Nonmajors Biology Course Research Articles

College students in the southern US can change their views about evolution

ABSTRACT Students enrolled in two sections of a first-year non-majors biology course at a mid-sized university in the Mid-South were administered an instrument pre- and post-course comprised of the Measure of the Acceptance of the Theory of Evolution (MATE), the Generalized Acceptance of EvolutioN Evaluation (GAENE), 10 items related to pre-existing attitudes towards science and religion, and demographic items. Students in both sections received instruction in evolution, with one section receiving a supplemental presentation on the varying views within creationism. Correlations between MATE and GAENE scores were calculated, and comparisons were made between sections on changes in scores for both measures. We sought to answer these questions: 1) What is the current level of acceptance among first-year students in the Mid-South? 2) Are students amenable to changing their views? 3) Does discussing various creationist views matter? 4) Do demographics or pre-existing attitudes predict students’ acceptance? Students in both sections showed significant increases in acceptance, though no difference in the degree of increase was detected between the supplemented and standard instruction sections. Public high school graduates had higher initial acceptance than non-public school students. Strong correlations between measurement instruments were detected.

Assessing the Impact of an Undergraduate Biology Course for Non-Majors on Students’ Scientific Literacy, Perceptions of Science, and Confidence in Their Ability to Engage in Scientific Inquiry

Assessing the Impact of an Undergraduate Biology Course for Non-Majors on Students’ Scientific Literacy, Perceptions of Science, and Confidence in Their Ability to Engage in Scientific Inquiry

Involuntary Online Learners: Engaging Online Students Who Preferred F2F Science Classes During the COVID-19 Pandemic

AbstractIn this descriptive analysis, we consider the experiences of students who prefer face-to-face (F2F) classes but, due to the COVID-19 pandemic, had no alternative other than taking their introductory biology class online during the 2020–2021 academic year. We conducted focus group interviews with 12 college students who enrolled in an asynchronous online introductory biology course for non-majors. We interpret their experiences through the theoretical framing of student engagement, which generally centers students as the directors of their learning experiences. However, when reflecting on their online, technologically mediated experience, our participants regarded their instructors as the hub or convener of their interactions with content, technology, and other learners. We explore the implications of these findings for engaging other students who may find themselves involuntarily online, and make recommendations for pedagogy and communication around the culture of online learning.

The retention benefits of cumulative versus non-cumulative midterms in introductory biology may depend on students' reasoning skills.

Assessment has long played an important role as a measurement tool of student mastery over course content. However, testing has also been shown to be an effective learning tool. Cumulative testing, in which all material from the entire learning period is covered, has been assumed to be effective, yet few studies have explicitly tested its effectiveness compared to non-cumulative testing. Studies in psychology and mathematics courses suggest that cumulative final exams increase long-term retention of information, and cumulative testing during the semester can increase cumulative final exam performance and long-term retention. Because frequent testing has also been shown to increase student learning, the purpose of this quasi-experimental study is to investigate the effects of cumulative versus non-cumulative midterms on student learning in a course that uses frequent assessment. In this study, one section of an introductory biology course for non-majors was given seven cumulative midterms, with about half of the questions drawn from previous units and the rest covering the current unit. The other section was given seven non-cumulative midterms that focused on current material while other course characteristics were held constant. Student performance on a common, cumulative final exam and a retention exam five months later were compared. Midterm format had no effect on final exam performance, contradicting the few studies done in psychology and mathematics courses. Thus, there may be no additional benefit of cumulative testing if exams are given frequently. Cumulative midterms appeared to increase retention after five months, but only for students who entered the course with low reasoning skills. Interestingly, students with high reasoning skills appeared to retain more from the course if they were given non-cumulative midterms. Possible explanations and ideas for future research are discussed.

Professional science education videos improve student performance in nonmajor and intermediate biology laboratory courses.

