Science teachers preparation: an unlimited challenge

We propose in this work, an inversion in the manner of how we regard the formation of teachers, with the aim to focus the continuant formation as primary source of the scene of the effective problems and difficulties faced by teachers in service and making evident the original and creative resources that the present teachers use to solve the problems they encounter. We have also utilized the results that emerged during a course of Practice of the teaching of Science and Biology in the form of sketching some guidance e consequently provide new impulses for the initial formation of Science teachers.