Suwadarma, K. W., Sudiatmika, A. A. I. A. R. and Suja, I. W. (2020) “The Validity and Practicality of the Chemistry Learning Device by Using STEM-PjBL Model”, Jurnal Ilmiah Pendidikan dan Pembelajaran, 4(1), pp. 19–28. doi: 10.23887/jipp.v4i1.24150.