Within the project “Prim-E-Proof”, digital media learning environments (Open Source Applets on Tablet PCs) are designed. The aim is to support argumentation and proving skills through the iconic and interactive visualization of reasoning processes in primary school. The focus of the project is on supporting classical teaching and learning processes with digital learning environments. In this paper selected scenes of the argumentation process of two pupils using a first draft learning environment (Platz, 2019) are analysed using interpretive methods.