Search

The construction of dynamic multimedia products requires the selection and integration of a range of semiotic resources. As an assessment task for preservice teachers, this construction process is complex but has significant potential for learning. To investigate how weaving together multiple representations in such tasks enables learners to develop conceptual understanding, the paper presents an indicative case study of a 2nd-year preservice primary (K-6) teacher who created a digital explanation on the topic of 'transparency' for stage 3 children (ages 11–12). We focus on data gathered during the 3-h construction process including artefacts such as images, online searches, websites accessed and paper records used for planning; the digital explanation as product; audio and video capture of the construction process and pre- and post-construction interviews. Using multimodal analysis, we examine these data to understand how meanings are negotiated as the maker moves iteratively among multiple representations and through semiotic choices within these representations to explain the science concept. The analyses illustrate the complexity of the construction process while providing insight into the creator's decision-making and to her developing semiotic and conceptual understandings. These findings allow us to build on the concept of cumulative semiotic progression (Hoban & Nielsen, Research in Science Education, 35, 1101-1119, 2013) by explicating the role of iterative reasoning in the production of pedagogic multimedia. [ABSTRACT FROM AUTHOR]

A "digital explanation" is a science learning task where learners explain science content to non-expert others, in this case, the learners are primary preservice teachers [PST] in a science methods class. In the task, PST are assigned a prompt based on science content from the New South Wales K-6 syllabus and generate or source multiple representations to design and produce this stand-alone digital artefact. In this study, PST were interviewed about their decision making in producing the digital explanation, which offers insight into the design process and what makes for a successful product. Data include the digital explanations, interviews with nine PST, marking rubrics and rationale statements generated as part of the task. Thematic coding shows PST make design decisions for four principal reasons: content, engagement, clarity and unconscious selection. Decisions around content and engagement prevail and their decisions reveal keys to success in creating a digital explanation. We also note a tension between emphasis on engagement over content, which may reflect that the intended audience is young children and PST have a strong desire to gain and keep children's interest. [ABSTRACT FROM AUTHOR]