Enhancing Students’ Conceptual Understanding by Engaging Science Text with Reflective Writing as a Hermeneutical Circle

Students can have great difficulty reading scientific texts and trying to cope with the professor in the classroom. Part of the reason for students’ difficulties is that for a student taking a science gateway course the language, ontology and epistemology of science are akin to a foreign culture. There is thus an analogy between such a student and an anthropologist spending time among a native group in some remote part of the globe. This brings us naturally to the subject of hermeneutics. It is through language that we attempt to understand an alien culture. The hermeneutical circle involves the interplay between our construct of the unfamiliar with our own outlook that deepens with each pass. It can be argued that for novice students to acquire a full understanding of scientific texts, they also need to pursue a recurrent construction of their comprehension of scientific concepts. In this paper it is shown how an activity, reflective-writing, can enhance students’ understanding of concepts in their textbook by getting students to approach text in the manner of a hermeneutical circle. This is illustrated using studies made at three post-secondary institutions.     

Enabling Students to Develop a Scientific Mindset

This paper is centered on getting students to understand the nature of science (NOS) by considering historical material in relation to modern philosophers of science. This paper incorporates the methodology of contrasting cases in the calculus-based introductory physics course on optics and modern physics. Students study one philosopher all semester as a group project and report regularly on how their philosopher would view the subject matter of the course. Almost all of the students were able to argue successfully on the final examination about all three philosophers. Students become aware that the same textual material can be viewed in a variety of ways. The answers that students give about the NOS have become clearer at the end of the course.     

Developing Critical Thinking in Undergraduate Courses: A Philosophical Approach

This paper is centred on twentieth century philosophers of science. I will examine how they have influenced current physics educational research by others and myself. I will also examine how I have introduced a study of these philosophers in several courses including the calculus-based introductory physics course on optics and modern physics. Students study one philosopher all semester as a group project and report regularly on how their philosopher would view the subject matter of the course. As a consequence of this use of philosophers of science, the students seem to have made a marked improvement in their critical thinking skills and in their grasp of the underlying concepts of the subject matter of the courses.     

Teachers’ and pupils’ perceptions of science–technology learning environments

During recent decades, educational research has dealt with the contribution of the learning environment to the accomplishment of educational goals, such as improvement of academic achievement and motivation. In this research, an intervention program was implemented into the learning environment of science–technology classes at the junior high school level (Grades 7–9, 12–15 years old) in Israel. The intervention included a three-year workshop involving 224 hours each year. The teachers (N = 22) were required to reflect on their experiences using a portfolio that described their actual teaching experiences for relevant discussions at the workshop. Quantitative and qualitative tools were used to examine the teachers’ implementation of new teaching/learning and assessment methods or new subject matter, that were addressed by the workshop in their classes, and to identify learning environment characteristics and learning outcomes according to teachers’ perceptions. Differences were found between teachers’ and pupils’ perceptions of the impact of learning environment characteristics on learning outcomes.     

Sleep disturbances in adolescents with symptoms of attention-deficit/hyperactivity disorder

We evaluated 32 nonmedicated male adolescents diagnosed with attention-deficit/hyperactivity disorder (ADHD) in childhood, 35 male adolescents similarly diagnosed who were receiving methylphenidate (MPH), and 77 control boys. Both ADHD groups completed self-report questionnaires assessing sleep disturbances; weekday and holiday sleep duration; and symptoms of ADHD, anxiety, and depression. Parents and teachers rated the severity of the participants' ADHD. The control group completed self-report questionnaires assessing sleep disturbances. We found that nonmedicated participants and controls did not differ in the severity of sleep disturbance. In contrast, the medicated participants demonstrated a significantly greater severity of sleep disturbance compared with the nonmedicated participants and reported elevated levels of symptoms of ADHD, anxiety, and depression. Specific analyses showed that depressive symptoms contributed significantly to the degree of sleep disturbance when controlling for ADHD diagnosis and MPH treatment. These findings suggest that among adolescents with ADHD symptoms, the severity of symptoms of depression may contribute to the degree of sleep disturbance in addition to the effect of their primary disorder and MPH treatment.     

Workshop on Friction: Understanding and Addressing Students’ Difficulties in Learning Science Through a Hermeneutical Perspective

Hermeneutics is useful in science and science education by emphasizing the process of understanding. The purpose of this study was to construct a workshop based upon hermeneutical principles and to interpret students’ learning in the workshop through a hermeneutical perspective. When considering the history of Newtonian mechanics, it could be considered that there are two methods of approaching Newtonian mechanics. One method is called the ‘prediction approach’, and the other is called the ‘explanation approach’. The ‘prediction approach’ refers to the application of the principles of Newtonian mechanics. We commonly use the prediction approach because its logical process is natural to us. However, its use is correct only when a force, such as gravitation, is exactly known. On the other hand, the ‘explanation approach’ could be used when the nature of a force is not exactly known. In the workshop, students read a short text offering contradicting ideas about whether to analyze a friction situation using the explanation approach or the prediction approach. Twenty-two college students taking an upper-level mechanics course wrote their ideas about the text. The participants then discussed their ideas within six groups, each composed of three or four students. Through the group discussion, students were able to clarify their preconceptions about friction, and they responded to the group discussion positively. Students started to think about their learning from a holistic perspective. As students thought and discussed the friction problems in the manner of hermeneutical circles, they moved toward a better understanding of friction.     

The Need to Emphasize Epistemology in Teaching and Research

The views on epistemology by philosophers of science are developed through an historical lens. Enabling students to develop a scientific mindset is complicated by student’s views on the Nature of Science. Students need to appreciate the history of science and to contrast different frameworks. In order to do this, students have to be able to follow presentations in class and read their textbooks. Although individual words are understandable, the sentences appear to take the form of an unknown language. The solution utilized in this paper is to get students to approach their reading of their textbooks in the manner of the hermeneutical circle through an activity called Reflective Writing.     

On the Concept of Force: A Comment on Lopes Coelho

This article presents a supplement to Coelho’s excellent article concerning the definition of force by first defining mass and then momentum. Replacing force with the concept of a field is also briefly noted.     

Modelling energy transfers between systems to support energy knowledge in use

ABSTRACT

School instruction is critical for helping students use energy as a lens for making sense of phenomena, however, students often struggle to see the usefulness of energy analysis for interpreting the world around them. One reason for this may be an over-reliance on the idea of energy forms in introductory energy instruction, which may unintentionally suppress, rather than prompt, insights into how and why phenomena occur. We argue that an approach to energy instruction that emphasizes energy transfers between systems, and does not require the idea of energy forms, provides students with a more consistent and useful set of tools for interpreting phenomena. Such a perspective requires connecting the energy concept to the notion that fields, which mediate interaction-at-a-distance, are a real physical system that can transfer energy – an idea that is rarely presented in middle school science. We outline an instructional approach in which middle school students learn to interpret phenomena by modelling energy transfers between systems of interacting objects and fields. We argue that this approach presents a more physically accurate picture of energy, helps align energy instruction across disciplines, and supports students in seeing the value of energy as a lens for making sense of phenomena.