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Integrating Computer Facilitated Learning Resources into Problem-Based Learning Curricula
Gregor E. Kennedy, The University of Melbourne
David M. Kennedy, Monash University
Norm Eizenberg, The University of Melbourne

Abstract
The focus of this paper is on how computer facilitated learning (CFL) resources, if designed appropriately, can be integrated with flexibility into problem-based learning (PBL) environments. It takes as a case study the CFL program An@tomedia and the curriculum in the School of Medicine at the University of Melbourne. The educational design of An@tomedia, which emphasises integration between disciplines and a multiplicity of perspectives, complements a number of teaching and learning modes within the curriculum.

1. A Problem-Based Curriculum
In 1999, the School of Medicine at the University of Melbourne introduced a new medical curriculum incorporating problem-based learning (PBL), self-directed learning (SDL) and educational technology (Keppell, Elliott & Harris, 1998). The introduction of the new curriculum represented a fundamental shift in pedagogical focus for the school. Traditionally, medicine had been taught using a discipline-based approach with clear demarcation between the biomedical sciences on the one hand (anatomy, biochemistry, physiology, etc.) and between biomedical and clinical sciences on the other. Students would "cover" the basic sciences in the first three years of their studies before "applying" their biomedical science knowledge in the final three clinical years.

The introduction of PBL was seen as a way of addressing some of the problematic issues associated with traditional medical courses such as the artificial division between the biomedical (or basic) sciences and between the biomedical and clinical sciences. Koschmann, Kelson, Feltovich and Barrows (1996) argue that the division between basic science disciplines disguises the complexity and "ill-structured" nature of biomedical science knowledge. Furthermore, the division between biomedical and clinical sciences is of particular concern as students may spend a great amount of time learning material that is neither retained nor easily applied in their clinical years (Finucane, Johnson, & Prideaux, 1998; Koschmann, et al. 1996). Bowden and Marton (1998) note that "when medical graduates enter the workplace, they are not faced with situations labelled 'anatomy,' 'microbiology,' or the like. They are faced with patients with illnesses" (p. 129). In order to reconcile these difficulties, the new PBL curriculum was designed to provide horizontal integration across the various biomedical sciences and vertical integration of biomedical and clinical sciences.

The vehicle for integrating the various disciplines in the new medical curriculum is the "problem of the week." Each week students are presented with a clinical problem in a small group tutorial. Through group discussion and with the help of a tutor/facilitator, students generate hypotheses about the potential causes of the clinical problem. The group then considers the mechanisms that might underlie these hypotheses. This process allows students to identify aspects of the problem they think require further investigation over the week, which then become the students' "learning issues" for the week. The processes associated with exploring a problem require students to draw on biochemical, physiological and anatomical knowledge bases or a combination of these, which promotes the integration of biomedical science disciplines. Given that the problems of the week are usually clinically based, students are required to apply their biomedical knowledge in authentic clinical situations from an early stage in the curriculum.

Once students have completed their first PBL tutorial they are required to undertake SDL through which they investigate the weekly problem based on the learning issues they have generated. SDL is a student-centred approach to learning through which students take control of their own learning processes and experiences. The learners "decide how, where and when to learn the content they have identified as important" (Hammond & Collins, 1991, p. 153). A variety of resources are made available to students to support them in their SDL. Resources include more traditional modes of instruction (such as lectures and practicals) and electronic and paper-based resources (including text books, journal articles, web pages and computer facilitated learning (CFL) resources). Students use these resources to investigate their learning issues over the week, before returning to their second PBL tutorial where, as a group, they identify and discuss the critical mechanisms that underlie the problem. Through discussion, guided by the tutor/facilitator, students come to a resolution of the problem.

A critical feature of the new medical curriculum is the incorporation of educational technology to support student learning. The two major forms of educational technology employed are an online Course Management System (TopClass) and CFL resources (Keppell, Kennedy & Harris, 2000). TopClass allows students to access core content (problems of the week), send and receive mail, receive announcements from tutors and take online quizzes. CFL resources are used in areas where students traditionally have difficulties or in areas where the use of media, such as video, audio, high quality images or animation, is particularly appropriate to support students' understanding of concepts or principles. These resources may take a variety of forms including interactive multimedia programs, image banks, web sites and online resources such as biomedical atlases, encyclopaedias and dictionaries. The focus of this paper is on how one carefully designed multimedia program, called An@tomedia, has been successfully integrated into the new medical curriculum.

About the authors...

2. The Educational Design of An@tomedia
An@tomedia is a multimedia program whose on-going development began five years ago. It will be composed of eight modules, three of which (back, abdomen, and thorax) have been completed and are currently used in the medical curriculum. The program presently contains over 2000 high quality images and diagrams, including radiographs, detailed dissection images of human bodies, and graphics with coloured overlays highlighting key anatomical details.

