Situation- the problem as an activity.. Treatment and the starting positions for the construction of knowledge. Enable the learner at the time of the first to employ and exploit old acquaintances

Treatment and the starting positions for the construction of knowledge, through three stages, is:

1 - enable the learner at the first time of recruitment and exploitation of old acquaintances.

2 - make the learner in a second time and aware of the inadequacy of this knowledge.

3 - provide the learner At the time of the third room to build, acquire new knowledge.