Scientific thinking is one of the priority concept in XXI century because there are a lot of digital possibilities that force the potential of teachers but there is no system of scientific thinking development, moreover it does not exist the theoretical applicative foundation of scientific thinking development in teachers. There is an approach of teaching called STEAM education but the evidence is that there is no possible to teach something else in this way without scientific thinking approach, without a special system. In this article are presented the key elements how to create a stable psycho pedagogical system as a theoretical-applicative foundation in the continuous training of teachers in the digital era. One of the key element is based on scientific thinking development that imply critical analysis, epistemic understanding, research skills, reasoning based on scientific evidence, and contextual understanding.