An@tomedia allows students to explore anatomical concepts, principles and procedures from a variety of perspectives. The use of multiple perspectives (and multiple pathways) in CFL has been advocated because it allows learners to access the material in a manner more suited to their needs (Reeves, 1992). Individual differences in approaches to learning, prior knowledge and levels of interest lead students to approach an anatomical problem in a variety of ways. Moreover, Koschmann et al. (1996) argue that if students are provided with a single perspective, they may oversimplify concepts, which may ultimately prove misleading. Researchers have also advocated the use of multiple perspectives in teaching and learning as a support for higher levels of cognition, including reflective thinking (Ramsden, 1992; Laurillard, 1993).

Traditional models for teaching anatomy adopt either a systemic (e.g., nervous, musculo-skeletal, urinary) or a regional approach (e.g., back, pelvis, abdomen). The designers of An@tomedia integrated these two approaches, recognising that body systems pervade different regions of the body and that body regions are part of wider body systems. In addition to integrating these two perspectives, the developers identified the need to incorporate a strong practical dimension to the program. Practical work is a critical aspect of anatomy teaching and learning and has traditionally been taught using small group dissection classes. A less often used practical component of anatomy teaching and learning is imaging (CT scans, X-rays and MRI scans). In response to this practical component of anatomy, the developers included two further perspectives in the program: dissection and imaging. By incorporating these four perspectives in An@tomedia and by allowing students to move easily between them, the program attempts to link anatomical theory (regions and systems) with anatomical practice (imaging and dissection).

In addition to these four perspectives of anatomy, the developers recognised the need for a specific clinical focus in the program. In order to provide a comprehensive course in Anatomy, students must apply purely theoretical knowledge and practical discipline in clinical situations. Two strategies were used to promote clinical applications across all four anatomical perspectives. First, clinically-based questions were embedded within the program, focussing on the application of key anatomical concepts and principles in clinical situations. Second, a range of specific clinical techniques and procedures (such as where to perform a lumbar puncture) were embedded at appropriate points in the program.

A summary of the educational approach adopted in the design of An@tomedia is presented in Figure 1, which shows a three-dimensional model of the program's educational design. The X-axis represents the anatomical regions (only three regions of the body are shown); the Y-axis represents anatomical systems (only four are shown); and the vertical axis represents the practical dimensions of dissection and imaging. Students may access anatomical content from any of these perspectives depending on their needs and interests. More importantly, once they begin investigating a particular content area, students can easily move between these perspectives. This is made clear in Figure 2 where the user is examining peripheral nerve supply from the "systems" perspective. The remaining three perspectives are listed on the lower right-reached with a simple mouse click.

Figure 2. A screen from An@tomedia showing the systems perspective, identification questions, clinically oriented questions and roll-overs

An external link to the authors'Anatomedia startup screen with the four prespectives shown.

3. Using An@tomedia in a Problem-Based Curriculum 
An@tomedia has been used as a resource in the problem-based medical curriculum in four ways:

1. as a support for students' PBL and SDL;
2. as a preparatory and revision tool for anatomy tutorials and practicals;
   
3. as an explanatory tool in lectures; and
   
4. as a formative assessment tool.

As mentioned above, students are given access to a variety of CFL resources to assist them with their PBL and SDL. Students can access computer-based resources either in PBL tutorial rooms or in a biomedical computer lab, and An@tomedia is available for students in both these locations. In their PBL tutorials, students are able to use An@tomedia when discussing or reviewing anatomical principles or procedures relating to the problem. In addition, when undertaking their own SDL during the week, students can access An@tomedia to assist with their investigation of the problem. In this way An@tomedia is used as an invaluable resource to support students' PBL and SDL.

As part of their medical studies students complete theoretical anatomy tutorials and practicals on anatomy dissection and procedures. These two classes involve small group work with a tutor. In their theoretical classes, students are expected to form an understanding of anatomical systems and regions. More specifically, students are expected to be able to perform anatomical identification and clinical diagnosis as a result of completing this course. In their dissection and practical classes the focus is on dissection generally and anatomical procedures particularly related to the problems of the week. In both these classes An@tomedia is used as a preparatory tool for students. That is, students are asked to prepare for their theoretical and practical classes by covering relevant aspects of An@tomedia. Clearly the systems and regions perspectives are emphasised in the theoretical tutorials while the imaging and dissection perspectives are emphasised in the practical classes. In addition to being a preparatory tool, students are often asked to use An@tomedia as a review tool once classes have been completed. This allows students to review and reinforce key principles or procedures.

The third use of An@tomedia involves traditional lectures. The examination and explanation of anatomical structures in lectures can be greatly enhanced through the use of An@tomedia. Lecturers are able to use the high quality diagrams, scans, and dissection images in An@tomedia as a tool for the explanation of concepts. Lecturers can easily and dynamically move between the systemic and regional views as well as through layered dissections to further enhance students' understanding of concepts and principles. By using An@tomedia as a lecturing tool, lecturers are able to familiarise students with the structure and navigation of the program, while simultaneously investigating anatomical content, which is relevant to the students' course and study goals.

