PITAULI, U. 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, [S. l.], v. 1, n. 1, p. 259–266, 2022. Disponível em: https://jurnal.litnuspublisher.com/index.php/jecs/article/view/150. Acesso em: 7 oct. 2025.