EFEKTIVITAS PENGEMBANGAN PERANGKAT PEMBELAJARAN MODEL PROJECT BASED LEARNING DENGAN PENDEKATAN STEM UNTUK MENINGKATKAN KETERAMPILAN PROSES SAINS PESERTA DIDIK

: This research and development aims to produce project-based learning model learning tools with a STEM approach to determine the criteria for the effectiveness of learning tools so that they can be used in the learning process to improve the creative thinking skills of students of the Gorontalo Model State Vocational School. The research was conducted using the RnD model with the research stages covering preliminary studies, planning, preparation of initial products, product validation, product trials, and final products. The assessment of the results of the science process skills test of students in the limited field trial was carried out in class X of the Gorontalo Model State Vocational School, the students of this limited field trial amounted to 10 people, of which 10 participants. , hypothesized 68%, grouped 93%, observed (observed) 92%, interpreted data (interpreted) 67%, applied concepts 77.5%, and communicated 87.5%. In the results of the assessment of the Broad Scale Test of students according to the indicators of science process skills, the indicators are planning experiments 92%, making hypotheses 74%, grouping 94%, observing (observing) 92%, interpreting data (interpretation) 64%, applying concepts 72%, and communicated 79%.