Using Bridging Analogies and  Anchoring Intuitions to Deal With Students'
                                                Preconceptions in Physics 
This article discusses the use of analogies and other instructional strategies in dealing with students' preconceptions in physics in order to discuss students' conceptions and their relationship to instructional strategies The approach described above focuses time and effort on the devolopment of qualitative conceptual understanding and uses analogies as a central technique.According to this article the students are actively engaged in evaluating whether the examples are analogous or not and in finding the best way to view the target situation 

  Questions:
1)How does teacher find preconceptions?
2)What are the disavantages of analogies?