Individuals of all ages have misconceptions about phenomena of the natural and physical world. They may think, for example, that summer is hotter because the Earth is closer to the Sun, and it is colder in winter because the Earth is farther away from the Sun. This explanation is not compatible with the scientific explanation of the phenomenon. Scientific learning often implies the revision of naïve conceptions, or conceptual change, which is not a quick and easy process. Researchers have addressed the question of the nature of conceptual change in terms of what the acquisition of new science knowledge entails when students hold misconceptions and need to revise their mental representations. Various approaches have been proposed to account for the mechanisms that underlie conceptual change and to draw implications for teaching and learning processes. For some decades conceptual change was only examined from a purely cognitive perspective (“cold” conceptual change), while more recently motivational and emotional aspects (“warm” conceptual change) have received attention. Research findings indicate that individual differences in misconceived prior knowledge, along with differences in achievement goals, self-efficacy, interest, and epistemic beliefs, as well as differences in the emotions experienced in learning contexts, are all associated with conceptual change. More recently, research has challenged the idea that misconceptions disappear permanently after conceptual change has taken place. Previously acquired, incorrect information still competes with the newly acquired correct information. The executive function of inhibition seems to be involved when naïve and scientific conceptions co-exist in the learner’s memory and the latter is used to produce a correct answer. Further research is needed on the role of inhibitory control in relation to learning concepts and affective states during scientific learning.
P. Karen Murphy, Carla M. Firetto, Gwendolyn M. Lloyd, Liwei Wei, and Sara E. Baszczewski
Classroom discussions are a common pedagogical approach that involve verbal exchanges of information between teachers and students. Given their importance to teaching and learning, classroom discussions have been the focus of extensive curricular mandates and, to a lesser extent, research over the last several decades. In traditional classroom discussions, the teacher tends to be situated at the center of the discussion. This type of discussion model is commonly referred to as a transmissionary model, where the teacher transmits knowledge and understandings and often leads the discussion by posing factual questions and responding to students’ answers by giving evaluative feedback. However, productive classroom discussions are better characterized by a dialogic model with students at the center of the discussion. When students are encouraged to ask thoughtful questions, give reflective responses, and challenge each other using reasoned arguments within classroom discussions, they are more likely to become builders and owners of their knowledge. Indeed, productive classroom discussions tend to ignite students’ engagement, thinking, and understanding of knowledge across academic content areas. When adopting a dialogic model, classroom discussions can advance students’ learning by promoting their basic and high-level comprehension of literary text, reasoning, and argumentation during mathematical sense-making, scientific reasoning, and model building and even second-language proficiency and communicative competence. While the overarching aim of classroom discussions is to enhance student learning across content areas (e.g., language arts, mathematics, science, or second-language learning), the various roles that teachers assume in each of the content areas may have different emphases that align with various content learning expectations. Optimizing classroom discussions requires specific considerations of the content-focused goal, teacher knowledge of content and discourse orchestration, student instruction on classroom talk, and context of content learning. Importantly, the potential and promise of productive classroom discussions can be realized by supporting teachers’ content-specific discussion practices through sustained professional development and by supporting students through explicit instruction about discussion.
Emerging in the learning sciences field in the early 1990s, qualitative design-based research (DBR) is a relatively new methodological approach to social science and education research. As its name implies, DBR is focused on the design of educational innovations, and the testing of these innovations in the complex and interconnected venue of naturalistic settings. As such, DBR is an explicitly interventionist approach to conducting research, situating the researcher as a part of the complex ecology in which learning and educational innovation takes place. With this in mind, DBR is distinct from more traditional methodologies, including laboratory experiments, ethnographic research, and large-scale implementation. Rather, the goal of DBR is not to prove the merits of any particular intervention, or to reflect passively on a context in which learning occurs, but to examine the practical application of theories of learning themselves in specific, situated contexts. By designing purposeful, naturalistic, and sustainable educational ecologies, researchers can test, extend, or modify their theories and innovations based on their pragmatic viability. This process offers the prospect of generating theory-developing, contextualized knowledge claims that can complement the claims produced by other forms of research. Because of this interventionist, naturalistic stance, DBR has also been the subject of ongoing debate concerning the rigor of its methodology. In many ways, these debates obscure the varied ways DBR has been practiced, the varied types of questions being asked, and the theoretical breadth of researchers who practice DBR. With this in mind, DBR research may involve a diverse range of methods as researchers from a variety of intellectual traditions within the learning sciences and education research design pragmatic innovations based on their theories of learning, and document these complex ecologies using the methodologies and tools most applicable to their questions, focuses, and academic communities. DBR has gained increasing interest in recent years. While it remains a popular methodology for developmental and cognitive learning scientists seeking to explore theory in naturalistic settings, it has also grown in importance to cultural psychology and cultural studies researchers as a methodological approach that aligns in important ways with the participatory commitments of liberatory research. As such, internal tension within the DBR field has also emerged. Yet, though approaches vary, and have distinct genealogies and commitments, DBR might be seen as the broad methodological genre in which Change Laboratory, design-based implementation research (DBIR), social design-based experiments (SDBE), participatory design research (PDR), and research-practice partnerships might be categorized. These critically oriented iterations of DBR have important implications for educational research and educational innovation in historically marginalized settings and the Global South.
Garden-based education is a philosophical orientation to teaching and learning that uses gardens as the milieu for student engagement through meaningful and relevant curricular and instructional integration in schools. In addition to their direct academic appeal in raising test scores and grades, particularly in science, language arts, and math, gardens on educational campuses, spanning pre-school through high school, are also utilized by educators for a variety of other outcomes. These include motivational engagement; social, moral, and emotional development; strengthening of institutional and community bonds; vocational skills development; food literacy; healthy eating habits; and holistic growth of children and youth. Moreover, garden-based education shows promise as a tangible and pragmatic solution to address problems of disaffection and disengagement among youth that has resulted in a school dropout crisis in many places. While specific to higher education, farm-based education and agriculture-based education that focus on growing food have parallel agendas. The vast array of outcomes linked with garden-based education may seem impressive. However, systematic research studies of garden-based education across sites to measure educational impact are missing, largely due to their marginalized status and the decentralized and localized nature of program implementation and professional training. While the idea of including gardens on educational campuses to grow food or to serve as a means of outdoor and nature education is not new, since the 1990s, there has been a surge of interest in using garden-based education across countries and continents. With its accessibility on school grounds, garden-based education intersects with parallel movements such as outdoor education, place-based education, experiential education, nature-based education, environmental education, and sustainability education. Manifested in a variety of grassroots practices that include slow food, community supported agriculture, edible schoolyards, global roots, indigenous cultural gardens, learning gardens, lifelab, living classrooms, multicultural school gardens, urban harvest, and more, gardens will likely continue to be of significance in education as there are growing uncertainties globally about food security and health matters related to climate change. Despite high stakes, standardized tests, and accountability measures that pose challenges to educators and proponents of school gardens in public schools, research shows their promise as laboratories for innovation and academic learning. Garden-based education would benefit if informed by longitudinal and large-scale research studies that demonstrate instructional and curricular rigor and integration and impact on learning outcomes. Drawing on critical and posthumanist theories that question the nature of schooling, and explicitly addressing issues of race, class, and perspectives of marginalized and indigenous scholars and practitioners would bring further credence. Practice-embedded research and co-production of knowledge that accepts complexity and conjunctive thinking, while also addressing culturally responsive pedagogy across socio-economic status, would enhance the viability of this growing movement.