Undergraduate biology laboratories emphasize hands-on skills. Typically, descriptions of manual techniques are delivered via written instruction. Custom-produced prelab instructional videos, which augment prelab instruction, have come into wider use in recent years. However, institutional and economic barriers can interfere with video production at all colleges and universities. In such cases, professionally produced laboratory instructional videos provide an attractive alternative. We hypothesized that students who watch short, professionally produced instructional videos before performing a laboratory would feel more confident and achieve greater learning gains than students whose prelab instruction was limited to handouts. For this proof of concept study, we investigated the value added when students watched a brief video, twice per lab, in an intermediate molecular biology course at a small, liberal arts university, and in a nonmajors biology course at a large, public research university. Both video and nonvideo comparison groups were administered a pre- and postlab exams. A postlab self-efficacy survey was also administered to video groups. Our results reveal that in three out of the four laboratory classes, students who watched professional instruction videos performed significantly better in both pre- and postlab exams. For these students, we observed up to a two-fold increase in test scores on scientific concepts and techniques. For all classes, most of the video group students reported that the video contributed to their confidence, comprehension of concepts, and understanding of how to conduct the lab. We conclude that professional instructional videos may address production barriers and have the potential to effectively enhance undergraduate science curricula and significantly improve students' performance.

In a "Scientist Spotlight" Intervention, Diverse Student Identities Matter.

We report on a brief, simple, online course intervention designed to reduce identity gaps and help students see their “possible selves” in working scientists. Students (n = 238) in a large-enrollment, introductory biology course for nonmajors were assigned nine podcasts, distributed throughout the semester. These podcasts each featured a scientist telling a “true, personal story about science,” and we intentionally selected podcasts featuring scientists from diverse backgrounds. We hypothesized that this intervention would serve to broaden student perceptions of science and scientists, and we used a mixed-methods approach to analyze (a) survey data and (b) short written responses about how these podcasts impacted students’ views of the people who do science. Student survey responses confirm that students overwhelmingly found the podcasts valuable, engaging, and relatable, and student impressions varied as a function of student identity (gender, religiosity, sexual orientation, etc.). Further, these podcasts changed student perceptions of the sort of people who do science. This work builds on earlier findings and expands the current work to include a look at how students from a range of different identities—hidden and visible—respond to a simple intervention designed to counter stereotypes about scientists.

Exploring Species Interactions with "Snapshot Serengeti"

Authentic learning experiences are a valuable way for students to gain an in-depth understanding of the scientific process. However, implementing such experiences in large enrollment courses can be challenging. Here, we present a community ecology lab module that uses data from a long-term camera trap study to allow students to design and conduct their own scientific inquiries. "Snapshot Serengeti" is a 10+ year wildlife monitoring survey in Serengeti National Park, Tanzania. Over 200 camera traps continuously collect fine-scale spatial and temporal data on the dynamics of ~50 animal species. The charismatic subject matter (large African animals) engages students, encouraging excitement about the topic, while the ample amount of processed data enables students to conduct real ecological research. In this lab, students collaborate in all stages of the research process. We present two lab variations: a four-week in-person and five-week remote-learning online option. From this module, students learn to generate testable research questions, produce and interpret graphs, participate in peer review, and communicate their results in both oral and written format. While originally developed for a 1000-level introduction biology course for non-majors, this material could easily be adapted to provide authentic hypothesis testing and data analysis experience to biology majors. In addition to a greater awareness of community ecology principles, students will come away from this lab with a better understanding of how exploratory research fits into the scientific process and confidence in their own ability to engage in the process of science. <em>Primary image: </em>Captured by camera trap - a wildebeest and zebra grazing in the Serengeti: Using camera trap images such as this from the long-term camera trapping program “Snapshot Serengeti”, students will analyze real data on Serengeti ecosystem dynamics and generate their own questions to explore African animal behavior and ecology. This image is available under a Creative Commons 4.0 International License.

