Rahmi, E. G.; Silvina, R. ANALISIS VALIDITAS TERHADAP PENGEMBANGAN PENUNTUN PRAKTIKUM IPA BERBASIS MODEL PEMBELAJARAN COLLABORATIVE TEAMWORK LEARNING (CTL) UNTUK SISWA SMPN SE KECAMATAN BONJOL KABUPATEN PASAMAN: (Analysis of the Validity of the Development of Scientific Practicum Developers Based on Collaborative Teamwork Learning (CTL) Learning Models for Students SMPN, Bonjol Sub District, Pasaman District). Perspektif 2019, 10, 1-6.