Abstract: The general objective of this study was to find a kind of Science, Technology, Engineering, and Mathematics (STEM) study instruments, and the specific purposes of this study were to investigate the validity, effectiveness, and practicality of it. This was a Research & Development study which was simplified into two stages; they are the preliminary stage and the development stage. This study resulted several kinds of instruments: lesson plan, worksheets, material lesson, teaching evaluation sheets, observation sheets, and questionares. The validity was very good with score 84,38 % for content aspect, 82,50 % for language aspect, and 82,14 % for display aspect. The instruments were very effective to be used by elementary teacher education students and lecturers in the simple machines material to describe the STEM profile’s teacher education students. The instruments could practically be used by the elementary teacher education students and lecturers for the simple machines material based on the positive elementary teacher education students and lecturers responses. Students' science ability increased 27.20%, technology ability increased 23.36%, engineering ability increased 55.20%, and mathematics ability increased 81.80%. The effectiveness of learned was shown by the success of the lecturer in designed learning. The learning design got score of 100 from both expert. The developed learning device is practically used by students and lecturers for simple machines material based on positive responses of students and lecturer. The practicality of learning tools based STEM is shown from the implementation of learning. The percentage of student activities during STEM learning was 75.79%, it showed that student activities during learning including the good category and the teaching ability of lecturers got average score 97,73.
Pengembangan Perangkat Pembelajaran Berbasis STEM (Science, Technology, Engineering, And Mathematics) Untuk Mahasiswa Prodi PGSD
