Volume 39, Issue 2 p. 338-360
Original Article
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Theoretical triangulation as an approach for revealing the complexity of a classroom discussion

Jannet van Drie

Corresponding Author

Jannet van Drie

University of Amsterdam, the Netherlands

Corresponding author. Research Institute Child Development and Education, University of Amsterdam, Spinozastraat 55, 1018 HJ, Amsterdam, The Netherlands. Email: [email protected]Search for more papers by this author
Rijkje Dekker

Rijkje Dekker

University of Amsterdam, the Netherlands

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First published: 15 January 2013
Citations: 11

Abstract

In this paper we explore the value of theoretical triangulation as a methodological approach for the analysis of classroom interaction. We analyze an excerpt of a whole-class discussion in history from three theoretical perspectives: interactivity of the discourse, conceptual level raising and historical reasoning. We conclude that using theoretical triangulation enables us to relate the perspectives of the teacher, the students and the domain to each other, which provides us with deeper insight into the complex phenomenon of classroom interaction. The analyses reveal the complexities the teacher faces when trying to elicit and promote collaborative knowledge construction and the dilemma of promoting student participation, on the one hand, and deepening the quality of reasoning, on the other.

Introduction

Socio-constructivist theories of learning highlight the importance of dialogue for learning (e.g. Wertsch, 1991; Brown & Campione, 1996; Mercer & Littleton, 2007). Knowledge is co-constructed through language, for example by sharing ideas, building on each other's ideas, constructive discussion and questioning (van Boxtel, 2004). Teachers have an important role in the development of children's knowledge, understanding and use of domain-specific discourse. Concepts such as, for example, ‘guided participation’ (Rogoff, 1990), ‘the guided construction of knowledge’ (Mercer, 1995) and ‘dialogic teaching’ (Alexander, 2008) relate to this idea. Fostering collaborative knowledge construction puts specific demands on the orchestration of the whole-class discussion. Various authors have argued that the more traditional discourse pattern, in which the teacher holds the authority and does most of the talking and students only give short answers that are evaluated by the teacher (the Initiation-Response-Evaluation (IRE) pattern: see Mehan, 1979), is not sufficient for collaborative knowledge construction in whole-class discussions as it tends to minimize the role of the student in the process of constructing knowledge (e.g. Elbers & Streefland, 2000; Cazden, 2001; Chin 2006). Instead, a more continuous line of discourse should be created. According to Kumpulainen et al. (2009) a key question for many researchers is how to understand the complexity of classroom interactions. Although they believe that great accomplishments have already been achieved in this field, they argue that more work is needed in order to gain a more coherent understanding of how different methodologies ‘illuminate learning and education as a social process’ (p. 1). There is a need to demonstrate how various methodologies ‘work’ in actual studies of classroom interaction. Various methodologies are already being used, deriving from different theoretical backgrounds and each highlighting different aspects of classroom interaction (see, for example, Kumpulainen et al., 2009). In addition, others have pointed out that in order to grasp the complexity of classroom interaction researchers should combine various methods to analyze classroom talk, for example by combining qualitative and quantitative methods (e.g. Strijbos & Fischer, 2007; Mercer, 2010). The aim of this paper is to contribute to this discussion by describing how we used theoretical triangulation as a method to describe the quality of a whole-class discussion in the domain of history. We first elaborate on triangulation as an approach for analysing classroom interaction. Next, we describe the three perspectives we used in our analysis, after which we describe the method used and the results of our analysis. Subsequently, we discuss our findings.

Triangulation as a method for studying classroom interaction

The challenge in qualitative research is to secure objectivity by enhancing reliability and validity. Onwuegbuzie and Leech (2007) describe a list of 24 techniques for assessing the truth value of qualitative research, one of which is triangulation. Based on descriptions by other authors, they describe triangulation as ‘the use of multiple and different methods, investigators, sources and theories to obtain corroborating evidence’ (p. 239). Generally speaking, triangulation thus aims at verifying findings by showing that independent measures agree or do not contradict them (Miles & Huberman, 1984). Triangulation is also used in the social sciences to get a more complete view of the phenomenon studied (Meijer, Verloop, & Beijaard, 2002). Several types of triangulation can be distinguished in qualitative research: triangulation by data source, method, researcher, theory and by data type (Miles & Huberman, 1984; Thurmond, 2001). Triangulation can be a useful approach to gain further insight into the complex phenomenon of classroom interaction. Strijbos and Fischer (2007) indicate that current research in collaborative learning increasingly applies mixed-method strategies, for example triangulation procedures to integrate results derived from different data sources. An example of triangulation by data source can be found in Strijbos et al. (2007).

