Saragih, N. D., Bukit, N. and Sriadhi, S. (2022) “THE EFFECTIVENESS OF LKPD IPA BASED ON SCIENCE PROCESS SKILLS TO IMPROVE STUDENTS’ CRITICAL THINKING SKILLS ON SINGLE SUBSTANCE AND MIXED SUBSTANCES MATERIAL”, Jurnal Ilmiah Teunuleh , 3(1), pp. 61-68. doi: 10.51612/teunuleh.v3i1.99.