implementation type observer people meeting education amount MATHEMATICAL yuli person result student wa MEDAN 4133312014 learning medan research CAR object harahap IMPROVE mathematic academic approach ABSTRACT DHARMA SMA PANCASILA mastery who cycle action many subject categorized REALISTIC similarly study classroom implemented observation score clas APPLICATION category said data researchers' after classically skill statistic conducted mathematical XI realistic IN minimum year EDUCATION average teacher very problem became OF approache good students' increased value SOLVING improvement analysi ability improve TO know 2017 obtained concluded 1st level pancasila anggina management II reached 2nd GRADE manage number test how MATHEMATICS far diagnostic include based purpose 201 solving enough PROBLEM use dharma ABILITY