Supporting the development of scientific understanding when constructing an evolving explanation

We explore how students developed an integrated understanding of scientific ideas and how they applied their understandings in new situations. We examine the incremental development of 7th grade students’ scientific ideas across four iterations of a scientific explanation related to a freshwater system. We demonstrate that knowing how to make use of scientific ideas to explain phenomena needs to be learned just as developing integrated understanding of scientific ideas needs to be learned. Students participated in an open-ended, long-term project-based learning unit, constructing one explanation over time to address, “How healthy is our stream for freshwater organisms and how do our actions on land potentially impact the water quality of the stream?” The explanation developed over several weeks as new data were collected and analyzed. Students discussed evidence by revisiting scientific ideas and including new scientific ideas. This research investigates two questions: (1) As students engage in writing a scientific explanation over time, to what extent do they develop integrated understanding of appropriate scientific ideas? and (2) When writing about new evidence, do these earlier experiences of writing explanations enable students to make use of new scientific ideas in more sophisticated ways? In other words, do earlier experiences allow students to know how to make use of their ideas in these new situations? The results indicated statistically significant effects. Through various iterations of the explanation students included richer discussion using appropriate scientific ideas. Students were also able to make better use of new knowledge in new situations.

The key characteristics of project-based learning: how teachers implement projects in K-12 science education

The aim of this multiple-case study was to research the key characteristics of project-based learning (PBL) and how teachers implement them within the context of science education. K-12 science teachers and their students’ videos, learning diaries and online questionnaire answers about their biology related PBL units, within the theme nature and environment, were analysed using deductive and inductive content analysis (n = 12 schools). The studied teachers are actively engaged in PBL as the schools had participated voluntarily in the international StarT programme of LUMA Centre Finland. The results indicate that PBL may specifically promote the use of collaboration, artefacts, technological tools, problem-centredness, and certain scientific practices, such as carrying out research, presenting results, and reflection within science education. However, it appeared that driving questions, learning goals set by students, students’ questions, the integrity of the project activities, and using the projects as a means to learn central content, may be more challenging to implement. Furthermore, although scientific practices had a strong role in the projects, it could not be defined how strongly student-led the inquiries were. The study also indicated that students and teachers may pay attention to different aspects of learning that happen through PBL. The results contribute towards a deeper understanding of the possibilities and challenges related to implementation of PBL and using scientific practices in classrooms. Furthermore, the results and the constructed framework of key characteristics can be useful in promoting research-based implementation and design of PBL science education, and in teacher training related to it.

Connecting student interests and questions with science learning goals through project-based storylines

In this conceptual paper, we describe the approach in storylines that builds on principles of project-based learning and focuses on supports for making science learning coherent from the students’ perspective. In storylines, students see their science work as addressing questions and problems their class has identified. We present design principles that guide the teaching and enactment of storyline units and explore the connections of these principles to ideas of project-based science. We illustrate how these design strategies are reflected in a high school biology unit co-developed by teachers and researchers. We present student artifacts that document the agency students take on in this work. We then summarize results from earlier studies examining students’ learning and perceptions of coherence of their learning experiences.

Beyond the basics: a detailed conceptual framework of integrated STEM

Given the large variation in conceptualizations and enactment of K− 12 integrated STEM, this paper puts forth a detailed conceptual framework for K− 12 integrated STEM education that can be used by researchers, educators, and curriculum developers as a common vision. Our framework builds upon the extant integrated STEM literature to describe seven central characteristics of integrated STEM: (a) centrality of engineering design, (b) driven by authentic problems, (c) context integration, (d) content integration, (e) STEM practices, (f) twenty-first century skills, and (g) informing students about STEM careers. Our integrated STEM framework is intended to provide more specific guidance to educators and support integrated STEM research, which has been impeded by the lack of a deep conceptualization of the characteristics of integrated STEM. The lack of a detailed integrated STEM framework thus far has prevented the field from systematically collecting data in classrooms to understand the nature and quality of integrated STEM instruction; this delays research related to the impact on student outcomes, including academic achievement and affect. With the framework presented here, we lay the groundwork for researchers to explore the impact of specific aspects of integrated STEM or the overall quality of integrated STEM instruction on student outcomes.

Contextualizing communities in an instructional improvement initiative: exploring STEM faculty engagement in teaching-related conversations

A frequently cited strategy for fostering science, technology, engineering, and mathematics (STEM) instructional improvements is creating communities where faculty can share and learn evidence-based teaching practices. Despite research-documented benefits, little is known about why (and with whom) faculty engage in teaching-related conversations, including those fostered by initiative communities. We explored how STEM faculty engage in teaching-related conversations, via analysis of faculty interviews and discussion networks, to identify factors potentially influencing teaching-related conversations over the life of an initiative. Our results suggest aspects that might inhibit STEM faculty from engaging in teaching-related conversations, including: 1) faculty members’ autonomy with teaching practices; 2) faculty members’ varied interests in teaching improvements; 3) varied degrees of support to engage in teaching-related conversations; and 4) a lack of inclusive and non-judgmental spaces to talk about teaching. We suggest that those fostering STEM faculty communities consider working with others across the institution to map the instructional improvement opportunities faculty may already take part in and attend to areas lacking support. Initiative leaders and designers should also elicit and build off faculty members’ teaching-related knowledge and concerns. We further suggest making conversational spaces inclusive and safe, to help faculty honestly share teaching-related challenges and insights. We recommend creating and fostering spaces that bring faculty together across department boundaries. Our study echoes prior research by drawing attention to administrative support for instructional improvement initiatives, which can foster and sustain opportunities for faculty to talk about teaching and learn instructional improvements.

