Pitauli, U. (2022). Development of an Assessment Instrument in Class X Geomatics of SMK Negeri 2 Samarinda for the 2022/2023 Academic Year on Height Difference Measurement Materials Using the Flat Angle Tool Based on the 2013 Curriculum. Educationist: Journal of Educational and Cultural Studies, 1(1), 259–266. Retrieved from https://jurnal.litnuspublisher.com/index.php/jecs/article/view/150