In this study the focus is on theoretical triangulation. Theoretical triangulation involves the use of multiple perspectives when examining a phenomenon (Denzin, 1970). Although analysing classroom interaction from various perspectives is not a completely new approach, the term theoretical triangulation is hardly used. For example, van Boxtel (2004) combines three different theoretical perspectives when analysing interaction between pairs of students working in a physics task. The analysis combines a domain-specific perspective, an elaboration perspective and a co-construction perspective. Van Boxtel argues that when analysing peer interaction, a more inclusive framework that combines different perspectives should be used to direct attention to different aspects of the quality of peer interaction. Other researchers, such as Clarke (2001) and Schoenfeld (2008), have approached multiple analysis by using several researchers with expertise in a wide variety of perspectives to conduct their singular analysis on a common body of data. An interesting example is the multiple analysis of Dekker et al. (2004). The three researchers analyzed a 13-minute episode of two third-grade students solving a mathematical problem together in a classroom. The researchers first created a solid common ground as to what was happening in the episode and then each analyzed the episode from their own theoretical perspective: mathematical level raising, division of time and social interaction. At the end they discussed their findings and integrated them.

Using theoretical triangulation in the study of classroom interaction can provide us with a more complete view of it and grounds the analysis of classroom interaction more deeply in methods for qualitative research.

Stimulating collaborative reasoning in whole-class discussions

In this study we apply theoretical triangulation on a whole-class discussion in history. In their review on research in history education, VanSledright and Limón (2006) point out that in daily history classrooms it is often the teacher who does most of the talking and teacher talk, such as lecturing and story-telling, often dominates. Also in whole-class discussions, which are quite commonly used in history education, it is often the teacher who dominates the conversation (at least in history classrooms in our country, the Netherlands). Whole-class discussions can be used in the instruction phase when constructing an historical explanation or narrative (cf. Leinhardt, 1993; Halldén, 1994), but also during the debriefing phase, in which earlier (group) work is discussed. Our focus here is on the latter since whole-class discussions in the debriefing phase are especially suited for collaborative knowledge construction. When students have prepared their work individually or in groups, it enables them to participate in and make substantive contributions to the discussion. The whole-class discussion can support processes of consensus building, of making connections between the individual and the community and of transforming student findings into cultural norms (Enyedy, 2003) and may contribute to attaining a higher level of reasoning (Hogan et al., 2000; van Boxtel, 2002).

An important characteristic of whole-class discussions in which knowledge is coconstructed is that students are actively involved in the disciplinary discourse and make progression in it (Engle & Conant, 2002; emphasis added). These three notions underlie the theoretical approaches we adopted in our analysis of classroom discourse using theoretical triangulation: interactivity of the discourse, conceptual level raising and historical reasoning. Each of these approaches highlights different aspects of the discourse: the role of the teacher, of the students and of the domain, respectively. Below we elaborate on each of these perspectives.

Enhancing a highly interactive discourse

The main role of the teacher in whole-class discussions that reflect collaborative reasoning is to elicit and sustain an ongoing dialogue. Kovalainen et al. (2002) identified four modes of teacher participation during whole-class discussions in a community-of-learners classroom that support classroom interaction: (1) an evocative mode (e.g. asking stimulating questions, evoking initiation and confirmation), (2) a facilitative mode (e.g. re-voicing questions and interpretations, drawing together perspectives and initiations), (3) a collective mode (e.g. promoting collective responsibility, orchestrating discourse turns) and (4) an appreciative mode (e.g. valuing the contributions of the participants). Chin (2006) pointed out that important factors in eliciting knowledge construction are the kind of questions the teacher asks and the feedback that is provided. The purpose of the question is to elicit students' thinking, to make it explicit and open for further discussion. Feedback should function as a starting point for a new or continuous line of reasoning instead of evaluating the response against scientific or cultural norms. Scott et al. (2006) showed that in doing so a new interaction pattern (compared to the IRE- pattern) emerges, which takes the form of I-R-P-R-P-R, where P stands for prompt. The function of the prompt is then to have students explicate and elaborate their ideas. In this respect, Kovalainen and Kumpulainen (2009) make a distinction between eight types of interaction sequences, depending on who initiated (teacher or student) and how many participate (student only, teacher only, bilateral or multilateral).

