Educational Challenges of Molecular Life Science: Characteristics and Implications for Education and Research

Molecular life science is one of the fastest-growing fields of scientific and technical innovation, and biotechnology has profound effects on many aspects of daily life—often with deep, ethical dimensions. At the same time, the content is inherently complex, highly abstract, and deeply rooted in diverse disciplines ranging from “pure sciences,” such as math, chemistry, and physics, through “applied sciences,” such as medicine and agriculture, to subjects that are traditionally within the remit of humanities, notably philosophy and ethics. Together, these features pose diverse, important, and exciting challenges for tomorrow''s teachers and educational establishments. With backgrounds in molecular life science research and secondary life science teaching, we (Tibell and Rundgren, respectively) bring different experiences, perspectives, concerns, and awareness of these issues. Taking the nature of the discipline as a starting point, we highlight important facets of molecular life science that are both characteristic of the domain and challenging for learning and education. Of these challenges, we focus most detail on content, reasoning difficulties, and communication issues. We also discuss implications for education research and teaching in the molecular life sciences.     

Swedish PE teachers struggle with assessment in a criterion-referenced grading system

In the field of education, the international trend is to turn to criterion-referenced grading in the hope of achieving accountable and consistent grades. Despite a national criterion-referenced grading system emphasising knowledge as the only base for grading, Swedish physical education (PE) grades have been shown to value non-knowledge factors, such as students’ characteristics and behaviour. In 2011, a new national curriculum was implemented which attempts to deal with the problem by prescribing specific knowledge requirements with a clear progression as the only basis for different grades. The aim of the present study is to explore the impact of the new knowledge requirements on what teachers consider important when assigning grades. It is also to discuss what non-knowledge-related aspects (if any) teachers continue to look for and why these seem to remain resilient to the reform. The Repertory Grid technique was employed to interview the teachers before (2009) and after the implementation (2013). During the interviews, the grading of 45 students was discussed, which generated 125 constructs. After the implementation, there was a near doubling of knowledge constructs, half as many motivation constructs and an almost total elimination of constructs based on confidence and social skills. While motivational factors were still considered valuable for the award of a higher grade, clear criteria seemed to be important, but too limited for the teachers’ needs. In order to understand the persistence of motivational factors, we discuss the results in relation to Bernstein’s interrelated message systems of curriculum, pedagogy and assessment. We emphasise the need to discuss how valid grades can be achieved and, at the same time, give value to the regulative discourse in order to realise the overarching national goals of values and norms in education and PE.     

Relational engagement: Proportional reasoning with bilingual Latino/a students

In this paper, we explored how engagement developed over time during a proportional reasoning unit for a group of US bilingual Latino/a students, with particular attention to aspects of social and cultural activity that supported students’ engagement. Our findings suggest that student mathematical engagement developed primarily as a relational process characterized by students’ social relations across time, their understandings about their relationships with mathematics, and the important relations emerging across proportional reasoning ideas.     

Student Learning about Biomolecular Self-Assembly Using Two Different External Representations

Self-assembly is the fundamental but counterintuitive principle that explains how ordered biomolecular complexes form spontaneously in the cell. This study investigated the impact of using two external representations of virus self-assembly, an interactive tangible three-dimensional model and a static two-dimensional image, on student learning about the process of self-assembly in a group exercise. A conceptual analysis of self-assembly into a set of facets was performed to support study design and analysis. Written responses were collected in a pretest/posttest experimental design with 32 Swedish university students. A quantitative analysis of close-ended items indicated that the students improved their scores between pretest and posttest, with no significant difference between the conditions (tangible model/image). A qualitative analysis of an open-ended item indicated students were unfamiliar with self-assembly prior to the study. Students in the tangible model condition used the facets of self-assembly in their open-ended posttest responses more frequently than students in the image condition. In particular, it appears that the dynamic properties of the tangible model may support student understanding of self-assembly in terms of the random and reversible nature of molecular interactions. A tentative difference was observed in response complexity, with more multifaceted responses in the tangible model condition.     

Why become a teacher? Student teachers’ perceptions of the teaching profession and motives for career choice

The aim of the study is to discursively identify student teachers’ perceptions of the teaching profession early in their education and their motives for this career choice. Students wrote a letter sharing thoughts on why they want to become a teacher, how they regard the teaching profession and if someone inspired them in their career choice. The empirical data consists of 259 student texts from three Swedish teacher education programmes. The study employed a qualitative method denoting different categorizations compared to previous studies, emphasising the idea of multiple motives for career choice and the link to student teachers’ evolving pedagogical identity. Major differences can be distinguished among the programmes, emphasising different main motives and shifting incipient pedagogic identities. The results indicate the value of organising teacher education programmes drawing on multiple motives, which is expected to contribute positively to completion of teacher education and teacher retention in future profession.     

