Learning should as a learning process to enable learners
mentally, build knowledge, which is underpinned by its cognitive
structure. Teachers act more as facilitators and mediators in the
learning process.
The emphasis on learning and teaching more focused on the
success of learners organize their experiences through group
investigation as an alternative method of learning in the

classroom. The study of students at the pre-cycle there are twenty-
six students who got results under SKL SMK N 2 Purworejo, six

other students got results above SKL (76). The method used is a
Class Action Research. Subjects were students of class XI
Marketing 3 SMK N 2 Purworejo.
Keywords: Investigation Group, interests, learning outcomes.