Children in a first-grade class who were taking their first steps in formal mathematical knowledge were given a sequence of five modelling tasks during their regular mathematics lessons. These tasks were different in nature from the problems they encountered in their textbooks. They are more complex and challenging, requiring analysis of the…

Continues an earlier paper which dealt with the basic concepts concerning the learning process that should be used as a starting point for the instructional design process. Instructional decisions that should be taken at the macro design level are discussed. Twenty-five references are listed. (LLS)