Project-based learning in science-teacher pedagogical practicum: the role of emotional experiences in building preservice teachers’ competencies

The study investigated preservice teachers’ (PST) emotional experiences, teaching competencies, and the connection between the two over the course of a pedagogical practicum conducted using a project-based learning (PBL) approach. The study addressed the following research questions: (a) Which emotional experiences accompanied PSTs’ PBL-based pedagogical practicum?(b) Of the competencies for implementing PBL that the PSTs developed during the practicum, which did they consider using as part of their classroom practices in the future? (c) Is there a connection between PSTs’ emotional experiences and their self-reported competencies for implementing PBL in their classroom practices? Participants were 16 preservice teachers in their first year in the teacher-education program for teaching sciences. Data were collected from reflective reports, submitted at the end of the first and second semesters, thereby addressing the middle and final stages of the PBL-based practicum, and were analyzed using three complementary methodologies: content, linguistic, and statistical analyses. The findings indicate that, as portrayed by the participants, PSTs’ immersion in the PBL-based practicum was accompanied by both positive and negative emotional experiences. While immersed in the PBL practicum, the PSTs described themselves as developing various teaching competencies for implementing PBL in the classroom. It was also found that the positive emotional experiences outnumbered the negative, and this predominance was positively linked to the development of the PSTs’ competencies.

A close look at change: the role of an instructional-team community on an Instructor’s evolution during instructional reform

In transforming undergraduate STEM education, it is important to understand the personal and contextual factors that impact instructors’ reform efforts. In this study we explored an instructor’s drivers and motivators for change in perspectives and practice, with an emphasis on the impact of an internal community (her ‘instructional team’) comprised of a co-instructor, graduate teaching assistants, and several undergraduate learning assistants (LAs). Data were collected over two semesters through classroom observations, interviews, faculty learning community discussion recordings, and team email communications. We identified pedagogical discontentment as a primary initial trigger for the instructor’s engagement in instructional reform, guided by personal values and beliefs about student learning and the nature of her discipline. The instructional-team community, which was established during a period of instructional distress, provided 1) consistent support in instructional planning, implementation, assessment, and reflection processes, 2) unique access to different perspectives on the nuances of the teaching environment and student challenges, 3) increased space, time, and motivation for the instructor to more critically reflect on her teaching and engage in creative instructional design. This case illustrates the potential effects of instructional team-based communities on instructors as they work to improve their practice and reform their courses.

Promoting computational thinking through project-based learning

This paper introduces project-based learning (PBL) features for developing technological, curricular, and pedagogical supports to engage students in computational thinking (CT) through modeling. CT is recognized as the collection of approaches that involve people in computational problem solving. CT supports students in deconstructing and reformulating a phenomenon such that it can be resolved using an information-processing agent (human or machine) to reach a scientifically appropriate explanation of a phenomenon. PBL allows students to learn by doing, to apply ideas, figure out how phenomena occur and solve challenging, compelling and complex problems. In doing so, students take part in authentic science practices similar to those of professionals in science or engineering, such as computational thinking. This paper includes 1) CT and its associated aspects, 2) The foundation of PBL, 3) PBL design features to support CT through modeling, and 4) a curriculum example and associated student models to illustrate how particular design features can be used for developing high school physical science materials, such as an evaporative cooling unit to promote the teaching and learning of CT.

Graduate- and undergraduate-student perceptions of and preferences for teaching practices in STEM classrooms

Despite positive evidence for active learning (AL), lecturing dominates science, technology, engineering, and mathematics (STEM) higher education. Though instructors acknowledge AL to be valuable, many resist implementing AL techniques, citing an array of barriers including a perceived lack of student buy-in. However, few studies have explored student perceptions of specific AL teaching practices, particularly the perceptions of graduate students. We explored student-reported instructional strategies and student perceptions of and preferences for a variety of teaching practices in graduate and undergraduate classrooms across three STEM colleges at a large, public, research university. We found that both graduate and undergraduate students desired more time for AL and wanted less lecturing than they were currently experiencing. However, there was no single universally desired or undesired teaching practice, suggesting that a variety of AL teaching practices should be employed in both graduate and undergraduate courses.

Emotional experiences of secondary pre-service teachers conducting practical work in a science lab course: individual differences and prediction of teacher efficacy

The present study explored pre-service science teachers’ emotions during a semester-long laboratory science course. Emotions were measured with the experience sampling technique, which is a research method that facilitates the observation of emotional states over a long period. We studied the relationships between pre-service teachers’ emotional states (enjoyment, stress, and insecurity), self-efficacy traits and beliefs, and their momentary intentions to apply the experiment in later teaching. A total of N = 101 pre-service teachers completed a short, electronic questionnaire twice during each of the nine course sessions. Data analysis utilised random-slope multi-level models. Pre-service teachers’ emotions became more negative over time. In addition, emotional states accurately predicted teachers’ momentary intentions to use the experiment in the future. However, this relationship differed significantly for each course session and between teachers. Emotional states also predicted pre-service teachers’ habitual self-efficacy beliefs for teaching biology experiments with small but significant variances between teachers. The results indicate that emotions experienced during teacher education might influence the teacher students’ professional attitudes towards science teaching.