IIN INDRIYATI. Improvement of Student Motivation and Learning Outcomes through The SETS Approach to Environmental Pollution Material at Class VII E SMP 1 Wonosari Semester 2 Academic Year 2017/2018. Ideguru: Jurnal Karya Ilmiah Guru, v. 4, n. 2, p. 61-68, 1 Nov. 2019.