Implementasi Prinsip-prinsip Montessori dalam Pembelajaran AUD Durrotun Mumtazah, Lailatu Rohmah | 91 GOLDEN AGE Jurnal Ilmiah Tumbuh Kembang Anak Usia Dini Volume. 3 No. 2. Juni 2018 e-ISSN: 2502-3519 Implementasi Prinsip-prinsip Montessori dalam Pembelajaran AUD Durrotun Mumtazah Lailatu Rohmah Email: durrotunmumtazah45@gmail.com Golden Age Jurnal Ilmiah Tumbuh Kembang Anak Usia Dini, Vol. 3 No. 2 Juni 2018 Diterima: Direvisi: Disetujui: e-ISSN: 2502-3519 DOI : Abstract This study aims to find out how the implementation of Montessori principles in learning, what are the supporting and inhibiting factors for implementing Montessori principles in learning, Impact uses the Montessori principle in learning about child development in the Play Group (KB) Safa Islamic Preschool Yogyakarta. This type of research is descriptive qualitative research. The research subjects were family planning owners, family planning heads, family planning teachers and children of KB Safa Islamic Preschool Yogyakarta. The object of this research is learning Montessori principles in KB Safa Islamic Preschool Yogyakarta. Data collection uses interview, observation, and documentation techniques. Data analysis is done by reducing data, displaying data, and drawing conclusions. The technique of evaluating the validity of data uses triangulation techniques and sources. The results of this study indicate that First, Implementation of Montessori principle based learning through five Montessori learning model areas, namely the sensorial area, the area of mathematics, the area of science and culture, the area of language and the area of life skills that runs with a system of cross-age in each group. Second, supporting and inhibiting factors, the supporting factors include planning with Montessori education counselors, Montessori education and training, all core teachers are scholars. The inhibiting factors are the limitations of learning media, the occurrence of teacher changes, the lack of understanding of the guardian of students regarding cross-age learning. Third, the impact of the Montessori principle on children's development is to be independent, critical and increase social development. Abstrak Penelitian ini bertujuan untuk mengetahui bagaimana implementasi prinsip-prinsip Montessori dalam pembelajaran, Apa saja faktor pendukung dan penghambat implementasi prinsip Montessori dalam pembelajaran, Dampak menggunakan prinsip Montessori dalam pembelajaran terhadap perkembangan anak di Kelompok Bermain (KB) Safa Islamic Preschool Yogyakarta. Jenis penelitian adalah penelitian kualitatif yang bersifat diskriptif. Subjek penelitian adalah pemilik KB, kepala KB, guru KB dan anak-anak KB Safa Islamic Preschool Yogyakarta. Obyek penelitian ini adalah pembelajaran prinsip Montessori di KB Safa Islamic Preschool Yogyakarta. Pengumpulan data menggunakan teknik wawancara, observasi, dan dokumentasi. Analisis data dilakukan dengan cara reduksi data, display data, dan penarikan kesimpulan. Teknik penilaian keabsahan data menggunakan triangulasi teknik dan sumber. Hasil penelitian ini menunjukkan bahwa Pertama, Implementasi pembelajaran berbasis prinsip Montessori melalui lima area model pembelajaran Montessori yaitu area sensorial, area matematika, area ilmu pengetahuan dan