Yerimadesi Yerimadesi, Desi Lisa Rosanna, Andromeda Andromeda, Guspatni Guspatni
This study is a part of educational design research on guided discovery learning (GDL) based e-module on the topic of salt hydrolysis. The e-module had passed the test of validity and practicality after the development. Quasi-experimental research using a control-group pretest-posttest design was done to analyze the effectiveness of the GDL-based salt hydrolysis e-module on higher-order thinking skills (HOTS) of students. The population of the research consists of all grade XI students at one of SMAN in Padang City, Indonesia in the academic year of 2021/2021. The sample was selected by the purposive sampling technique. Research data obtained with a multiple-choice test were analyzed through the N-gain test and t-test. Results of the N-gain test showed that the HOTS of students in the experimental class (0.64) were higher than those in the control class (0.55). Results of the t-test showed that the value of the hypothesis testing was less than 0.05 (2-tailed). Therefore, it can be concluded that the salt hydrolysis e-module which is based on the GDL model is effective in improving the HOTS of grade XI students at SMAN 14 Padang. The e-module is suggested to be used for senior high school learning. © 2023 Author(s).
Department of Chemistry, Faculty of Mathematics and Sciences, Universitas Negeri Padang, Padang, Indonesia
