We Now Interrupt the Story 1 We Now Interrupt the Story: Mediating Student Learning Using Historical Stories DON METZ, University of Winnipeg, Winnipeg, Manitoba, Canada, email:d.metz@uwinnipeg.ca Abstract: Integrating history and philosophy of science and science teaching has been advocated by many educators for many years and there are indications that it would be welcomed by students. One means of integrated suggested is the use of historical science stories. While the historical story has some interesting potential we are advised to focus attention on some of the issues surrounding the implementation of science stories in the classroom. In this paper, I consider what HPS looks like in the implemented curriculum today. Further, I outline briefly some aspects of the literature on student comprehension and advance a form of science story intended to actively engage students in the implemented curriculum. Introduction A role for the history of science within the larger framework of science teaching has been advocated by many historians, philosophers of science, and educators. Almost twenty years ago Ian Winchester (1989) argued that “An education which fails to show the creativity necessary to frame scientific concepts is surely an inadequate education and almost certainly a misleading one” There are many reasons given for integrating history and philosophy of science (HPS) and science teaching. Historical perspectives naturally raise personal, ethical, sociological, philosophical and political concerns which tend to increase interest and motivation in students (Meyling, 1997; Metz, 2003) and provide a context to address science in a humanistic tradition (Stinner, 1995). Importantly, historical approaches may connect the development of individual thinking with the development of scientific ideas. Students’ ideas have also been demonstrated to parallel historical concepts (Wandersee, 1990). Moreover, Matthews (1989) has suggested that appreciating where great minds had difficulty is a potential comfort to students unsure and afraid to express their own viewpoints and allows students to locate their concepts within an intellectual tradition (Matthews, 1994). Monk and Osborne (1997) have argued that the historical approach to the learning of scientific concepts should help students because their acceptance or opposition to scientific concepts is often for the same reasons as the original scientists. Matthews (1994) also reminds us that the history of science can suggest questions and experiments that promote appropriate conceptual change in students. “Knowledge of the slow and difficult path traversed in the historical development of particular sciences can assist teachers planning the organization of a program, the choice of experiments and activities, and their responses to classroom questions and puzzles”. Thus, the historical perspective can be deemed useful not only in the learning process but in the teaching process. Klassen (2006) agrees, arguing that a historical perspective helps Ninth International History, Philosophy and Science Teaching Conference June 24 - 28, 2007, University of Calgary, Calgary, Canada We Now Interrupt the Story 2 to uncover the vitality of investigation and creative invention that is lacking in school science. Consequently, in this paper, I aim to look at some of the ways the historical perspective can influence science teaching and provide some means for mediating student learning in science. In any examination of the teaching process it is prudent to consider the intended curriculum and then more practically, the implemented curriculum. The intended curriculum is the curriculum mandated by schools, school jurisdictions, and governments. The implemented curriculum is the actual curriculum delivered in the classroom by the teacher. Research has shown that the intended curriculum and the implemented curriculum are not always congruent. In recent years many reforms have been enacted resulting in a number of international, national, and local curriculum frameworks and documents available to teachers. In many of these documents history and philosophy of science is addressed and in some cases assumes a prominent role. The influential Science for All Americans (AAAS, 1989) assigns the foremost position in the document - chapter 1 - to the Nature of Science and includes a complete chapter on historical perspectives recognizing that “episodes in the history of the scientific endeavour are of surpassing significance to our cultural heritage”. Several other countries have also aligned with this view (McComas & Olson, 1999) profiling science more as a humanistic activity in contrast to a compilation of unrelated scientific facts and concepts. However as Matthews (1998) ardently noted, many of these HPS intentions form a host of “opportunities lost”. For example, he argues that while there are many laudable statements in standards documents, the model lessons that are outlined in the curriculum framework contain no historical or cultural components. We must give these curriculum documents due credit for enabling the integration of HPS into our science curriculum and work further to design approaches that assist a more widespread implementation of such a perspective in a liberal tradition. To begin, I consider what HPS might look like in the implemented curriculum today and propose science stories as a means to integrate HPS and science teaching. Further, I outline briefly some aspects of the literature on student comprehension and advance a form of science story intended to actively engage students in the implemented curriculum. HPS in the Science Classroom Today The most influential resource in the implemented curriculum today is arguably the textbook (Schmidt et. al, 1998). Indeed, Yore (1991) claims that most teachers use the science textbook most of the time. As a resource, science textbooks tend to be compendiums of factual information, or as Schwab (1962) noted, “a rhetoric of conclusions”. Textbooks also tend to have a user-unfriendly style, often with more new vocabulary than a course in a second language (Holiday, 1991) and a high level of readability (Morrow, 1995). Morrow also points out that the approach