PENGARUH STRATEGI PEMBELAJARAN DAN GAYA KOGNITIF TERHADAP HASIL BELAJAR MATEMATIKA SD Penelitian Eksperimen Di Prodi PGSD FIP Unima THE EFFECT OF LEARNING STRATEGIES AND COGNITIVE STYLE ON THE LEARNING OUTCOMES OF ELEMENTARY MATHEMATICS JULIANA MARGARETA SUMILAT ABSTRACT This research was intended to investigate the effect of problem solving learning strategies and expository learning str…