Learning and Instruction 14 (2004) 325–341 www.elsevier.com/locate/learninstruc The active integration of information during learning with dynamic and interactive visualisations Daniel Bodemer a,à , Rolf Ploetzner b , Inge Feuerlein c , Hans Spada c a Knowledge Media Research Center, Konrad-Adenauer-Str. 40, D-72072 Tuebingen, Germany b Institute of Educational Science I, Educational Technology, University of Education, Kunzenweg 21, D-79117 Freiburg, Germany c Department of Psychology, University of Freiburg, Engelbergerstr. 41, D-79085 Freiburg, Germany Abstract Computer-based learning environments commonly comprise symbolic as well as static and dynamic pictorial representations, frequently combined with the possibility of modifying them interactively. While multiple, dynamic and interactive external representations have the potential to improve learning in various ways, they also place specific demands on learners, such as the need to process and relate different representations, to control and evaluate interactions with these representations, and to construct coherent mental representations. Because learners frequently are not able to meet these demands, the presentation of multiple, dynamic and interactive representations might not only not improve but might even impede learning. Starting from cognitive load theory as well as from structure mapping theory, we developed support measures that encouraged learners to actively integrate symbolic and pictorial representations and to interact with dynamic pictorial representations in a structured and reflective way. In two experimental studies, the learning effects of the encour- aged activities were evaluated. Analyses of variance revealed (1) that the active integration of different representations improved learning significantly and (2) that the structured interaction with different representations specifically increased verbal understanding. # 2004 Elsevier Ltd. All rights reserved. Keywords: Multimedia; Multiple external representations; Dynamic visualisations; Simulations; Cogni- tive load; Structure mapping à Corresponding author. Tel.: +49-7071-979-222; fax: +49-7071-979-100. E-mail address: d.bodemer@iwm-kmrc.de (D. Bodemer). 0959-4752/$ - see front matter # 2004 Elsevier Ltd. All rights reserved. doi:10.1016/j.learninstruc.2004.06.006