Eliciting the kind of student discourse described above is not an easy task and it sets high demands on the knowledge of the teacher with regard to reasoning in the specific discipline and the difficulties students face while reasoning. The teacher should know how knowledge in the discipline is organized, recognize misconceptions and recognize opportunities for learning (cf. Cazden, 2001). Teachers encounter various problems and dilemmas, such as how to involve as many students as possible, what kind of questions promote further learning, allocation of turns and how to respond to wrong answers (cf. Cazden, 2001; Alexander, 2008). From this, it follows that a teacher has to make many decisions on how to respond to students' contributions and that different responses may have a different effect on eliciting a continuous line of reasoning. In reaction to IRE sequences, Schoenfeld (2002) identified a classroom routine that has led to a practical scheme with which interactive classroom discussions can be analyzed and different classroom discussions can be compared. The routine has as its function the elicitation and elaboration of student ideas and makes explicit the choices a teacher makes during a whole-class discussion. Examples of such choices are whether issues need to be pursued, whether clarification, expansion or reframing is necessary or whether more discussion is needed.

Conceptual level raising

When focusing on the discourse, it is important to elaborate on what kind of interactions contribute to progression and learning. Insights gained from research on student-student interaction may be helpful here. Van Boxtel (2004), for example, points out that interaction processes that contribute to learning are characterized by elaborations, questioning and solving cognitive conflicts. Dekker and Elshout-Mohr (1998, 2004) developed a process model in which they discerned three kinds of activities that may contribute to conceptual level raising in individuals during collaborative learning, namely (1) key activities, (2) regulating activities and (3) mental or cognitive activities (see Appendix C). Key activities for level raising are: to tell or show one's own work, to explain, to justify and to reconstruct one's work. Telling or showing one's own work makes one aware of one's own work (mental activity), explaining makes one think about and reflect on it and justifying makes one check it. If checking reveals sincere weaknesses, one can start to criticize one's own work and eventually reconstruct it. Reconstruction may lead to level raising. The authors point out that it may be hard to fulfil key activities for oneself and that such activities can come more naturally if there are other persons to regulate them. They discern three regulating activities: (1) asking to show one's work (2) to explain it and (3) to criticize it. Although the process model was originally developed for group work, a teacher (instead of another student) can also fulfil this regulating role.

Historical reasoning

The last perspective included in our analysis is related to the disciplinary discourse and focuses on historical reasoning. When analysing interaction in the classroom it is important to include the specific features of the domain (van Boxtel, 2004; van Drie & van Boxtel, 2008). What kind of reasoning do we have in mind when talking about the domain of history? Recent views on history learning stress the importance of students learning to reason with facts and stories from the past and learning to create new stories (cf. Perfetti et al., 1995; van Drie & van Boxtel, 2008). Historical reasoning is therefore an important goal of history education. Van Drie and van Boxtel (2008) describe historical reasoning as an activity in which a person organizes information about the past in order to describe, compare and/or explain historical phenomena. Based upon literature research and analysis of students' historical reasoning, they identified six components of historical reasoning, namely asking historical questions, use of sources, contextualization, argumentation, use of substantive concepts and use of meta-concepts. Historical reasoning in whole-class settings then implies that not only the teacher, but also the students contribute to the description, comparison and explanation of historical phenomena, and in doing so make use of the several components of historical reasoning (van Drie & van Boxtel, 2011).

