Acquiring knowledge in science and mathematics : the use of multiple representations in technology based learning environments

De Jong, T. and Ainsworth, S. and Dobson, M. and Van der Hulst, A. and Levonen, J. and Reimann, P. and Sime, Julie-Ann and Van Someren, M. and Spada, H. and Swaak, J. (1998) Acquiring knowledge in science and mathematics : the use of multiple representations in technology based learning environments. In: Learning with multiple representations. Pergamon, Amsterdam, pp. 9-40. ISBN 008043343X