Understanding teachers’ conceptions surrounding integrated STEM education is vital to the successful implementation of integrated STEM curricula in K-12 classrooms. Of particular interest is understanding how teachers conceptualize the role of the STEM disciplines within their integrated STEM teaching. Further, despite knowing that content-agnostic characteristics of integrated STEM education are important, little is known about how teachers conceptualize the real-world problems, 21st century skills, and the promotion of STEM careers in their integrated STEM instruction. This study used an exploratory case study design to investigate conceptions of 19 K-12 science teachers after participating in an integrated STEM-focused professional development and implementing integrated STEM lessons into their classrooms. Our findings show that all teacher participants viewed STEM education from an integrative perspective that fosters the development of 21st century skills, using real-world problems to motivate students. Our findings also reveal that teachers have varying ideas related to the STEM disciplines within integrated STEM instruction, which could assist teacher educators in preparing high-quality professional development experiences. Findings related to real-world problems, 21st century skills, and STEM careers provide a window into how to best support teachers to include these characteristics into their teaching more explicitly.

National reform documents are calling for an upsurge in the development of integrated science, technology, engineering, and mathematics (STEM) curricula to simultaneously increase the number of kindergarten through Grade 12 (K–12) students involved in STEM-related coursework and increase the competitiveness of the United States in the STEM-related workforce. With this emphasis on the development of STEM curricula, there is also a need to improve the understanding of education professionals as to what teachers’ conceptions of integrated STEM currently are. This study explored how teachers’ conceptions of integrated STEM developed over the course of a 3-week-long summer professional development whose focus was on bringing integrated STEM education to science classrooms. Our findings revealed a total of 8 distinct conceptions as represented by teachers’ drawn models that shifted in usage over the course of the 3 weeks. Overall, these conceptions started as simple models that grew to more complex models. These findings provide insight into (a) how K–12 science teachers conceptualize STEM integration and (b) how, if at all, these conceptions change over the course of a professional development program. Our findings also indicate the sensitive nature of conceptions of STEM integration that can be influenced by professional development experiences.

Current reforms in K-12 STEM education call for integration between science, technology, engineering, and mathematics (STEM). Such integration of STEM disciplines at the K-12 level offers students an opportunity to experience learning in real-world, multidisciplinary contexts; however, there is little reported research about teachers’ experiences in engaging in integrated STEM instruction. The purpose of this phenomenological multiple case study is to understand nine science teachers’ first-time experiences in implementing integrated STEM curricular units in their middle school physical science classrooms. This study draws upon both classroom implementation data and teacher reflective interviews to illustrate different degrees of integrated STEM instruction and to understand teachers’ challenges and successes with these varying approaches. Our results indicate three distinct cases of integration within our sample that represent low, medium, and high degrees of STEM integration throughout curriculum implementations. Interviews with teachers from each case revealed three themes that varied across teachers’ experiences: the nature of integration, choosing between science and engineering, and student engagement and motivation. Teachers in all three cases were challenged to make explicit connections between science, engineering, and mathematics while simultaneously maintaining a motivating and engaging context for their students throughout their instruction. Further, it appears that the degree of STEM integration that occurs in instruction may be related to teachers’ ability to make explicit connections between the disciplines. The work presented here informs educational researchers, policy makers, and K-12 STEM educators that there are several challenges when it comes to implementing new STEM initiatives in K-12 education. Although this work is limited to middle school physical science teachers’ experiences with first-time STEM instruction, many of the identified themes are not content-specific; therefore, this work may shed light on general struggles that are common to educators who are integrating across content disciplines for the first time.

As more and more science teachers in the United States are now expected to implement STEM education in their classrooms, it is important to understand how teachers conceptualise STEM education. This information can then be used to provide teachers with meaningful support as they move towards implementation of STEM education. Understanding that not all representations of STEM are equal, this mixed-methods study used a phenomenographic lens to examine science teachers’ perceptions of eight different models of STEM education through photo elicitation interviews. Part of this was done though an activity in which teachers ranked different models of STEM education by arranging them in a continuum. Findings reveal that teachers are most drawn to models of STEM education that show STEM beyond school settings and that include clear intersections between the disciplines represented in the acronym. This study sheds light on the importance of creating a shared conception of STEM education in order to have productive conversations across various stakeholders within the STEM education community.

It is difficult to ignore the increased use of technological innovations in today’s world, which has led to various calls for the integration of engineering into K-12 science standards. The need to understand how engineering is currently being brought to science classrooms is apparent and necessary in order to address these calls for integration. This multiphase, mixed-methods study investigated the classroom practices and beliefs of high school physical science teachers following an intensive professional development on physics and engineering integration. Classroom observations showed that teachers new to incorporating engineering into their physical science classrooms often struggled to maintain focus on physics concepts, focusing instead on the development of the ‘‘soft skills’’ needed by engineers, such as teamwork or communication. Interviews and surveys further revealed the beliefs of these teachers when considering integrating engineering into physics lessons. Teachers placed student engagement and enjoyment high on their priority list when considering integrating engineering into their classroom. In addition to this somewhat driving force, three main components were identified as important when considering engineering in physical science classrooms: providing hands-on experiences for students, allowing students to apply physics concepts, and developing general problem solving skills that students can take to the ‘‘real-world.’’ While teachers identified both physics and engineering goals for their students, they realized that their students learned more about how to be an engineer. Results from this study provide insight on obstacles current science teachers face as they begin to add engineering to their classrooms. Overall, teachers are motivated to bring engineering to their classrooms as a result of student enjoyment of engineering activities. This may drive the creation of teacher goals for students and determine how emphasis is placed on different goals during these engineering design challenges. Implications for this study include ascertaining knowledge about teacher beliefs prior to professional development, fostering discussions about what integration looks like in the classroom, and modeling the creation of instructional goals that include both physics and engineering content.