Practicing Lesson Study Based on Group Investigation Learning Model with Local Materials in Ecosystem to Improve Metacognition Skills and Cognitive Learning Outcomes of Graders X at SMAN 1 Mojo Kediri

This research aims to find out the impact of implementation of Group Investigation learning model in the form of Lesson Study based Local Materials in ecosystem to improve metacognition skills and cognitive learning outcomes of graders X at SMAN 1 Mojo Kediri. This research used Class Action Research, which was collaborated with Lesson Study, and designed using two cycles. It was started on March to April 2015 which involve one model teacher and 4 observers. The data of cognitive learning outcomes was collected using essay test and the data of metacognition skills collected by metacognition skills rubric that was integrated in cognitive learning outcomes. The data was analysed using descriptive analysis. The result of this research showed that there was enhancement of metacognition skills, from 73% to 75%. Students learning outcomes also showed that it increased from 53,61 became 76,14%. The positive value of Class Action Research which collaborated with Lesson Study are teachers can find the problem in learning process and the problem solved by collaboration