Aims and research question

In this paper we demonstrate how we used theoretical triangulation as an approach to analyze a whole-class discussion in history. With this study we aim to contribute to the ongoing search for methodologies that may help us understand the complexity of classroom interactions. In our analysis we incorporate three different theoretical perspectives based on our view that in whole-class discussions students should be actively involved in the disciplinary discourse and make progression in it. These perspectives are: interactivity of the discourse, conceptual level raising and historical reasoning, thus including the teacher and the students, as well as the domain at hand. By using theoretical triangulation we aim to get a more complete view of the quality of the whole-class discussion. The research question that guides this study is: How can the quality of a whole-class discussion in history be described when using theoretical triangulation?

Methods

We describe how we applied theoretical triangulation in the analysis of a small fragment of a whole-class discussion in history. This fragment derived from an earlier study on whole-class discussions in history conducted in the Netherlands (van Drie & van Boxtel, 2011). In the Netherlands, whole-class discussions are commonly used in history classrooms, however, the teacher often dominates the discussion. The aim of that particular study therefore was to describe how several teachers, without any specific training, orchestrated a whole-class discussion after group work and whether and how they elicited collaborative reasoning in history. The teacher in the example used here is an experienced history teacher who teaches a class comprising of 23 students (15–16 years of age, pre-university level). The observed lesson was one in a series of lessons on the Second World War in the Netherlands. The assignment (based on Havekes 'at al., 2005: see Appendix A) comprised small-group work in which the students were asked to classify the acts of six non-fictional persons on a quadrant with two dimensions: collaboration1 versus resistance and personal interest versus common good. During the whole-class discussion afterwards, the outcomes of the group work were discussed. We focus on one part of the discussion, which is related to the person of Pip (a description of this character can also be found in Appendix A). This particular fragment was chosen because it puzzled us. At first sight the students seemed actively engaged in the discussion, but what could be said about the quality of the interaction?

What could be said of students' historical reasoning, and did the students make progression in their reasoning? And what was the role of the teacher in orchestrating this discussion? This particular fragment, which is shown in Figure 1, took 3 minutes and 15 seconds. It contains 23 speaking turns, 11 from the teacher and 12 from the students. Of the 23 students in this class, 7 participated here.

Details are in the caption following the image
Excerpt of the whole-class discussion

As mentioned before, we adopted three theoretical perspectives. First, in order to gain insight into how the teacher elicits interactive discourse and the decisions she makes, we used Schoenfeld's (2002) flowchart of highly interactive routines (see Appendix B). Each of the rectangles in Appendix B, labelled [A1] through [A7], represents a possible action by the teacher. Each of the diamonds, labelled [D1] through [D5], represents a point at which the teacher makes a decision. In [A1], the teacher introduces a topic. In [A2] the teacher invites comments. There is always the possibility that a student's response will raise issues beyond those intended by the teacher. If they do ([D1] = ‘yes’), the teacher must decide whether these issues should be pursued ([D2]). If these issues need to be pursued the teacher works through them ([A3]) with his class, if not he seeks closure ([A4]). In the case of the student's comment being directly responsive to the teacher's question ([D1] = ‘no’), the teacher uses that response for the classroom conversation. First, the teacher decides (at [D3]) whether a clarification of the student's comment is needed. If so, the teacher may ask the student to say more or elaborate on what he/she has said ([A5]). When the student's comment is sufficiently clarified, the teacher (at [D4]) decides whether it would be useful to expand on the student's comment. If so, the teacher highlights particular aspects of the discussion ([A6]) and then decides (at [D5]) whether circumstances warrant a continuation of the discussion. If so, the teacher invites further comment ([A2]). If not, the teacher moves to the next item on his agenda ([A7]).

The second perspective describes students' contributions in relation to level raising, for which we used the process model for interaction and level raising developed by Dekker and Elshout-Mohr (1998, 2004). They modelled processes of student conceptual level raising and thereby created a framework for helping students during the process. Three types of activities are discerned: key activities, regulating activities and mental or cognitive activities. The process model can be found in Appendix C. It should be stated here that the model was developed for interaction between students and the process of level raising they can regulate for each other. During a whole-class discussion the interaction is asymmetric, because of the authority of the teacher. This may have some implications for the role of the teacher as regulator of level raising of the students.

