Abstrak
Learning activities are directed to forming students' knowledge, attitudes and skills. However, this goal has not yet been fully achieved in Fiqh learning at MTsN 1 Bogor, because there is still a low level of students' abilities in the material of Zikr and Dua. Therefore, efforts are needed to improve the quality of learning by teachers with classroom action research. The effort made is to apply the group investigation in cooperative learning. The study was conducted in two cycles consisting of the stages of planning, implementation, observation and reflection. The results are an increase in students' learning outcomes by an average value of 80.93. The improvement of students' learning outcomes from pre-cycle reached 73.91%. The improvement of students' learning outcomes is very significant and satisfying. Thus, group investigation in cooperative learning can improve students' learning outcomes. <br />