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Lesson study (jyugyo kenkyu) is an approach to professional development that originated in Japan 150 years ago. It was first introduced to the United States in the late 1990s and is now widely practiced in over 50 countries. Lesson study is often perceived as an effective form of professional development aiming to improve mathematics and science instruction, motivated by the high performances of Japanese students as evaluated in the Programme for International Student Assessment (PISA) and Trends in International Mathematics and Science Study (TIMSS). However, lesson study is more than a model for professional development. Lesson study has developed dynamically over time, accommodating educational contexts and the needs of practitioners, policymakers, and researchers. Nowadays, lesson study is used as an approach to lesson analysis, curriculum development, practice-oriented research, demonstration lessons, and various forms and levels of professional development. Lesson study continues to be practiced in the early 21st century as the practice is socially constructed and context-dependent; thus, lesson study is flexible in adapting to the local system. This flexibility and adaptability make it difficult to grasp the comprehensive picture of lesson study. Understanding the unique Japanese educational contexts that have supported lesson study is essential for foreign practitioners and researchers of lesson study as the lack of the necessary supporting conditions often poses challenges for implementing lesson study abroad. Lesson study continues to exist in the early 21st century as it has been facilitated by sociocultural norms in a Japanese educational context and has built upon the professional traditions of Japanese teachers. The focus is on discussing the sociocultural contexts that have supported the dynamic development of lesson study since the late 19th century. For this purpose, “sociocultural” refers to the theoretical space of social relations and cultural practice (Dowling, 2009). For example, a collaborative school culture is not a fixed state or end-product but negotiated through the social relations of the school system that regulates the daily responsibilities, actions, and interactions among managers, teachers, and students around the shared goals. Lesson study has developed under the influence of various factors, including educational theories, approaches, and ideologies, both domestically and abroad. Lesson study is supported by a holistic approach in terms of many aspects such as student learning, teacher-initiated inquiry centered on student learning, the culture of collaboration in professional development, collaboration between teachers and researchers, personal, contextual, and narrative reflection on teaching experience, and flexibility in the learning system that works to address the needs of the educational issues of the time. Nonetheless, contesting forces have contributed to the diversification of lesson study: (a) policymakers’ efforts to standardize lessons and bottom-up initiatives of teachers to experiment with practice; (b) top-down efforts to institutionalize professional development and bottom-up efforts on the part of teachers to work together to realize their educational ideals; and (c) scientific investigation by researchers and narrative, descriptive and subjective reflections on practice by teachers.

Both peer tutoring and cooperative learning are types of peer assisted learning; they involve people from similar social groupings who are not professional teachers helping each other to learn and learning themselves by teaching. Peer tutoring usually involves pairs of students, one in the role of tutor and the other as tutee, with the more able or experienced member helping the other to learn material which is new to the tutor but not to the tutee. By contrast, cooperative learning is usually done in small groups of perhaps four students, often of mixed ability. The group works toward a consensus on a problem. Because it is easier to dominate or hide in a group, roles are often assigned to each group member. Earlier perspectives tended to use the theories of Piaget and Vygotsky, perhaps with some consideration of Bandura and Dewey. Chi, King, and Graesser have been prominent in more recent work. However, a theoretical perspective is offered that integrates these elements with more practical issues. In general, both peer tutoring and cooperative learning “work”— in a wide range of curricular subjects and with a wide range of ages. Given the appropriate form of organization, cognitive gains ensue for both helpers and those who are helped. This is not the main research issue, which is exploring how and why these practices work, in order to improve effectiveness. There are several meta-analyses (a statistical procedure for combining data from multiple studies) which are relevant, and beyond this, key individual papers of specific importance are highlighted. Over the years, we have become wiser about some of the key issues. In peer tutoring, same-ability tutoring has appeared in recent years, sometimes reciprocal, and we need to know under what conditions it works. Cooperative learning has issues regarding the most effective roles for group members and how these integrate with student ability and personality. There has also been much recent work in online peer tutoring which raises different issues. The existing literature is well-developed since these are not new methods. Future research should include more tightly defined studies focusing on more minor variables of context and organization. Many teachers will say they use both peer tutoring and cooperative learning, but very often they overestimate how often anything like good practice takes place. Simply putting students together and hoping for the best will not do, although it might have mild effects. Teachers using these methods need to be clear about what organizational parameters are vital in their context with their type of peer assisted learning. These features then need to be maximized in practice and an eye must be kept on implementation fidelity throughout. Education administrators need to organize professional development for teachers which is thorough, including initial instruction and practice followed up by support and monitoring in the classroom.

Many educational reforms highlight the need for collaboration, understood not only as a competence to be learned but also as a way of learning and teaching. Two types of collaboration can be found in classrooms: peer collaboration and teacher collaboration. The first focuses on how the teacher restructures interactions between pupils organized in pairs or groups. This permits cooperative learning practices, either by peer tutoring or through systems of cooperative learning. By implementing peer collaboration, the teacher is able to develop a new and transformative role which facilitates functions such as continuous assessment or immediate personalized attention, which are more difficult to carry out in environments where a traditional teaching approach is used. However, both the organization of the classroom for peer collaboration and this new teaching role require teacher training. Experiential learning is a key aspect of the training. Different levels of teacher collaboration exist, but the most complete is co-teaching: two teachers planning, implementing, and assessing the same lesson for a group of students. Co–teaching allows teachers to attend to the individual needs of their students; that is why it is such an important tool in inclusive education. Furthermore, it is a learning tool for teachers. Co-teachers can foster mutual observation, reflection, and planning of innovative practices, making working together a form of professional development. However, to ensure that pupils receive better attention and that teachers learn from each other, there has to be teacher training, and again, it must be addressed from an experimental perspective.

This chapter aims to discuss what constitutes the project of vocational education through the elaboration of its key purposes. Although taking many and diverse institutional forms, and being perhaps the least unitary of educational sectors, vocational education stands as a distinct and long-standing educational provision premised on its own specific set of purposes. It has long been central to generating the occupational capacities that societies, communities, and workplaces need, contributing to individuals’ initial and ongoing occupational advancement and their sense of selves as working age adults. It also has the potential to be, and often is, the most inclusive of educational sectors by virtue of engaging the widest range of learners within its programs and institutions. Yet, because its manifestations are shaped by country-specific institutional arrangements and historical developments, it defies attempts to easily and crisply define or capture the singularity of its purposes, forms, and contributions. In some countries it is a distinct educational sector, quite separate from both schools and universities. This can include having industry-experienced teachers. In others, it is mainly enacted in high schools in the form of a broadly based technology education, mainly intended for students not progressing educationally beyond schooling, which promotes and reinforces its low standing. In others again, it comprises in postsecondary institutions that combine general and occupational education. These distinctions, such as being either more or less general or occupational educational provision, also change across time as policy imperatives arise and decline. Much of vocational education provisions are associated with initial occupational preparation, but some are also seen more generally as preparation for engaging in working life, and then others have focuses on continuing education and training and employability across working lives. Sometimes it is enacted wholly within educational institutions, but others can include, and even largely comprise, experiences in workplaces. So, whereas the institutions and provisions of primary, secondary, and university education have relatively common characteristics and profiles, this is far less the case with what is labeled vocational education. Indeed, because of the diversity of its forms and purposes, it is often the least distinguishable of the educational sectors within and across countries. In seeking to advance what constitutes vocational education, the approach adopted here is to focus on its four key educational purposes. These comprise of (a) preparation for the world of work, (b) identifying a preferred occupation, (c) occupational preparation, and (d) ongoing development across working life.