The third perspective aims to describe the discussion in terms of domain-specific reasoning. We used the framework for historical reasoning of van Drie and van Boxtel (2008). This framework aims at describing students' historical reasoning in different tasks and settings and distinguishes six components of historical reasoning, which were mentioned earlier.

To secure reliability, all three analyses were conducted by the two authors independently, after which the coding was discussed until agreement was reached. In addition, all three analyses were checked with a third researcher who is specialized in the particular focus of the specific analysis.

Below we subsequently describe the outcomes of each analysis, after which we integrate the different analyses and illustrate the value of theoretical triangulation by discussing two examples.

Results

Perspective 1: interactive routines

To gain insight into the decisions the teacher takes in orchestrating this wholeclass discussion, we used Schoenfeld's (2002) flowchart of highly interactive routines. We discerned seven passes, which we describe below.

First pass: lines 1–7a

This first pass is shown in Figure 2. The teacher gave context and background for the topic before the students started to work in small groups. Now it is time to start the discussion about the results. In line 1 the teacher asks Marian for the result on Pip (step [A2]). In lines 2 and 4 Marian tells where her small group has placed Pip in the diagram. Her answer is on target ([D1] = no), but needs explanation ([D3] = yes). In line 5 the teacher asks for an explanation (step [A5]). In line 6 Marian gives an explanation, which needs no further explanation according to the teacher ([D3] = no). Expansion or reframing is not at stake ([D4] = no), but more discussion on the subject is needed ([D5] = yes).

Details are in the caption following the image
First Pass: Lines 1–7a

Second pass: lines 7b–9a

In line 7b the teacher invites students to come up with different answers (step [A2], see Figure 3). In line 8 Cees puts forward a different answer and adds an explanation for the difference. The answer is on target ([D1] = no) and the teacher decides that no further explanation is needed ([D3] = no). But she does want more discussion on the subject ([D5] = yes).

Details are in the caption following the image
Second Pass: Lines 7b–9a

Third pass: lines 9b–11a

In line 9b the teacher invites students to react to Cees' answer (step [A2], see Figure 4). In line 10 Sarah reacts to the place of Pip in relation to the dimension of personal interest. The teacher wants to discuss the place in relation to the other dimension, so the response raises another issue ([D1] = yes), but the teacher doesn't want to pursue this now ([D2] = no) and in line 11a she seeks closure by bringing the discussion back to the other dimension of collaboration and resistance (step [A3]). She wants more discussion about that choice ([D5] = yes).

Details are in the caption following the image
Third Pass: Lines 9b–11a

Fourth pass: lines 11b–12

In line 11b the teacher asks Cees to confirm his answer, which she rephrases (step [A2]). In line 12 Cees makes his answer a little less firm, but still calls Pip's act resistance. So his answer does not raise another issue ([D1] = no), does not need clarification ([D3] = no) and no reframing ([D4] = no). But the teacher does want more discussion on the subject ([D5] = yes), (the same as the second pass, see Figure 3).

Fifth pass: lines 13–15a

In line 13 the teacher invites Sarah to express her disagreement (step [A2]). In line 14 Sarah does this and explains the answer of her small group, but her answer is also a little less firm. However, the answer does not raise another issue ([D1] = no) and no clarification is needed ([D3] = no). But the teacher wants the disagreement to be discussed ([D5] = yes) (the same as the second pass, see Figure 3).

Sixth pass: lines 15b–17

In line 15 the teacher asks Wout for his reaction (step [A2], see Figure 5). In line 16 Wout gives his reaction, which is not very clear. But it doesn't raise other issues ([D1] = no). And the teacher decides not to ask for clarification ([D3] = no). Instead she decides that a reframing of the question she wants discussed would be useful ([D4] = yes). So she reframes it in line 17 (step [A6] and [D5] = yes), which is, at the same time, the start of the final pass (step [A2]).

