Development of a top-view numeric coding teaching-learning trajectory within an elementary grades 3-D visualization design research project

This article explicates the development of top-view numeric coding of 3-D cube structures within a design research project focused on 3-D visualization skills for elementary grades children. It describes children's conceptual development of 3-D cube structures using concrete models, conventional 2-D pictures and abstract top-view numeric representations integrated with the Geocadabra Construction Box, a computer interface that simulates these representations dynamically.

► Problem solving approaches to develop 3-D visualization with elementary grades children.
► Elementary children's integration of 3-D models, 2-D conventional pictures of the 3-D models, and abstract representations of the 3-D models.
► Integration of dynamic geometry software with children's 3-D visualization development.