Formative assessment, the fourth use of the program, is a key feature of An@tomedia. Students are frequently challenged with questions about the content they are reviewing. For example, students may be required to interpret a visual of a back dissection that displays the typical site of a bulging intervertebral disc compressing a particular lumbar spinal nerve. A range of relevant questions could be posed that will help students interpret the clinical symptoms and signs and relate them to the lesion displayed. Students can attempt to answer the questions in their notebooks and then access feedback in the form of an expert response to the question. They are also able to interact with images by using rollovers, which provide further explanatory and summary information.

4. Evaluation of An@tomedia
An@tomedia has undergone extensive evaluation, both during its design and development and after its implementation in the medical curriculum. Results of these evaluations are reported elsewhere and will not be covered in detail here (see Kennedy, Eizenberg & Kennedy, 2000a; Kennedy, Eizenberg & Kennedy, 2000b). In these evaluations, data were collected from students and anatomy tutors/lecturers using both qualitative and quantitative questions. Quantitative responses were scored on five point likert scales (where 1 indicated "strongly disagree" and 5 indicated "strongly agree"). Table 1 shows mean scores and standard deviations for items related to the interdisciplinary design of An@tomedia. (Note that some questions were only asked of students and others only of tutors). It can be seen from Table 1 that both students and tutors were very positive about An@tomedia with mean scores for items typically scoring above four.

Table 1. Mean scores and standard deviations for items relating to the educational design and integration of An@tomedia.

Table 2. Tutors' suggested use of An@tomedia.

Table 3. Students' preferences for the use of An@tomedia.

5. Conclusion
An@tomedia can be used to complement and support a variety of forms of teaching and learning within PBL curricula. The flexibility inherent in the program has ensured its effectiveness in various modes of instruction (PBL tutorials, SDL, practical classes and lectures) at the University of Melbourne's School of Medicine. This flexibility also allows An@tomedia to address different components of anatomy (theoretical, practical and clinical). An@tomedia was not designed to replace current forms of teaching and learning in anatomy, nor was it designed to become the sole resource for the teaching of anatomy. Rather it was designed to complement and extend current teaching of anatomy by providing new teaching and learning opportunities for teachers and students alike.

6. References
Bowden, J., & Marton, F. (1998). The University of Learning: Beyond quality and competence. London: Kogan Page Limited.

Finucane, P. M., Johnson, S. M., & Prideaux, D. J. (1998). Problem-based learning: Its rationale and efficiency. Medical Journal of Australia, 168, 445-448.

Hammond, M. & Collins, R. (1991). Self-directed learning: Critical practice. East Brunswick, N.J.: Nichols /GP Publishing.

Keppell, M. Elliott, K. & Harris, P. (1998). Problem based learning and multimedia: Innovation for improved learning of medical concepts. In R.M. Corderoy (Ed.) Proceedings of the fifteenth annual conference of Australian Society for Computers in Tertiary Education (ASCILITE) (pp. 417-424). University of Wollongong, NSW.

Keppell, M., Kennedy, G. & Harris, P. (2000). Transforming traditional curricula: Enhancing medical education through multimedia and web-based resources. In J. Bourdeau & R. Heller (Eds.) Proceedings of Ed-Media 2000 World Conference on Educational Multimedia, Hypermedia and Telecommunications (pp. 1369-1370). AACE. Charlottesville, USA.

Kennedy, D., Eizenberg, N., & Kennedy, G. (2000a). An evaluation of the use of multiple perspectives in the design of computer facilitated learning. Australian Journal of Educational Technology, 16 (1), 13-25

Kennedy, D, Eizenberg, N., & Kennedy, G. (2000b). An evaluation of interactive multimedia designed to support problem based learning in medicine. In J. Bourdeau & R. Heller (Eds.) Proceedings of Ed-Media 2000 World Conference on Educational Multimedia, Hypermedia and Telecommunications (pp. 473-478). AACE. Charlottesville. USA.

Koschmann, T., Kelson, A. C., Feltovich, P. J., & Barrows, H. S. (1996). Computer-supported problem-based learning: A principled approach to the use of computers in collaborative learning (pp.83-124). In T. Koschmann (Ed.), CSCL: Theory & Practice in an Emerging Paradigm. Mahwah, Lawrence Erlbaum, NJ.

Laurillard, D. (1993). Rethinking university teaching: A framework for the effective use of educational technology. London: Routledge.

Ramsden, P. (1992). Learning to teach in higher education. London: Routledge.

Reeves, T. (1992, September-October). Effective dimensions of interactive learning systems. In A. Holzl & D. Robb (Eds.), Finding the future: ITTE '92, Proceedings of the Information Technology for Training and Education Conference. Lucia, Brisbane: University of Queensland.

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IMEJ multimedia team member assigned to this paper	Ching-Wan Yip