INNOVATIVE TEACHING MATHEMATICS THROUGH  LESSON STUDY

Keywords: Lesson Study design, Prisma tegak segitiga dan limas, understanding, mathematics.

Abstract. This study aimed to provide a real experience of learning mathematics for primary school

lesson study - based in improving the ability of mathematical understanding with Lesson Study design.

The main participants are PGSD UPI students and elementary school teachers in Purwakarta. To analyze

data, the study followed several steps, including: (1) identify the learning problem of teachers` model (2)

plan the learning steps (a way to solve the identified problem); (3) implement the learning done by the

model teacher while the other teacher observing the learning process, (4) evaluate the learning process that

has been done (5) improve the learning planning based on the results of the evaluation (6) re-implement

the learning, (7) go after the implemented learning, and (8) share the experience and findings of the

evaluation to other teachers. Activity sheets were used to gather the data. They are linked to mathematical

understanding ability, attitude scale, and student journal. Referring to the results, they showed the the

teachers learned triangle and pyramid triangle prism through the Lesson Study design got sightly

improvement and a positive attitude.

Keywords : Lesson Study design, Prisma tegak segitiga dan limas, understanding, mathematics.

(Workshop of PGSD students and teachers of SD campus UPI Purwakarta region)