Gregory Light

Identifying Atomic Structure as a Threshold Concept: Student mental models and troublesomeness

Atomic theory or the nature of matter is a principal concept in science and science education. This has, however, been complicated by the difficulty students have in learning the concept and the subsequent construction of many alternative models. To understand better the conceptual barriers to learning atomic structure, this study explores the troublesome nature of this fundamental scientific concept. In order to illustrate the distinction of student understanding by threshold barriers, this study chose three particularly high‐achieving students from an original interview sample of 20 students who were selected from an introductory college chemistry course. The pre‐course and post‐course interview responses were examined and compared in detail. This study considers the concepts of ‘probability’ and ‘energy quantization’ to both describe the structure of the threshold of understanding students’ need to negotiate in their construction of the target model of atomic structure. In this respect, this study suggests atomic structure as a possible threshold concept for further study in science. Identifying the nature and structure of the threshold of understanding confronting students, and analyzing the troublesomeness of atomic structure, provides valuable information for understanding student learning difficulties, and insight into how they may be addressed.

Assessment Beyond Performance Phenomenography in Educational Evaluation

Increasing calls for accountability in education have promoted improvements in quantitative evaluation approaches that measure student performance; however, this has often been to the detriment of qualitative approaches, reducing the richness of educational evaluation as an enterprise. In this article the authors assert that it is not merely performance but also how learners think and how their thinking changes that we should be measuring in educational program evaluation. They describe a mixed-methods evaluation model based on the qualitative method phenomenography that can be used to evaluate how learners think in multiple contexts, from skills training to employee development to higher education, and how their thinking may change over time. They then describe two evaluation studies making use of this approach and provide suggestions for evaluators interested in using the phenomenographic model.

Developing an instrument to characterise peer‐led groups in collaborative learning environments: assessing problem‐solving approach and group interaction

Collaborative learning is being used extensively by educators at all levels. Peer‐led team learning in a version of collaborative learning that has shown consistent success in science, technology, engineering and mathematics disciplines. Using a multi‐phase research study we describe the development of an observation instrument that can be used to assess peer‐led group learning. This paper illustrates the development of a classification system for peer‐led learning groups and an instrument based on this classification system. The instrument evaluates small learning groups on two important aspects of group learning: problem solving approach and group interaction style. We provide evidence of the factor structure of the two dimensions using both exploratory and confirmatory factor analysis. We also provide information about the reliability of the two scales as measured by the Cronbachs alpha coefficient. Data from a large peer‐led learning programme was used to conduct the factor analysis. Results from the factor analysis confirmed that the instrument is actually measuring two key characteristics of small learning groups: problem solving approach and group interaction style, characteristics that have been linked to effective functioning of the group and to the student learning outcomes. This instrument may be particularly appealing to practitioners (faculty members, those running small‐group learning programmes, etc.) because it is easy to use and it does not require extensive time for analysis.

Reliance to Independence: Approaches to Learning in Peer-Led Undergraduate Science, Technology, Engineering, and Mathematics Workshops.

The phenomenographic ‘approach to learning’ literature holds that students’ approaches to learning can change depending on the learning context. This implies that, by modifying the learning context, teachers can change the way students approach learning, and this can ultimately lead to a change in learning outcomes. The study presented here examines one effort to modify a science, technology, engineering, and mathematics (STEM) learning context and the approaches to learning taken by students experiencing this environment. Using a qualitative, phenomenographic approach, we interviewed 45 students in a STEM peer‐led workshop programme at a large US research university. Similar to previous approach‐to‐learning research, the study identified three approaches students took to learning in the peer‐led programme, in which they focused on simply making it through the course, engaging more meaningfully with the material, and gaining better control over their own learning.

Small-Group Learning in Undergraduate STEM Disciplines: Effect of Group Type on Student Achievement.

Small-group learning in the science, technology, engineering, and mathematics (STEM) disciplines has been widely studied, and it is clear that this method offers many benefits to students. Less attention has been paid to the ways in which small learning groups differ from one another, and how these differences may affect student learning and experiential outcomes. This study uses a previously validated instrument to categorize, or type, small peer-led STEM learning groups, and then to investigate the impact of group characteristics on student outcomes. Six hundred and forty-six students were observed over 2 academic quarters. During the fall quarter, no relationship was found between group type and student course grade. During the winter quarter, statistically significant differences in student grade were found among group types. We posit that group type may not make a difference in grade early in the year because the groups are not yet functioning optimally, so that group “noise”, such as facilitator inexperience or student discomfort, may drown out the effects of group type on student performance.

Entering the Community of Practitioners: A Science Research Workshop Model

Bernhard Streitwieser is a senior research associate at Northwestern University’s Searle Center for Teaching Excellence, a teaching associate in the School of Education and Social Policy, and a former lecturer in the German department. Greg Light is the director of the Searle Center and an associate professor in the School of Education and Social Policy. He has taught postgraduate courses in higher and professional education and consulted across the higher and professional education sector in the UK, the US, and Canada. Pilar Pazos is an assistant professor in the Department of Engineering Management & Systems Engineering at Old Dominion University. Previously she held a joint position at Northwestern’s Searle Center and the VaNTH (Vanderbilt, Northeastern, Texas, Harvard/MIT) Engineering Research Center.

The Grand Promise of Global Citizenship Through Study Abroad

Today we live in an age of mass marketing and educational commerce where international education has become a big business, full of promise and reward. It is not surprising that in this spirit many colleges, universities and third party providers that promote study abroad characterize it as essentially guaranteeing “Global Citizenship,” a very attractive credential to students and parents alike.