Promoting basic arithmetic competence in early school years–using a response to intervention model

This study investigated whether mathematics education based on a multi-tiered response to intervention (RTI) model can support students' arithmetic competence in primary schools in Sweden. The intent was to identify and support students at risk of failure. In this study, 113 students participated in the intervention, and 30 students participated in the control group. Both groups were followed from Grade 1 to the end of Grade 2 and compared. During the first semester in Grade 1, all students were taught basic addition and subtraction with explicit instructions in Tier 1. Those who did not respond to Tier 1 after one semester were provided support within Tier 2 during the second semester. The same was repeated in grade 2 and the students that did not respond to Tier 2 were supported within Tier 3. At the end of Grade 2, students in the intervention group performed significantly higher on the basic arithmetic competence in the number range 1–9 than the control group. No significant difference was found in a test measuring basic arithmetic competence in the number range 10–19. This study shows that using multi-tiered RTI might be sufficient to identify and support students at risk in early arithmetic competence.     

How critical thinking,multicultural education and teacher qualification affect anti-immigrant attitudes

Previous studies identify a relationship between education and anti-immigrant attitudes. There is, however, uncertainty regarding the underlying explanations linking education to attitudes. In this article, we examine whether a relationship exists between exposure to teaching about critical thinking as well as multiculturalism (measured as religions/cultures as well as xenophobia/racism), and anti-immigrant attitudes among adolescents. In addition, we examine whether teacher qualification matters for attitudes. The analysis is based on survey data collected from high school students in Sweden. The results show an association between exposure to teaching about critical thinking as well as multiculturalism (both indicators) and anti-immigrant attitudes among students, i.e. higher exposure is related to lower levels of anti-immigrant attitudes. However, we find that teaching about xenophobia/ racism affects attitudes, but not when simultaneously controlling for teaching about critical thinking and religions/cultures. In terms of teacher qualification, we find that students in schools with a high proportion of certified teachers tend to have lower levels of anti-immigrant attitudes.     

Lower Secondary Students’ Views in Astrobiology

Astrobiology is, on a profound level, about whether life exists outside of the planet Earth. The question of existence of life elsewhere in the universe has been of interest to many societies throughout history. Recently, the research area of astrobiology has grown at a fast rate, mainly due to the development of observational methods, and the media is frequently reporting on new research findings. International surveys show that astrobiology questions are among those that interest young people the most. The popularity of astrobiology and the way it captures much science content makes it an interesting area for science teaching. However, there is very little research directly focused upon students’ views in astrobiology. The study reported in this paper draws from the answers of 186 Swedish lower secondary students (16 years old) to a questionnaire, with closed and open-ended questions regarding their views of issues in astrobiology. The study was guided by the worldview theory (Cobern 1991; Cobern, Science Education 80(5):579–610, 1996; Cobern, Science and Education 9:219–246, 2000). The results show that even though basic reasoning in astrobiology is known by a majority of the students, there is a considerable number of students, for whom this is not the case. Furthermore, it was found that for all questions, there are students answering in different ways when asked to describe their own view and the view they associate with science researchers. The implications of the study for further research and for the teaching of astrobiology in science class are discussed.     

Zooming in Time—Exploring Students’ Interpretations of a Dynamic Tree of Life

Journal of Science Education and Technology - Central to evolution is the concept of a common ancestry from which all life has emerged over immense time scales, but learning and teaching temporal...     

CRITICAL FEATURES OF VISUALIZATIONS OF TRANSPORT THROUGH THE CELL MEMBRANE—AN EMPIRICAL STUDY OF UPPER SECONDARY AND TERTIARY STUDENTS’ MEANING-MAKING OF A STILL IMAGE AND AN ANIMATION

Images, diagrams, and other forms of visualization are playing increasingly important roles in molecular life science teaching and research, both for conveying information and as conceptual tools, transforming the way we think about the events and processes the subject covers. This study examines how upper secondary and tertiary students interpret visualizations of transport through the cell membrane in the form of a still image and an animation. Twenty upper secondary and five tertiary students were interviewed. In addition, 31 university students participated in a group discussion and answered a questionnaire regarding the animation. A model, based on variation theory, was then tested as a tool for distinguishing between what is expected to be learned, what is present in the visualizations, and what is actually learned by the students. Three critical features of the ability to visualize biomolecular processes were identified from the students’ interpretations of the animation: the complexity of biomolecular processes, the dynamic and random nature of biomolecular interactions, and extrapolation between 2D and 3D. The results of this study support the use of multiple representations to achieve different learning goals.