Details are in the caption following the image
Sixth Pass: Lines 15b–17

Seventh pass: lines 18–23

In lines 18–20 Erin, Monica and Anke discuss the question posed by the teacher. Their arguments do not raise other issues ([D1] = no, see Figure 6). But some clarification is needed ([D3] = yes), so in line 21 the teacher stimulates further reasoning (step [A5]). In line 22 Anke gives a clear explanation ([D3] = no). The teacher uses that explanation to expand on the issue ([D4] = yes). In line 23 she highlights particular aspects of the discussion, on which there is also a debate between historians (step [A6]). She decides that the question has been sufficiently discussed ([D5]) and moves on to the next subject (step [A7]).

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Seventh Pass: Lines 18–23

This analysis makes clear that the teacher keeps the discussion firmly focused on the subject (several straightforward passes). She gives different students the opportunity to present their ideas. As they have worked in small groups, these ideas are clearly formulated. She only has to ask for a clarification once (first pass). When there is a ‘wrong’ answer the teacher chooses not to evaluate it herself, so no IRE. Instead she brings the answer into the discussion (second pass). She keeps the discussion on the topic. When, according to the teacher, the question related to the ‘wrong’ answer needs to be clarified and discussed, she interrupts and reframes the question (sixth pass). Then the discussion is freer and more between the students. The teacher pushes a bit towards a conclusion and gives a small concluding lecture at the end (seventh pass).

Perspective 2: conceptual level raising

The second perspective focuses on conceptual level raising. In the second column in Figure 7 the line-by-line analysis with the process model is presented.

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A line-by-line analysis with the process model and the framework for analysing historical reasoning.

The teacher asks several students to show and explain their work and these students do so. She deliberately gives the opportunity to show different work, which is stimulating for discussion and the process of level raising. The work shown in relation to the personal-interest axis is more or less the same. The differences are in relation to the resistance axis and the concept of collaboration. When Cees shows work that the teacher does not agree with, she does not criticize the work, but invites other students to react. She seems aware that her own evaluation would stop the discussion. That is a difference with the interaction as described in the process model. The role of criticism by fellow students is crucial for justifying. However, when a teacher gives criticism, students tend to accept this criticism without justifying because of her authority. A way out is for the teacher to organize criticism between students, and that is what she does when inviting other students to give their comments. In the discussion some students do criticize the work of others, but the key activity of justifying hardly occurs. That has to do with the fact that there is no clear norm on which to check the work. The students cannot decide whether their work is good or not. So level raising stops here, although the students feel the criticism of the teacher and start reconstructing their work a little. But it is not after trial and error in justifying, which is necessary for conceptual level raising. Eventually the teacher brings in a norm, which makes justifying possible, and she reconstructs the ‘wrong’ work of Cees and his small group herself. But it is doubtful if this will lead to level raising in the students.

Perspective 3: historical reasoning

The third perspective relates to the domain under discussion and the historical reasoning that takes place. Considering the goals of this particular task, the components use of substantive concepts (in particular the concepts resistance, collaboration, personal interest, and common good) and argumentation are most central. Although in history students often back their claims with evidence from historical sources, this is not the case here, since there are no sources included in this task. The only ‘evidence’ the students can use are the short descriptions of the people. Underlying this assignment is the role of empathy. Students have to place themselves in situations like that of Pip, and try to make sense of the choices made and evaluate these choices in terms of concepts, such as collaboration and resistance. The line-to-line analysis on historical reasoning is presented in Figure 7, third column.

The analysis shows that the following components of historical reasoning are present in this fragment: asking historical questions; argumentation; and use of substantive concepts. Not present in this fragment are the components: use of historical sources, which was expected since no sources are included in this task; contextualizing, by situating the acts of this person in a broader historical context or making direct references to dates, events or developments characteristic of that historical period; and the explicit use of meta-concepts (e.g. cause, change, argument pro, argument contra, fact). This fragment shows a lot of argumentation—students present their different points of view, provide arguments for them (by themselves, or in response to the teacher) and discuss them. The process of argumentation and the use of concepts seem closely intertwined. In their reasoning, the students make explicit use of the central substantive concepts (with the exception of ‘common good’, which all seem to agree does not apply to Pip) and a new concept is brought in (passive resistance, line 8). However, these concepts are not explicitly explained or defined here. The arguments used are often loosely based on the short description included in the task; the students do not seem to make use of their more general knowledge on this topic. The particular case of Pip is not set in the broader context of the Second World War, or related to more general issues such as why people joined the Dutch National Socialistic Party (NSB) (cf. component of contextualization). This fragment also shows the importance of the asking historical questions component, which can function as an ‘engine’ of historical reasoning (Logtenberg, van Boxtel, & van Hout-Wolters, 2011). In this example it is the teacher who raises the questions: more general questions (e.g. lines 5 and 7b), by which she elicits student reasoning, and more historical questions. In line 17 she asks whether cancelling one's membership of the National Socialistic Party is an act of resistance. By asking this question the teacher focuses the attention on the concept of resistance and brings the discussion to a more general level. Consequently, this question elicits extended student reasoning.

