Implementation of Small-Scale Chemistry Lab to Improve Student Cognitive Abilities on the Subtopic of Colloid Properties

Abstract

This study aims to investigate the effect of the Small-Scale Chemistry Lab to improving the cognitive abilities of students who are studying colloid properties. Cognitive abilities studied are arccoding to Bloom's taxonomy. The research conducted was pre-experiment with one group pre-test post-test design. Participants involved in this study were 40 students of class XI high school in Bandung Regency. The instruments used in the study included a written test and questionnaires. The instruments in this study used the content validity test by supervisors who are experienced in small-scale chemistry lab. Beside that, a reliabilty test was also carried out with value 0.79. The increased cognitive abilities calculated based on the difference pre-test and post-test scores using the N-gain formula, the data has been processed are then analyzed descriptively. The results showed that most of the students' cognitive abilities had increased as indicated by the N-gain value 0.63. Based on these findings, it is recommended that small-scale chemistry lab can be applied to the learning process of other chemistry topics that have a characteristic compatibility between the learning material and small-scale chemistry lab for the development of students' cognitive abilities.