What is lesson study?
- It is a school-based teacher-led continuing professional development model for teachers. It originated in Japan in 1872.
- It is a professional learning process in which teachers work collaboratively to:
- formulate goals for students learning in long-term development
- develop “research” lessons to bring those goals to life
- implement the lesson and document observations
- discuss the evidences gathered during the lesson implementation and use them to improve the lesson
- teach and study the lesson again to further refine it.
- It provides teachers an opportunity to see teaching and learning in the classroom. This enables them to develop a common understanding of what effective teaching practice entails in relation to student thinking and learning.
- It keeps students at the heart of professional development activities
- Being teacher-led, teachers can be actively involved in instructional change and curriculum development.
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Lesson Study @UP NISMED 
Mathematics Education Learner
November 9, 2013 at 11:27 pm
my question is how the result of teachers-team discussion affect the learning process?
Is that only for future learning (for other groups of learning) on the topic or would soon be implemented to the current subjects?
Erlina Ronda
November 16, 2013 at 6:18 pm
One of the strength of lesson study as a professional development is that it provides teachers an opportunity to discuss how the research lesson supported/hindered learning, how the learners have responded to the tasks/ questions posed, how teachers can further improve the lesson, etc. The main objective is to enhance teachers mathematical knowledge for teaching and and their knwoledge of how learners learn math by designing, analysing, and improving lessons. The learning process will be enhanced because the teachers are now better teachers after doing lesson studies (so not just one LS).
Lesson study is for making better teachers. It should be part of the teachers school activities that principals should support.
Muhammad Husnul Khuluq
November 17, 2013 at 5:54 pm
Thank Mom.. I my self thought that it is like other learning approaches such as CTL, RME, or others which modified the learning process..
So, the point is to the teacher..
Let me try to make statements and you would please check it true or not..
1) A teacher conducts a learning process which has been settled by the team of LS.
2) While teaching, the teacher is observed by some co-educators (team of LS).
3) After teaching, the teacher and the teams do reflection.
or can the observers interrupt the teacher while she/he is teaching?
Erlina Ronda
November 17, 2013 at 6:15 pm
Yes, you are right except that the observers cannot interrupt the teaching. They are also not supposed to interact with students except to listen to their discussion or look at their work. More readings about lesson study in this link: http://math4teaching.com/lesson-study-2/