ap-3-11.dvi Acta Polytechnica Vol. 51 No. 3/2011 A Taxonomy of Technical Animation D. Vaněček, J. Jirsa Abstract The age in which we are living nowadays is characterized by rapid innovation in the development of information and communication technologies (ICT). This innovation has a significant influence on the education process. This article deals with computer animation in technical education. Our aim is to show the taxonomy of education animation. The paper includes practical examples of animation. Keywords: animation, taxonomy, didactic function. Utilization of animation The use of animation as a didactic tool is connected with the following notions: [1] • Displaying a simulated model • Displaying phenomena that cannot be properly processed by other didactic tools • Equipment that cannot be demonstrated by some other model because of its size or haz- ardousness • Displaying technologieswhicharecostly in terms of money, time, etc., or which are inaccessible However, animation can also be misused, and it is necessary to beware of potential shortcomings of animation. Some of them were summarized by Skalková. [2] The primary problems are reduced con- tactwith reality and reducedfirst-hand experience of students. Young people may get the idea that they have learned everything through an animation, and that they do not need to come into contact with ac- tual objects or phenomena. This is a fatal error that can have immense consequences. There can also be negative impacts on learners’health if they sit contin- uously in front of a computer screen. The utilization of these modernmeans can also lead to several prob- lems affecting teachers. Firstly, the transfer of con- trol over the learning process from the teacher to the student can lose some of the benefits that a learner can draw from the knowledge, influence and experi- ence of a teacher. This maymake learning inefficient and affect the student’s orientation in the topic un- der discussion. In addition, the student’s ability to gain information from a teacher about the relevance of a topic for other fields of study is dramatically re- duced. We can also point out that teachers may be put under pressure by the need to keep up to date with innovations in education and in education tech- nology. Classification of computer animation — taxonomy Computer animations designed for pedagogical pur- poses can be divided into a number of categories. From the didactic point of view, animation can be classified: According to the student’s activity: • Passive, where a student only observes what is presented to him/her. • Active, where a student participates actively in running and displaying the animation. The stu- dent can manipulate certain constituents of the animation. If the student is not active enough, the animation does not run and becomes only a static picture. Classification of computer animations — taxon- omy according to didactic function: • Motivational—amotivational animation is usu- ally applied by the teacher at the beginning of a class when giving an introduction to the topic under discussion. The goal is to get students’ attention, and to engage them in the problem that is to be presented. An example of motivational animation: • Electric power generation (Figure 1) • Illustrative — these animations are designed to provide an insight into the patterns of the phe- nomena, technologies or processes that are to be presented. They aim to explain the phe- nomenon, technology or process under study in greatdetail, with emphasis on illustration, clear- ness and intelligibility. The student has a pas- sive roleasanobserver, andcreatesbasicnotions about the topic problem on the basis of his/her observations. 59 Acta Polytechnica Vol. 51 No. 3/2011 Fig. 1: Electric power generation Examples of illustrative animation: • soldering components by the SMD remelt- ing process (Figure 2) • the principle of an extruder for cable pro- duction (Figure 3) • thermal treatment (direct bainite transfor- mation) (Figure 4) • two-stroke and four-stroke engines (Fi- gure 5) Fig. 2: Soldering components by the SMD remelting pro- cess [3] Here, it is important to note that the line between motivational animation and illustrative animation is not clear-cut. We can often encounter a combina- tion of both types. In such cases we will speak of illustrative-motivational animation. Fig. 3: The principle of an extruder for cable produc- tion [3] 60 Acta Polytechnica Vol. 51 No. 3/2011 Fig. 4: Thermal treatment — direct bainite transformation [4] Fig. 5: Two-stroke and four-stroke engines Fig. 6: Presentation of Snell’s law [3] • Demonstrative-interactive animation —the stu- dent participates actively, and can affect the components of the animation (e.g. by changing the parameters of the phenomenon, technology, or process that is being presented). The anima- tion is usually of a programmed, simplified in most cases physical model, which corresponds with the patterns of the real world. Examples of demonstrative-interactive anima- tion: • Presentation of Snell’s law (Figure 6) • Laboratory devices for introducing impreg- nating processes (Figure 7) • Diagnostic, practicing the subject, an examina- tion in which the student affects the animation and tests the knowledge that has been acquired. 