摘要：The objectives of this study were to: (1) analyze differences in students' mathematical spatial abilities through contextual learning models and guided discoveries oriented to Mandailing Batak culture, (2) analyze differences in student learning motivation through contextual learning models and guided discoveries oriented to Mandailing Batak culture, (3) knowing whether there is an interaction between the learning model and the KAM of students towards the spatial abilities of students, (4) knowing whether there is an interaction between the learning model and the KAM of students towards students' learning motivation. The instruments used consisted of: (1) spatial ability tests, (2) learning motivation questionnaires. Data analysis was performed by analysis of two-way variance (ANAVA). Research results show: (1) there are differences in spatial abilities of students through through contextual learning models and guided discoveries oriented to Mandailing Batak culture, (2) there are differences in student learning motivation through contextual learning models and guided discoveries oriented to Mandailing Batak culture, (3) not the interaction between the learning model and the KAM of students towards the spatial abilities of students, (4) there is no interaction between the learning model and the KAM of students towards students' learning motivation.
