This DVD shows excerpts from a lesson study cycle that occurred during
a 10-day summer workshop on lesson study and algebra.

During the first days of the workshop, teachers solve and discuss
algebra problems, study state mathematics standards, and identify
elementary-grade concepts critical to students’ subsequent success
in algebra. They study several existing lessons and choose one as
the basis for their research lesson, taking it through two cycles
of planning, teaching, observation, and reflection.

Although lesson study is sometimes portrayed as a way to “polish”
lessons, their work focuses not just on improving the lesson, but
on deepening their own understanding of mathematics, of students,
and of teaching.