PENGEMBANGAN BAHAN AJAR IPA TERPADU BERBASIS SALINGTEMAS PADA TEMA ENERGI - Hasanah, Uswatun; Dewi, Novi Ratna; Parmin, Parmin (Department of Integrated Science, Faculty of Mathematics and Natural Sciences, Universitas Negeri Semarang in Collaboration with Perkumpulan Pendidikan IPA Indonesia, 2013)