Lesson Study (Estudo de Aula) em diferentes países: uso, etapas, potencialidades e desafios

This article aims to present the Lesson Study teacher training methodology of japanese origin which has adapted in different countries some USA, United Kingdom, Chile, Portugal and Brazil, and to provide reflections for researches who are involved in teacher education. Thus prenominate some characteristics, the collaborative work betweem teachers and researchers based on a theme chosen by the group thinking where relevant of students and/or to teaching teachers.Then the lesson planning, the implementation/observation and reflection. The methodology used for this work was the bibliographical research. We highlight that all the countries studied are based on the satges organized by the japanese, presente some challenges such: as the availability of teachers, obtain financial resources and to carefully organize carefully the training. In addition, it also allows a reflection on the theaching work. Keywords: Lesson Study. Teachers of Training. Practice Research.