SUSIYANI, R. Upaya Peningkatan Hasil Belajar IPA Melalui Model Problem Based Learning ( PBL) Tipe Kooperatif Two Stay Two Stray ( TSTS ). JURNAL LENTERA : Kajian Keagamaan, Keilmuan dan Teknologi, v. 21, n. 2, p. 171-181, 3 set. 2022.