Development of Teaching Material to Support Merdeka Curriculum on the Acid-Base of Phase F

This research aims to develop teaching materials support Merdeka curriculum learning on acid-base phase F SMA/MA material that is valid and practical. educational development uses the Plomp model developed by Tjeerd Plomp. The procedure includes initial investigation or prototyping stages. subjects in this study were UNP chemistry lecturers, SMA Negeri 2 Padang teachers, Phase students of Padang. instruments used validation sheets teacher learner response questionnaires. results indicate / MA has been assessed five expert validators are criteria with an average 0.86, efficient category responses obtaining a percentage 87%, student 97%. proven increase students' motivation understanding, as well facilitate teachers process curriculum.