Abstract
Children’s gestures can be an important thinking and communication tool in geometry but were rarely considered in research on the development of geometric knowledge until recently. This study explored the differences between 4-8-year-old children’s development in relation van Hiele levels, with and without attending to their gestures made about a hidden 3D object. From 172 children, when verbal responses alone were considered, 74% of children aligned with Level 1. However, when verbal and gestural response were analysed, 40% of these children then met Level 2. This finding suggests the value of expanding the van Hiele model to include embodied representation modes.