American International Journal of Social Science

Lesson Study Based Contextual Mathematics Learning Quality in Elementary School of Selo Boyolali
Sutama, Sabar Narimo, Samino

Abstract
The purpose of this study is to describe the increase of quality of lesson study based contextual Mathematics learning in elementary schools post mount Merapi eruption. This study uses qualitative approach. The site of the research was State Elementary School Selo 1 Boyolali. The teachers of class four in that school were used as model. Data were collected by observation, in depth interview, documentation, and test. The results of this study are: (1) the quality of the learning plan shows an average increase of 22:23%. 2) The quality of the learning process shows an average increase of 39.44%. 3) The quality of the learning evaluation shows an average increase of 39.44%. The conclusion is there is an increase in the quality of lesson study-based contextual Mathematicss learning in elementary school after the eruption of Merapi. By this, it means the students are involved in all three aspects of Mathematicss learning.

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