to science learning most consistent with textbook driven instruction is to accumulate factual knowledge and Ninth International History, Philosophy and Science Teaching Conference June 24 - 28, 2007, University of Calgary, Calgary, Canada We Now Interrupt the Story 3 that “Conventional science instruction with science texts only has resulted in low motivation to participate in science”. Winchester (2006) notes that a peculiarity of science teaching today is to teach from a single textbook rather than to use many books and many thinkers. He contrasts the schools of Athens with modern instruction. In the Greek tradition problems were approached in context with the history of the problem considered first. He concludes that “As a consequence most textbooks, and especially scientific textbooks, are mere summaries of results completely without context. And these context free results are usually supplemented by context free problems. The problems are usually such as would never appear spontaneously as the sort of question or problem that would arise in the mind of a student interested in the subject in question. Winchester (2006) More specifically, Rodriguez and Niaz (2004) examined numerous textbooks for their HPS approach to teaching atomic structure and found that only rarely do we find an adequate reflection of the historical case. Their results illustrate that physics textbooks do not generally include a history and philosophy of science perspective. Typically, most textbooks assign historical facts and anecdotes in footnotes or sidebars and most science stories that are represented are of the “heroic” type (Milne, 1998). As Levere (2006) notes “Science writers today often give history a pro forma acknowledgment and then go on to ignore it”. Why science textbooks represent HPS so poorly is an open question. It may be that popular textbooks are simply “copied” and all textbooks become homogenous. It may also be that science teachers do not demand or use HPS in their classroom. How might textbooks portray the HPS? If not textbooks, what kinds of resources should teachers develop to supplement their instruction with HPS and importantly, what do their students do? Many educators have argued for the use of narratives – science stories – as a means of addressing HPS in the science classroom. Tao (2003) reminds us that “every piece of scientific knowledge, and the way it has been constructed and validated, is associated with a human story in which there are actors and events as the plot to account for that knowledge is pursued” (Tao, 2003) Hefner and Lewis (1995) argue that the linking of the disciplines of literature and science should be natural. The narrative, in particular the story form, has been advocated as a means to provide this link (Metz et. al, 2006, Norris et. al, 2005, Millar & Osborne, 1998, Solomon, 1992). The narrative can be used to encourage a personal engagement with scientists and their science (Martin & Brouwer, 1991), to facilitate the making of scientific ideas more coherent, memorable, and meaningful (Millar and Osborne, 1998), Ninth International History, Philosophy and Science Teaching Conference June 24 - 28, 2007, University of Calgary, Calgary, Canada We Now Interrupt the Story 4 as an explanatory device (Norris et. al, 2005), to address the significance of discovery (Myers, 1990) and to increase the plausibility of an argument (Voss et al. 1999). While the story form has some interesting potential we are advised, given our experience with curriculum outcomes and implementation of HPS to mark our intentions of the story form with implementation concerns. Consequently, lest we miss Matthews’ warning of “opportunities lost”, some additional attention needs to be placed on the implementation of the story form in the classroom. What are its best practices, what does the research tell us, and in terms of promoting an active learning environment - what do students do? What Does Research Say? Scientific literacy has been described as the ability to locate and comprehend scientific information (Holliday et. al, 1994). Therefore, an important component of scientific literacy must be reading and comprehending scientific text (Trowbridge & Bybee, 1996) as reading becomes a primary source of scientific knowledge for most people (Shepardson 1997). Consequently, any consideration of implementing science stories in the classroom directs us to consider what research says about reading and comprehension. Armbruster (1993) reminds us that the same skills that make good scientists such as engaging prior knowledge, evaluating understanding, deciding on the importance of information, making inferences and drawing conclusions, are the same skills that make good readers. The implementation of the science story in the classroom inevitably leads us to consider several salient aspects of reading comprehension across the curriculum in the content areas. Learning from textual materials is not a one-way path of information from text to reader. Reading comprehension is a complex process which involves knowledge, inferential and evaluative thinking skills, experience, and teaching (Fielding & Pearson, 1994). A strong relationship has been established between prior knowledge and reading comprehension (Fielding & Pearson, 1994) and linking the context of the text with existing knowledge structures (Kintsch 1989). Reading involves complex interactions between the reader’s mind and the text (Holliday et al. 1994) and novices find this complex interaction difficult (Alexander & Jetton 2000). Thus, reading comprehension strategies should become an essential component in any instruction involving reading. Textual materials can be presented to students in three forms, procedural, expository, and narrative. Procedural text is used to convey a step by step process to achieve a specific task. In science teaching we find procedural text used extensively in laboratory manuals to give instructions for practical activities. Expository text is used to develop an argument or to convey information directly (Iser, 1980). In the narrative form the strict connectability of expository text is replaced by blanks and the reader must produce coherence in the text by