Pairing practice and feedback with animations optimizes student learning in online module

AbstractIn this study, we investigated the optimal placement of animations and practice and feedback exercises with respect to each other and to static text and graphics in an online DNA replication module. We randomly assigned students in a first‐semester introductory biology course for freshmen biology majors and nonmajors to one of four online modules with animations and practice exercises (assets) either embedded with the text and images or saved until the end after all the text and images. Although we expected to find that embedding assets with text and images would improve learning outcomes, we were surprised to find that outcomes did not change with the location of these assets with respect to the text and static images. Instead, we found that colocation of exercises with animations was correlated with the biggest student learning gains, independent of where these assets appeared relative to the static text and static images. This held true both for immediate posttest scores and delayed application questions on a midterm exam. Our findings could have potential implications for how to best design online learning modules that feature multiple assets.

The First Line of Contact: How Course Syllabi Can Be Used to Gauge &amp; Reform Learner-Centeredness in a College Classroom

While learner-centeredness is important to quantify, education researchers disagree on how best to measure it. The overall aim of this research was to measure the learner-centeredness of introductory biology classrooms with a valid and reliable instrument that offers a different perspective than self-reported faculty surveys or expert observation protocols – Palmer et al.'s (2014) syllabus scoring rubric. We investigated whether syllabus rubric scores aligned with both faculty self-reports and expert observations of learner-centeredness from the same classrooms, and whether these other metrics predict an instructor's total syllabus score better than instructor gender or years of teaching experience. Course syllabi from eight instructors who taught the same nonmajors biology course were scored independently using this syllabus scoring rubric. Our results suggest that syllabus learning objectives link to learner-centeredness and, interestingly, that other external metrics of learner-centeredness may predict syllabus rubric scores derived from Palmer et al.'s instrument.

Peer Teaching Increases Knowledge and Changes Perceptions about Genetically Modified Crops in Non-Science Major Undergraduates.

We analyzed effects of peer teaching on non–science major undergraduates’ knowledge, perceptions, and opinions about genetically modified (GM) crops and their use in agriculture. Undergraduates enrolled in an introductory nonmajors biology course participated in a service-learning program (SLP) in which they acted as cross-age peer teachers to high school students, teaching about the role of genetics in crop improvement through traditional breeding and GM approaches. Using pre/postassessments, we found that undergraduates’ opinions shifted to favor the use of GM organisms (GMOs) in agriculture after SLP participation, rising from 46 to 97%. Perceptions about risks and benefits of GMOs also shifted from 43% stating that GMOs are harmful or suspect to no students describing GMOs in that way. Knowledge about GMOs became more accurate after SLP participation. There were significant correlations between students who had negative perceptions of GMOs and negative opinions or inaccurate knowledge about them. Students recognized the effect of peer teaching on their knowledge and perceptions, identifying the repeated peer teaching as an important factor in knowledge gain. Our results suggest students developed an informed opinion about the use of GMOs through first learning the science of genetic engineering and then teaching this information to younger students.

Effect of an Online, Inquiry- &amp; Mentor-Based Laboratory on Science Attitudes of Students in a Concurrent Enrollment Biology Course: The PlantingScience Experience

The goal of this project was to determine the impact of supplementing a concurrent enrollment (CE; also called dual enrollment) nonmajors biology course with online mentoring from professional scientists via the PlantingScience (PS) program (http://plantingscience.org). Student attitudes and motivation toward science were measured using the Test of Science-Related Attitudes (TOSRA) questionnaire as well as open-ended questions. Students in both the experimental group (CE biology course supplemented with PS) and the control group (CE biology course with no PS supplement) were surveyed during two academic years (2015–2017). The impact of PlantingScience on students’ attitudes toward science is discussed.

Encouraging Science Communication through Deliberative Pedagogy: A Study of a Gene Editing Deliberation in a Nonmajors Biology Course.

Deliberative pedagogy encourages productive science communication and learning through engagement and discussion of socio-scientific issues (SSI). This article examines a two-day deliberation module on gene editing that took place in an introductory nonmajors biology course, furthering research on integrating deliberative discussion into the biology classroom. The results demonstrate the benefits of a single, episodic deliberation in the classroom, which can positively encourage active discussion and critical awareness of connections between biology and real-world issues, thus contributing to the development of scientific citizenship. Additionally, the findings show that gene editing is an apt SSI topic for the deliberative process because it encourages productive communication practices of scientific citizenship, including discussion, perspective taking, questioning, and consideration of different types of evidence when coming to a decision.