Combining the three perspectives: two examples

From the different analyses it becomes clear that the teacher manages to lead a whole-class discussion, giving opportunities to different students to contribute and to show and explain their work, which reveals argumentation intertwined with historical concepts. The three different perspectives used in the analyses complement each other and provide us with deeper insights into the complexity of the discussion. How these analyses complement each other, and thus what the value is of theoretical triangulation, can be illustrated by two examples.

One striking moment is when one of the students gives an unexpected answer (line 8). The teacher does not evaluate the answer herself but brings it into discussion. The analysis from the perspective of the teacher shows that through this action she realizes a continuous discourse. On the other hand from the process model, criticizing would be helpful for justifying, but only if it comes from a fellow student, not from the teacher. So her reaction is also in line with the process model, considering the fact that she is not a fellow student, but an authority. From the history perspective her reaction is also useful as it would give students an opportunity to bring in counter-arguments and use meta-concepts. But, as the analysis with the process model shows, justifying and reconstruction do not appear in the discussion and the meta-concepts that would help for justifying do not emerge. The discussion stays on a more superficial level.

A second example of the complementary aspect of the different analyses is when the teacher raises in line 17 the question of whether cancelling one's membership of the NSB would be an act of resistance. From the perspective of the teacher this is called reframing (Schoenfeld, 2002). The historical reasoning analysis provides insight in this reframing from a domain-specific perspective. The teacher reformulates the question on a more general level, by which we mean not focusing on the specific situation of Pip. In doing so, she directs the attention to whether the concept resistance is applicable to cancelling one's membership of the NSB. The reformulated question elicits a discussion in which various students participate. However, with respect to the historical reasoning component using substantive concepts, the teacher could also have elaborated and deepened the discussion by explicitly asking the meaning of the concept resistance. Now, the meaning of this concept remains more or less implicit. In addition, the analysis from the perspective of the students reveals that a clear norm for justification is still lacking, so conceptual level raising does not take place. Thus, although the teacher manages to sustain an ongoing dialogue in which several students participate, the quality of the students' responses stays on a (more or less) superficial level.

These examples make clear that combining these three different perspectives provides us with a deeper insight in this piece of classroom discourse. It shows that some actions of the teacher may be useful from one perspective, but less from another. It thus reveals the complexity of eliciting collaborative knowledge construction in whole-class discussions.

Conclusion and discussion

In this paper we applied theoretical triangulation as an approach to gain a deeper understanding of a small piece of a whole-class discussion in history. The strengths and the weaknesses of this study relate to each other as two sides of a coin. Fine-grained analyses from three different theoretical perspectives on a fragment of a whole-class discussion provide us with detailed information of this dialogue. However, only a small part of the complete whole-class discussions is analyzed and since it concerns a single whole-class discussion, no attention is paid to aspects related to the temporal sequence of instruction and guidance, such as building on past activities and dialogues (cf. Mercer & Littleton, 2007). Having said that, and looking back, what do we know now that we did not know in the beginning?

