Meaning Making with Multiple Representations: a Case Study of a Preservice Teacher Creating a Digital Explanation

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.

Pengembangan Modul Berbasis Multipel Representasi dengan Bantuan Teknologi Augmented Reality untuk Membantu Siswa Memahami Konsep Ikatan Kimia

A good understanding of the three levels of chemical representations is required to understand the concepts of chemical bonding. However, most students are difficult to understand chemical bonding topics due to the abstract concepts and the learning resources used don’t fully integrate the three levels of chemical representations. Therefore, learning resources that cover all of the chemical representations and visualize the abstract concepts are needed. The purpose of this study is to determine the level of validity and responses of teachers and students to the developed chemical bonding module based on multiple representations assisted by AR technology. This type of research is research and development that refers to the ADDIE instructional design model. The instrument used in this research is the sheet of validity and the response questionnaire. The collected data were analyzed using percentage analysis techniques. The product of this research is a chemical bond module based on multiple representations and an augmented reality chemistry simulator of chemical bonding application. The results of the expert's validation show that the average percentage of content, media, and language validity respectively are 99, 95, and 97% with very valid criteria, so that it can be used in the learning process. In addition, teachers and students gave a very good response to the product with a percentage of 90 and 87% consecutively. These findings indicate that the modules assisted by AR technology could support the chemistry teachers to explain the chemical bonding topic and help students visualize the abstract concepts of chemical bonds

Lesson Study as a Means to Change Secondary Preservice Physics Teachers’ Practice in the Use of Multiple Representations in Teaching

Multiple representations, such as experimental data, schemas, tables, and graphs, are an essential resource in science teaching. However, their use in the classroom typically poses a challenge for preservice teachers. The aim of this research is to examine changes in the practices of a group of preservice teachers regarding the use of multiple representations in the teaching of kinetic energy to 9th grade students, when this training is included in their initial teacher education program. For this purpose, a collaborative, reflexive, and student-learning centered approach, namely, a lesson study with three cycles, was implemented. A descriptive and content analysis for qualitative data collected showed improvement in the practices of the preservice teachers, namely on the representations both of the event that represents the “real” world, as well as of the scientific concepts. The results obtained contribute to deepening the knowledge on the use of multiple representations by preservice teachers, as well as to increasing the knowledge on using lesson study to develop the ability to use multiple representations during initial teacher education.

Describing the Experiences of Students with ADHD Learning Science Content with Emerging Technologies

Emerging technologies, such as virtual reality, haptics, and 3-dimensionality, provide novel opportunities to allow students to investigate scientific phenomena by fostering perceptions of virtual presence, the feeling of being sensorially immersed and authentically interacting within a computer-generated virtual learning environment (VLE). Neurotypical learners are largely represented in VLE research on science learning, with fewer with neurodivergent learners, such as students with ADHD. This descriptive case study sought to address the dearth in the literature on neurodivergent students’ experiences, with emerging technologies, for learning science. Specifically, the case describes the extent to which neurodivergent learners experience the affordances of VLEs for science learning, as compared to their neurotypical peers, in: zooming, spatially orienting and rotating objects, viewing multiple representations and abstract processes in real-time, as well engaging in risk through multiple trials. Five middle grades students (diagnosed with ADHD) were assessed and observed using a tool (zSpace) that combines emerging technologies to learn cardiac anatomy and physiology. Students’ utterances of virtual presence and technological affordances were coded, and frequency counts and percentages were calculated, both individually and collectively. The results found that students most described sensory (41%), control (30%), and realism (26%) constructs with fewer reports of holding their attention (3%). Analyses of cardiac assessments found gains in scores for spatial rotation and viewing abstract processes, no change in score in viewing multiple representations, and a decrease in scores for spatial orientation. This case study provides unique insight into the needs of neurodivergent learners when using emerging technologies for science learning.