Fig. 6From: Concept networks of students’ knowledge of relationships between physics concepts: finding key concepts and their epistemic supportRadar maps of the key concepts obtained as averages. The radar map representation of the 18 most important key concepts obtained by averaging the values of communicabilities over 12 individual concept network. The weighting of links is as denoted in upper row (note the colour annotation). The out- and in-communicabilities are shown in the upper and lower rows, respectivelyBack to article page