Teachers' pedagogical content knowledge (PCK) is highly important for effective design and implementation of school teaching. Thus, the current status, development and efficacy of this knowledge, its relationships with teaching quality parameters, and its impact on students' learning processes and success, require rigorous examination. Thoroughly validated, objective and reliable test instruments that are highly sensitive to changes in variables of proven knowledge‐related relevance in teacher education are also required. Previous attempts to design such instruments for assessing science teachers' PCK have largely focused on mathematical content. Therefore, here we present an instrument (the pedagogical content knowledge in biology inventory, PCK‐IBI), based on conceptualizations of teachers' professional competence, for assessing secondary school pre‐service biology teachers' PCK. In a series of three evaluations and refinements it was tested with samples of N = 274 and N = 432 German pre‐service as well as one sample of n = 65 German pre‐service and n = 35 German in‐service biology teachers. Item analysis, scale analysis and empirically obtained indicators of validity suggest that the final 34‐item‐version of the PCK‐IBI is unidimensional, provides objective test scores and enables reliable and valid registration of pre‐service biology teachers' PCK. Thus, hypotheses regarding specific aspects of the model on which the PCK‐IBI's construction is based on are empirically supported. The results of our study provide empirical support for the instrument's potential utility.

Introduction: Teachers need research competence to reflect on their teaching and to interpret and implement research-based recommendations. However, many pre-service teachers have critical attitudes toward research, little motivation to engage in research, and comparatively low knowledge of research methods and thereby consequently indicating a low research competence. Flexible online modules in university teaching could be a promising approach to address these issues. Online modules can potentially promote self-determined motivation, but should be sufficiently structured to support learners’ need for competence.Methods: We designed two learning environments with different types of structure: a non-restrictive structured environment and a restrictive structured environment. A total of N = 108 pre-service biology teachers were randomly assigned to the two learning environments.Results and discussion: Contrary to our assumption, the restrictive type of structure of the learning environment did not lead to a higher perception of competence. This might be a consequence of external pressure, for example, the examination at the end of the course. Regarding pre-service teachers’ research competence, we found a decrease in the affective-motivational domain and an increase in the cognitive domain in both learning environments. These results suggest that fostering pre-service teachers’ research competence should focus on the affective-motivational domain. In order to positively affect this domain, care must be taken to ensure that structuring elements are not experienced as control and that given choices are meaningful to students.

Background: Natural selection is a core principle of evolution. Understanding natural selection enables students to think about the evolution and the variability of life. Despite its great importance, understanding natural selection is challenging for students. This is evident in the phenomenon of contextual reasoning, showing that students can often explain natural selection in one context (e.g., trait gain) but not in another (e.g., trait loss). The study pursues the following aims: First, to examine the link between contextual reasoning and situated learning. Second, to explore whether different instructional strategies differ in their associated cognitive load. Third, to investigate whether clarifying common misconceptions about natural selection (no vs. yes) is an effective strategy to regular instructions when aiming to increase key concepts and reduce misconceptions. Fourth, to exploratively examine the effectiveness of different instructional strategies. Method: In a 2 × 2 factorial intervention study with a total of N = 373 secondary school students, we varied the instructional material of a 90-min intervention in terms of the evolutionary context (trait gain vs. trait loss) and the availability of additional support in the form of a clarification of misconceptions (no vs. yes). We measured students’ cognitive load immediately after instruction and assessed their ability to reason about natural selection (i.e., use of key concepts and misconceptions) later. Results: We documented low knowledge about evolution in the pre-test and persisting misconceptions in the post-test. The results showed that the intervention context of trait loss elicited a higher intrinsic and extraneous cognitive load than trait gain. Moreover, when the clarification of misconceptions is analyzed in connection to the intervention context, it reveals a potential for reducing misconceptions in some contexts. Students who have learned in trait gain contexts with a clarification used significantly fewer misconceptions in later reasoning than students who learned in trait gain contexts without a clarification of misconceptions. Conclusion: Our study creates new insights into learning about natural selection by outlining the complex interplay between situated learning, cognitive load, clarification of misconceptions, and contextual reasoning. Additionally, it advises researchers and educators on potential instructional strategies.

The promotion of Climate Literacy is a central concern of our time. To achieve this ability, one can draw on different content areas. One possible area is Nature-Based Solutions (NBS), such as Vertical Greening Systems (VGS), and their effectiveness in mitigating climate change. However, VGS is not yet an established topic in environmental education, even if the pro-environmental effectiveness of VGS has been proven from a scientific point of view and this topic is close to everyday life. To facilitate the transfer of knowledge from research to school, this paper presents an example of a possible procedure. This procedure starts with a narrative review of the scientific literature on VGS. Then, the main results of this review are related to the Sustainable Development Goals, Climate Literacy, and general educational goals to capture its educational relevance. Finally, a flow chart for a teaching sequence is developed, with the phase sequence derived from the performed narrative review. Thus, a parallelism between the structure of a scientific review and an action-oriented environmental education becomes visible. To what extent this parallelization may be generalized, and whether teaching based on it is effective, will have to be tested.