Usability of Computer Models in Chemistry Instruction: Results of Expert Evaluation

Martin Bílek, Veronika Machková


Computer models have been penetrating the school chemistry instruction as a result of ICT implementation in education. The computer models of identical content differ in technical processing, interactivity type or degrees of freedom. We suppose that different characteristics provide impact on application the computer models into the process of instruction, on selection of pedagogic design of the lesson and learning objectives – reaching the objectives should be supported by the computer model. Our research included expert evaluation by the two-round Delphi method totally three computer models of acid-base titration presenting the same content in different technical designs. The evaluation form was designed based on questioning and scaling. Computer models were evaluated in three fields in relation to pre-defined set of learning objectives, the level of processing and applicability in the instruction. The expert evaluation was provided by 17 experts in chemistry instruction. The collected data were analysed by quartile graphs. The results of analysis showed (1) the evaluated computer models dispose of different potential in reaching learning objectives in acid-base titration topic in relation to technical design and (2) the different technical design of the computer models of acid-base titration provides impact on the recommended pedagogical design of instruction.

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