D.A. Sari, E. Ellizar, M. Azhar
Problem Based Learning (PBL) is one of the instructional models suggested in 2013 curriculum and can be applied in the development of module so that students become active in the learning process and improve critical thinking ability. This study is aimed to develop and determine the level of validity and practicality of PBL module on electrolyte and nonelectrolyte solution to improve critical thinking ability. It adopts Plomp development model and did in two schools namely SMA N 1 Sijunjung and SMA N 7 Sijunjung. The research instrument used in form of questionnaires and analyzed by kappa cohen formula. The result showed that the developed module has a very high category of validity and practicality. Thus, the developed module contains correct information scientifically and easy to use by students and teachers in learning. The PBL steps in the module lead the students to discover the concept independently and train their critical thinking ability. © 2019 Published under licence by IOP Publishing Ltd.
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Padang, Jl. Prof Hamka, Padang, 25131, Indonesia