The analysis from the teacher's perspective reveals the steps a teacher takes in managing a highly interactive routine for discussing a topic. The analysis from the history perspective reveals the quality of the questions and the students' contributions in relation to the concepts at stake. The analysis from the students' perspective reveals the possibilities students have to raise their level of understanding of the concepts. Using these three theoretical perspectives thus enabled us to focus on important aspects of classroom interaction: the role of the teacher to elicit active student involvement in the disciplinary discourse and making progression in it (Engle & Conant, 2002). Our analysis reveals the complexity of orchestrating whole-class discussions and how the contributions of the teacher affect those of the students. It also shows a dilemma teachers are faced with when eliciting collaborative reasoning. To elicit continued and substantial reasoning the teacher should refrain from evaluating students' contributions, but how should they be responded to? Our analysis shows different options. The first aims more at involving several students, as the teacher does in this fragment. The second aims more at improving the quality of reasoning and involves asking for elaborations (cf. Chin, 2006). This latter option may imply that fewer students participate having more extended contributions. A pitfall of this option is that it may become a conversation between the teacher and one student and that the attention of other students is lost. A way out could be for the teacher to organize discussion between small groups. The interaction could become more in line, as described in the process model, with better possibilities for criticism and justifying. But also then there should be an opportunity for justifying and it is the teacher's responsibility to give students that opportunity by stimulating contextualization and defining concepts.

This detailed analysis from different perspectives provides us with alternative and complementary views on this excerpt of a whole-class discussion. Schoenfeld's flowchart, the process model and the framework for analyzing historical reasoning proved to be useful tools in this respect. Schoenfeld's flowchart can be easily used for studying classroom interaction in different domains. The process model, although originally developed for student–student interaction in mathematics, can also be used for teacher–student interaction and for different domains. Lastly, the framework for analyzing historical reasoning is of course a domain specific framework and can only be used for the history domain. However, it is possible to develop similar kinds of frameworks for other domains. These kinds of qualitative analyses may help us to more fully understand the process of knowledge construction in discourse. Mercer (2010) suggests combining these kinds of analyses with more quantitative analyses, for they may generate hypotheses that can be tested on a larger scale. Examples of questions that can derive from this study are, for instance, how the various aspects of the process model relate to the kinds of questions asked by the teacher and to learning outcomes, and how and when students explicitly use central domain-specific concepts.

To conclude, by using theoretical triangulation we were able to relate the perspectives of the teacher, the students and the domain to each other. The analyses reveal the complexities the teacher faces when trying to elicit and promote collaborative knowledge construction and the dilemma of promoting student participation, on the one hand, and deepening the quality of reasoning, on the other. Theoretical triangulation can therefore be considered a valuable methodological approach that can increase our understanding of a complex phenomenon such as classroom interaction.

Acknowledgments

We are very grateful to the teacher and her pupils, who were willing to let us take a look into their classroom. Furthermore, we would like to thank Alan Schoenfeld, Harry Havekes, Gisbert van Ginkel and Carla van Boxtel for their various contributions to this article.

    Note

    Note

  1. 1 Note that collaboration refers in this assignment to working together with the enemy, being a quisling.
  2. Appendix A.: The task

    Task: Collaboration and resistance in the Second World War

    History mainly looks at people. How did they cope with events? Why did an individual or group act in a certain way, at a certain moment, in a particular location? In this task you will be looking at different people who made a choice during the Second World War. You will be doing so in two steps. First, we will look at the question of what position they took with regard to the Germans, and subsequently we will see whether they made their choice based on personal interest or with an eye for the common good.

    Below you will find four quadrants based on the two dimensions of:

    1. position towards the Germans (collaboration versus resistance), and of
    2. grounds for choice (personal interest versus the common good).

    You will also find descriptions of persons who lived in the Netherlands during the Second World War. Place each person in the quadrant, and motivate your choices. Next, discuss your answers with the members of your group. Try to come to an agreement about where to place the different persons in the quadrant.

    Description 1

    Pip Matthée is the 23-year-old owner of an advertising agency in Roosendaal when, in 1942, he is faced with the threat of being ordered to work in Germany. That would result in him losing his job. On the advice of town mayor and NSB* member Deams, Pip becomes a member of the NSB, but he is nevertheless ordered to report for work duty in Germany. Pip cancels his membership immediately. He quickly gets married, hoping his wife will be allowed to run the business. The plan fails and Pip has to go to Vienna.

    *National Socialistische Bond: the Dutch National Socialist party

    Appendix B.: A highly interactive routine for discussing a topic (Schoenfeld, 2002)

    Appendix C.: Process model for interaction and mathematical level raising (Dekker & Elshout-Mohr, 1998)

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