imagination and interaction with the narrative. (Norris et al. 2005). Generally, students have more difficulty with expository text (Saenz & Fuchs 2002) while narrative text is read faster and tends to be more interesting for students Ninth International History, Philosophy and Science Teaching Conference June 24 - 28, 2007, University of Calgary, Calgary, Canada We Now Interrupt the Story 5 (Graesser 1981). Egan (1989) claims that information presented to learners in narrative format is more easily stored in and retrieved from memory. Reading alone does not guarantee success in student comprehension. Philips and Norris (1999) found that students who read scientific stories in the newspaper deferred to authority in their written reports and attributed a higher degree of certainty to their views. Canter (2003) found that narrative elements can also influence understanding and that the the logic of a narrative may not be the only basis for judging its plausibility. Phillips also found that students inferential abilities were weak (Phillips, 2002). “once we venture past rote learning, literal interpretation of texts, and locating information, students will require additional literacy competence and the instruction that fosters it no matter what the genre” (p 558,cited from Norris et. al, 2005). Brill, Falk, and Yarden (2004) studied the reading strategies of two high school students using primary materials in biology. They argued that exposure to the primary materials would provide a context for the research questions, authentic connections to scientific methodology, and that students could identify with the quest of the researchers reporting their work. Students read original materials and answered questions which were intended “to create a kind of discourse between the students and the article”. Brill et al. found that students had difficulties with unfamiliar scientific language and models, contradictions with prior knowledge and the text style. Additionally, the researchers found that students mediated their problems by: Connecting to prior knowledge. Using illustrations Repeated reading. Making predictions. Using added explanations Ignoring technical terms Declaring miscomprehension. Asking the expert Brill et al. also suggested that students passed through two stages in the learning process “Initial reading where the readers felt they fully understood the article and a second stage where the readers focussed on their misunderstandings attempting to mediate the misunderstood details” (p. 506). They concluded that mere reading was not enough to foster deep understanding. One strategy that they developed involved student-generated questions and an anticipatory guide of the following stages of research. My brief consideration of the literature on comprehension highlights several aspects of science stories that may impact learning strategies in the classroom. Ninth International History, Philosophy and Science Teaching Conference June 24 - 28, 2007, University of Calgary, Calgary, Canada We Now Interrupt the Story 6 Reading alone is not enough to stimulate deeper understanding. Students must be engaged in idea generating activities. Strong connections to science concepts require different text styles. Novices especially need to move between text written for direction (procedural), text written for clarity (expository), and text written for interpretation (narrative). Expert facilitation is required. Original materials may provide a contextual setting for inquiry. More research is necessary to determine how students mediate comprehension problems in the content area – specifically in secondary school science. However, historical stories alone may not be the answer. The students in Tobias’ study (1990) suggest stories from the history of science need be more than a form of relief from the standard lecture and they looked for materials that they could creatively engage them with the story. One possible strategy for these students could be the interrupted story form. The Interrupted Story Form One interesting approach to engaging storytelling is the ‘‘punctuated’’ or interrupted story form (Roach & Wandersee 1993). In the interrupted story form, a story is broken down into smaller vignettes from which students have the opportunity to make inferences and predictions. Roach (1995) also describes an extension of the interrupted story as the interactive historical vignettes (IHV). IHVs are fictional stories based on historical episodes in a scientist’s life. The vignettes are used to promote discussion, especially to promote an understanding of the nature of science. My preference is to broaden the view of the story form to Herrnstein Smith’s (1981) description of story as “Someone telling someone that something happened”. In our case, someone (the teacher) is “telling” someone else (the student) about something (a historical episode). My intention is to expand upon the telling aspect of story to focus a little more, in an educational sense, on the receiver – the student. What are they doing? This is the interactive part of the storytelling whereby the reader constructs deeper meaning through active engagement with the text. In the simplest sense narrative can be presented in three stages, a beginning, a middle, and an end. Ball (1985) presents the narrative structure as a possibility, and event, and a resolution whereas Egan (1986) describes the stages as expectation, elaboration and compilation. There are many possibilities and each one should be assessed on its own merits. In the interrupted story, these stages are set out as character events, situations, problems, imbalances, discrepant events, confrontations, Ninth International History, Philosophy and Science Teaching Conference June 24 - 28, 2007, University of Calgary, Calgary, Canada We Now Interrupt the Story 7 complications, dead ends, or setbacks. However each narration connects to an active engagement stage designed to mediate deeper understanding. The mediation may include such attributes as reflection, anticipation, predictions, inferences, comparisons, contrast, experimentation, or demonstration. There are many ways that an interrupted story may unfold. For example, all of the