cover-vol2-no1 2019Volume 2 Number 1 p-ISSN: 2621-3761 e-ISSN: 2621-2889 published by Variation of Mixed Banana peel Substrate and Cow Dung in Biogas Pressure as a Learning Source for Renewable Energy Sources Puspitawati Puspitawati, Riswanto Riswanto, Nyoto Suseno An Experiment Design for Determining the Volume of Traditional Eucalyptus Oil with Variations in Fluid Flow Speed Nur Hamida Siregar, Moh. Toifur, Yudhiakto Pramudya An Analysis of Graduate Students’ Conceptual Understanding in Heat and Temperature (H&T) Using Three-Tier Diagnostic Test Moh. Irma Sukarelawan, Jumadi Jumadi, Nurulhuda Abdul Rahman Investigating The Effects of Activation Temperature on The Crystal Structure of Activated Charcoal From Palm Bunches (Arengga Pinnata Merr.) Vivi Hastuti Rufa Mongkito, Muhammad Anas, Wisda Puspita Bahar Flipped Classroom As a Millenial Teaching Model Irnin Agustina Dwi Astuti, Yoga Budi Bhakti, Ria Asep Sumarni, Dwi Sulisworo, Moh. Toifur 2621-3761 p-ISSN e-ISSN 2621-2889 Publisher address: Universitas Ahmad Dahlan (UAD) Kampus 2 Universitas Ahmad Dahlan Jalan Pramuka No. 42, Pandeyan, Umbulharjo, Yogyakarta 55161 Telp. +62 274 563515, ext. 4902; Fax. +62 274 564604 Email: irip@mpfis.uad.ac.id