Desain Alat Peraga Vektor Resultan Gaya untuk Siswa Sekolah Menengah Atas (SMA)
This study aims to create the design of resultant force vector teaching aids to help improving studentsâ€™ concept understandings. The method of this study is the experimental method with Pretest-Posttest Control Group Design. The sample of this study is the tenth grade of 3 natural science class (X IPA 3) as the experimental class and the tenth grade of 4 natural science class (X IPA 4) as the control class at 1 Subah Senior High School. The vector teaching aids were tested for the validity by the validator using a questionnaire. The studentsâ€™ responses were measured using a questionnaire. The studentsâ€™ concept understandings were measured from the results of the pretest and posttest scores. The result of the teaching aidsâ€™ feasibility test is 98.61%, showing that the teaching aids are very feasible to use. The increase of studentsâ€™ concept understandings measured by the studentsâ€™ learning outcomes in the experimental class after using the resultant force vector teaching aids is 0.7 included in the high category. The attitude and interest responses of the students after using the teaching aids get an average percentage of 71.06% included in the high category.