61 Acta Polytechnica Vol. 51 No. 3/2011 Fig. 7: Animation of laboratory devices for introducing impregnating processes [3] Fig. 8: Creating the cycle of a heat pump [5] 62 Acta Polytechnica Vol. 51 No. 3/2011 Fig. 9: Characteristics of a silicon diode [6] Here, it is necessary for some form of feed-back to be incorporated to inform the student about the correctness or incorrectness of the answer. Dividing electronic components into correct cat- egories, creating a correct network schema, cre- ating the cycle of a heat pump, etc., can serve as examples. An example for gaining practice: The principle of the heat pump — example of a practical exercise, creating the cycle of a heat pump (Figure 8) According to the way of presenting the topic, with regard to representation in space: • Two-dimensional (2D), where plane geometric figures are used to symbolize specific parts of the technology. An isometric view can also be used (so-called 2,5D) to emphasize the possible dimensional configuration of the symbols. An example of two-dimensional (2D) animation: Characteristics of a silicon diode (Figure 9) • Three-dimensional (3D)—all objects in the ani- mation are representedby three-dimensional de- piction and are also displayed in three dimen- sions on the screen. Some modeling tools are needed for creating the animation An example of three-dimensional (3D) anima- tion: Witness program— presentation of an in- dustrial process (Figure 10) Fig. 10: Witness program—presentation of an industrial process 63 Acta Polytechnica Vol. 51 No. 3/2011 Fig. 11: Program Third Wave AdvantEdge — thermal stratification According to availability: • Generally available, e.g. on the internet, commercially-available educational CD-ROMs • Restrictively available, only within specific edu- cational facilities It is obvious that these basic categories can be combinedwitheachother. Theclassificationcouldbe further specified, e.g. on the basis of specific special- ized subjects, but that would lie beyond the frame- work of this paper. A simulation can be understood as a specific case of an animation. A simulation is a visualization of a specificmath- ematical model. The input parameters have to be set. The mathematical model generates output data fromtheparameters. The inputdata is usually in the formof specificphysicalquantities (e.g. tension, tem- perature, pressure, force). The difference between a simulation and ananimation lies in the incorporation of random phenomena which exist in the real world and affect the final behavior of the model. An exam- ple is a simulationof an industrial process, a proposal for interior lighting, a proposal for traffic operation, etc. Example of a simulation: Simulation of a cutting process in theAdvantEdgeprogram—thermal strat- ification (Figure 11) Conclusion Thispaperhasattempted topresentacategorization, descriptionand explanation of specific variants of an- imations for e-learning that teachers can encounter in their profession. The main emphasis has been on the teaching and learning aspects of the animations. For the sake of better understanding, the theoretical categorizationwas supplementedby specificpractical examples. Technological aspects of creating anima- tions are dealt with in the first and the third parts of this three-part paper. References [1] Vaněček, D.: Informační a komunikační tech- nologie ve vzdělávání. Praha : ČVUT, 2008. ISBN 978-80-01-04087-4. [2] Skalková, J.: Obecná didaktika: vyučovací pro- ces, učivo a jeho výběr, metody, organizač- ní formy vyučování. Praha : Grada, 2007. ISBN 978-80-247-1821-7. [3] Jirsa, J.: Tvorba počítačové animace pro potřeby výuky technických předmětů, BP MÚVS ČVUT, Praha 2009, ved. práce D. Vaněček. 64 Acta Polytechnica Vol. 51 No. 3/2011 [4] Učeň, M., Filípek, J.: Izotermické tepelné zpracování MendelNet’04 Agro Ed. R. Cerkal, P. Ryzny, E. Fryščáková, T. Středa, Brno : Mendelova zemědělská a lesnická univerzita v Brně, 2004. [5] Kříž, Č., Tvorba animace pro e-learningový kurz, BP MÚVS ČVUT, Praha 2006, ved. práce D. Vaněček. [6] Kropelnický, R.: Využití animace při tvorbě e- learningového kurzu, BP MÚVS ČVUT, Praha 2007, ved. práce D. Vaněček. Ing. Paed. IGIP. David Vaněček, Ph.D. E-mail: david.vanecek@muvs.cvut.cz Czech Technical University in Prague Masaryk Institute of Advanced Studies Department of Engineering Pedagogy Horská 3, 128 00 Praha 2, Czech Republic Ing. Bc. Jan Jirsa E-mail: jirsaj@fel.cvut.cz Czech Technical University in Prague Faculty of Electrical Engineering Technická 2, 166 27 Praha 6, Czech Republic 65