stages may be contained within one vignette which acts as a door opener (Kubli, 2005) to a related scientific experiment. At the conclusion of the experiment there is a reflection/feedback loop to the vignette. Another possibility is to interrupt the story at each stage. For my example, I’ve chosen problem, complication, and resolution as the stages of my story (figure 1). Each stage contains its own story and is interrupted with a stage of student engagement. To present an example of an interrupted story, I will outline one of Benjamin Thompson’s - also known as Count Rumford - experiments on heat which can easily be adapted to the classroom. The case study is summarized in table 1. The first narrative is a brief biography of Rumford and establishes the context of the investigation. Rumford was an “Indiana Jones” kind of guy who led an intriguing life as a soldier, scientist, and spy. Students find the story quite entertaining and the narrative is intended to establish a narrative appetite while setting the scene for the practical exercise to follow by raising the problem Rumford faced to efficiently clothe his military in Bavaria. To make better uniforms, Rumford was interested in determining what materials afforded the best insulating protection. At this point students are engaged in an activity to advance their own ideas, propose an experiment, and draw the experimental apparatus to complete the investigation. The second narrative is an excerpt from Rumford’s report of his experiments in the Philosophical Transactions of the Royal Society read February 2, 1804. In this investigation on heat, Rumford built and described in detail a simple set of containers he used to measure the time it would take the container to cool ten degrees. He compared various materials, such as Irish linen and wool, to a standard uncovered container (“naked” in his terminology). Students read his account and then compare and contrast their design and drawings to Rumford’s depictions. Invariably many ideas of the students are comparable to Rumford’s and a procedure is written to complete the experiments as Rumford did in his lab. In the classroom representation of his experiment, two ordinary soup cans, one naked and the other covered in nylon are cut from women’s hosiery. Students are asked to predict how long it takes for each can, naked or covered, to cool ten degrees. Students’ predictions are remarkably consistent as they expect the covered can to cool much slower than the naked can. Upon doing the experiment they are surprised that the can dressed in nylon cools faster. At this time the third narrative, which is a later excerpt from Rumford’s report, is unveiled and students are surprised to find that their results are identical to Rumford’s data, the covered can does indeed cool faster than the “naked” can! At this time, hypotheses are reconsidered and modified and these ideas are compared with Rumford’s scientific explanation from his report. Ninth International History, Philosophy and Science Teaching Conference June 24 - 28, 2007, University of Calgary, Calgary, Canada We Now Interrupt the Story 8 Some Concluding Remarks Contrary to the typical textbook approach, students continually generate their own ideas, design and write experimental procedure as they alternate between the narratives and their investigations (figure 2). As they interact with the narrative throughout the investigation students repeatedly address nature of science questions which arise naturally from the narrative. Students also find it remarkably rewarding that they have similar ideas, design, drawings, and conclusions of the original scientist. As we continue to use science story in the classroom additional efforts need to be directed toward understanding narrative, how research can inform us in domains such as reading comprehension, and we need to further develop materials that students can use to creatively interact with the story. Ninth International History, Philosophy and Science Teaching Conference June 24 - 28, 2007, University of Calgary, Calgary, Canada We Now Interrupt the Story 9 Table 1 Stages of the Historical Narrative Historical Representation Narrative Part 1 Problem Rumford’s biography and the problem of clothing the military Student Activity In your group, devise an experiment to compare the ability of various materials to keep an object warm. Carefully describe your experiment and sketch your proposed apparatus on one page in your notebook. Narrative Part 2 Complication Read the first excerpt from Rumford’s “An Enquiry concerning the Nature of Heat, and the Mode of its Communication” published in the Royal Transactions in 1804. Rumford’s description of his experiment and apparatus. Performance of Rumford’s experiment. Narrative Part 3 Resolution Analysis and Interpretation of Data Rumford’s explanation of the insulating capabilities of air. Using Rumford’s notes, write out an experimental procedure for his investigation with the “naked” and “clothed” cans. Record your experimental predictions, expectations, and procedure. Compare your experimental results to Rumford’s results. How does Rumford account for the discrepant results? Scientific Explanation Ninth International History, Philosophy and Science Teaching Conference June 24 - 28, 2007, University of Calgary, Calgary, Canada We Now Interrupt the Story 10 Figure 1 Problem reflect Engagement anticipate Complication predict compare Engagement Resolution Ninth International History, Philosophy and Science Teaching Conference June 24 - 28, 2007, University of Calgary, Calgary, Canada We Now Interrupt the Story 11 Figure 2 Clothing the military questions, design activity Rumford’s experimental design predict compare Performance of experiment Results and explanation Ninth International History, Philosophy and Science Teaching Conference June 24 - 28, 2007, University of Calgary, Calgary, Canada reflect anticipate We Now Interrupt the Story 12 References Alexander, P. A. And Jetton, T. L:. 2000, Learning from text: a multidimensional and developmental perspective. In R. Barr (Ed.) Handbook of Reading Research (London: Lawrence Erlbaum Associates), 285–310. 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