Does the Room Matter? Active Learning in Traditional and Enhanced Lecture Spaces.

SCALE-UP-type classrooms, originating with the Student-Centered Active Learning Environment with Upside-down Pedagogies project, are designed to facilitate active learning by maximizing opportunities for interactions between students and embedding technology in the classroom. Positive impacts when active learning replaces lecture are well documented, both in traditional lecture halls and SCALE-UP-type classrooms. However, few studies have carefully analyzed student outcomes when comparable active learning-based instruction takes place in a traditional lecture hall and a SCALE-UP-type classroom. Using a quasi-experimental design, we compared student perceptions and performance between sections of a nonmajors biology course, one taught in a traditional lecture hall and one taught in a SCALE-UP-type classroom. Instruction in both sections followed a flipped model that relied heavily on cooperative learning and was as identical as possible given the infrastructure differences between classrooms. Results showed that students in both sections thought that SCALE-UP infrastructure would enhance performance. However, measures of actual student performance showed no difference between the two sections. We conclude that, while SCALE-UP-type classrooms may facilitate implementation of active learning, it is the active learning and not the SCALE-UP infrastructure that enhances student performance. As a consequence, we suggest that institutions can modify existing classrooms to enhance student engagement without incorporating expensive technology.

Ripped from the Headlines: Using Current Events and Deliberative Democracy to Improve Student Performance in and Perceptions of Nonmajors Biology Courses

Despite the importance of scientific literacy, many foundational science courses are plagued by low student engagement and performance. In an attempt to improve student outcomes, an introductory biology course for nonscience majors was redesigned to present the course content within the framework of current events and deliberative democratic exercises. During each instructional unit of the redesigned course, students were presented with a highly publicized policy question rooted in biological principles and currently facing lawmakers. Working in diverse groups, students sought out the information that was needed to reach an educated, rationalized decision. This approach models civic engagement and demonstrates the real-life importance of science to nonscience majors. The outcomes from two semesters in which the redesign were taught were compared with sections of the course taught using traditional pedagogies. When compared with other versions of the same course, presenting the course content within a deliberative democratic framework proved to be superior for increasing students’ knowledge gains and improving students’ perceptions of biology and its relevance to their everyday lives. These findings establish deliberative democracy as an effective pedagogical strategy for nonmajors biology.

Student Scientists: Transforming the Undergraduate Biology Lab into a Research Experience

This article features an authentic research-lab experience developed for use in a freshman-level general biology course for nonmajors at a two-year college. Students work in groups to select and investigate factors affecting microalgal cell growth and relate their findings to a real-life application of social significance. This lab experience was designed using a four-step pedagogical framework originally developed at a four-year university in a sophomore-level molecular and cell biology course. The creators of the pedagogical framework at the four-year university mentored the instructor at the two-year college through the process of using the pedagogical framework to design and implement the authentic research lab experience described in this article. This example shows that adaptation of successful pedagogical models, particularly within mentoring partnerships, can greatly increase the implementation of authentic research experiences in biology lab courses at varying levels of study.

Improving Course Coherence &amp; Assessment Rigor: “Understanding by Design” in a Nonmajors Biology Course

Instructors in two- and four-year undergraduate institutions face a variety of challenges in designing and delivering high-quality courses for their students and in creating accurate assessments of student learning. Traditional course planning (a linear, start-to-finish process based on the knowledge and perspective of the instructor) can lead to lack of clarity of learning objectives for students, uncertainty about course priorities for both instructor and students, and poor alignment between course material and assessments. To address these issues, Understanding by Design (UbD), a course-planning protocol widely used in K–12 education, was implemented to redesign a one-semester, nonmajors “Sensation &amp; Perception” course at a four-year liberal arts college. This implementation improved the instructor's understanding of desired student learning outcomes, allowed core concepts and science competencies to be prioritized as recommended by the “Vision and Change” reform initiative, and led to decreased lecture time in favor of greater lab and student-driven discussion time. In addition, this process allowed components of evidence-based reasoning and scientific process to be incorporated authentically into assessments. Despite the increasing rigor of assessments, there was a statistically significant increase in students earning an A or B on the final exam after UbD implementation.

