Abstract
The study explores children’s emerging understanding of an important science concept in chemistry. Play-based learning activities were designed for children to experience and imagine the concept of ‘small’ as used in chemistry, moving from the visually experienced level of ‘small’ towards more imaginative understandings. Data were collected through visual ethnography. Analyses of six vignettes of conversations between children and the teacher illustrate development of children’s understanding of the focus concept. Deconstruction of everyday items familiar to the children and visual computer animations provided experiences that enabled children to transition from a macro-level of understanding to visualise the molecular/atomic level to differentiate between macro- and micro-understandings of ‘small’. A process of ‘sustained shared thinking’ could describe the teaching/learning processes evident in the children’s and teacher’s conversations. The analyses suggest that sustained and shared conversations between children and teachers should stem from children’s everyday experiences.