TY - BOOK AU - Pal ,J. TI - The balance of situated action and formal instruction for laerning conditional reasoning SN - 9090087109 AV - DUCE LB1028.43P74 PY - 1995/// CY - Te leeuwarden PB - Jelke van der Pal KW - Education KW - Computer- assisted instruction N1 - includes appendix, bibliographical reference ER -