Deliberative Pedagogy in a Nonmajors Biology Course: Active Learning That Promotes Student Engagement With Science Policy and Research

Deliberative Pedagogy in a Nonmajors Biology Course: Active Learning That Promotes Student Engagement With Science Policy and Research

Nonmajors' Shifts in Attitudes &amp; Perceptions of Biology &amp; Biologists Following an Active-Learning Course:

This exploratory study examined the impacts of a student-centered, active-learning course on nonmajors' attitudes and perceptions of biology and biologists. Results revealed changes along various measured attitude variables. Most notably, participants saw significant positive shifts in their perceptions of biology as a scientific field that contrasted with their relatively stable perceptions of biologists as scientists. Implications are discussed in the context of the impacts of nonmajors biology courses on future K–12 science instructors and potential influxes of students into the science pipeline.

Influencing highly religious undergraduate perceptions of evolution: Mormons as a case study

Students frequently hold an incorrect view of evolution. There are several potential barriers that prevent religious students, specifically, from engaging evolutionary theory in the classroom. This study focuses on two hypothesized barriers on learning evolutionary theory in a highly religious model population, specifically members of The Church of Jesus Christ of Latter-day Saints (LDS or Mormon): (1) religious views stemming from incorrect or inadequate understanding of the Mormon church’s neutral stance on evolution and (2) misunderstanding of the theory of evolution. The LDS population at Brigham Young University provides the ideal setting for studying evolution education among religious individuals in a controlled environment. To ascertain the prevalence and effect of these barriers, we measured the relationship between acceptance of evolution and knowledge of evolution, religiosity, and understanding of religious doctrine on evolution in introductory non-majors biology courses. Additionally, we measured the effect of including a discussion on religious doctrine in the classroom. Students in all sections, except for one control section, were taught a unit on evolution that included a discussion on the neutral LDS doctrine on evolution. Data was gathered pre, post, and longitudinally. Our data demonstrate a positive relationship between knowledge and acceptance of evolution, a positive relationship between understanding of religious doctrine and acceptance of evolution, and a negative relationship between religiosity and acceptance of evolution. Additionally, when an in-class discussion was held addressing the LDS doctrine on evolution students became more accepting of the principles of evolution. These data provide compelling evidence that an accurate understanding of their religious doctrines and knowledge of evolution can lead to greater acceptance of the basic concepts of evolution among highly religious students.

The Greatest Learning Return on Your Pedagogical Investment: Alignment, Assessment or In-Class Instruction?

Critical thinking is often considered an essential learning outcome of institutions in higher education. Previous work has proposed three pedagogical strategies to address this goal: more active, student-centered in-class instruction, assessments which contain higher-order cognitive questions, and greater alignment within a classroom (i.e., high agreement of the cognitive level of learning objectives, assessments, and in-class instruction). Our goals were to determine which of these factors, individually or the interactions therein, contributed most to improvements in university students’ critical thinking. We assessed students’ higher-order cognitive skills in introductory non-majors biology courses the first and last week of instruction. For each of the fifteen sections observed, we also measured the cognitive level of assessments and learning objectives, evaluated the learner-centeredness of each classroom, and calculated an alignment score for each class. The best model to explain improvements in students’ high-order cognitive skills contained the measure of learner-centeredness of the class and pre-quiz scores as a covariate. The cognitive level of assessments, learning objectives, nor alignment explained improvements in students’ critical thinking. In accordance with much of the current literature, our findings support that more student-centered classes had greater improvements in student learning. However, more research is needed to clarify the role of assessment and alignment in student learning.