in 23 introductory science, technology, engineering, and math (STEM) courses. We first described how introductory STEM instructors structure their class time by characterizing topics covered on the first day through inductive coding of class videos. CC-4047 We found that all instructors discussed policies and basic information. However, a cluster analysis revealed two groups of instructors who differed primarily in their level of STEM content coverage. We then coded the videos with the noncontent Instructor Talk framework, which organizes the statements instructors make unrelated to disciplinary content into several categories and subcategories. Instructors generally focused on building the instructor-student relationship and establishing classroom culture. Qualitative analysis indicated that instructors varied in the specificity of their noncontent statements and may have sent mixed messages by making negatively phrased statements with seemingly positive intentions. These results uncovered variation in instructor actions on the first day of class and can help instructors more effectively plan this day by providing messages that set students up for success.The think-pair-share is a common teaching tool, but how critical is the “share” step in helping students achieve learning goals? This feature examines assumptions that instructors may make about the share, explores unanticipated impacts of the share, and provides alternatives to having students share their thoughts in front of the class.biological processes that occur at the submicroscopic level, such as osmosis and diffusion, are inherently difficult for many students to conceptualize when traditional learning and teaching methods are used. This study introduced an immersive 320° three-dimensional (3D) experience of osmosis in which students became engaged with the cellular environment in a Cave Automatic Virtual Environment. The aims of this study were 1) to explore whether a textbook diagram of osmosis recreated as an immersive 3D learning experience would be a meaningful tutorial activity for first-year cell biology students at a regional Australian university; and 2) to gather preliminary evidence of the utility of the tutorial by examining student performance data. The experience was perceived by students to be fun, useful, and educational. Performance of all students improved on a multiple-choice exam question, with the percentage of students choosing the osmosis distractor answer decreasing from 26 to 15% (p less then 0.001). Those students with moderate to high base-level knowledge also performed better on short-answer questions about the cell membrane and osmosis (10-14% better, depending on base-level knowledge, p less then 0.001). We give recommendations for future studies to investigate using immersive visualization in science teaching.Science self-efficacy, a student’s confidence in being able to perform scientific practices, interacts with science identity and outcomes expectations, leading to improved performance in science courses, persistence in science majors, and ultimately, the pursuit of advanced training in the sciences. Inquiry-based laboratory courses have been shown to improve undergraduate student self-efficacy, but the mechanisms involved and specific components of instructional practices that lead to improved self-efficacy are not clear. In the current study, we determined whether student and faculty perceptions of laboratory instructional practices (scientific synthesis, science process skills, and instructor-directed teaching) were related to postsemester self-efficacy across 19 guided-inquiry laboratory courses from 11 different institutions. Self-efficacy related to science literacy increased significantly from the beginning of the semester to the end of the semester. Variation in individual student perceptions of instructional practices within a course were significantly related to differences in student self-efficacy at the end of the semester, but not average student perceptions or faculty perceptions of their own practices across courses.