Abstract
Computer Assisted Instruction (CAI) is an efficient learning-teaching procedure. Although there are extensive educational software tradition using CAI approach, few of them have a better performance than the standard drill and practice methods. In this work, the specific educative computer software "Lets Play With..." was designed in order to teach color, shapes and body positions basic concepts with preschoolers. The software structure follows the Gagne's instruction design and the applied behavior analysis. Program was carried on with 64 boys and girls preschoolers from Cadiz school district. Statistical significance was found compared to with a standard drill and practice shapes and body position learning-teaching procedure.
