This research aims to develop a buffer solution module based on guided inquiry and multiple representations and reveal validity, practicality, and effectiveness. This module adapts to the demands of a revised 2013 curriculum that guides students to discover their own concepts and helps students understand the concept of buffer solutions through multiple representations. This type of research is development research, the development model used is the Plomp model which consists of three stages, namely preliminary research, prototyping stage, and assessment phase. The subject of the research was the eleventh grade students. The research instrument used was questionnaire validity sheet, practicality sheet, and learning outcome test. The module is validated by the validator and revised to get a valid module. Valid modules are tested to find out the practicality and effectiveness in the field. The results of the validity sheet analysis show that the module has an average kappa moment of 0.77. This shows that the module is valid with a high category. The results of the field trial showed the practicality of the product based on the teacher’s response was 0.73 and the student’s response was 0.76. This score includes high criteria. This is evidenced by the product effectiveness test which can be seen from the increase in the initial and final test scores from 18.8 to 84.6. This improvement shows that effective modules are used in the learning process. This is supported by the n-gain value of 0.7 which states that the module is effective with high criteria.
This study analyzed the understanding of first-year students on the concept of chemical equilibrium. It involved 30 first-year students in the faculty of mathematics and natural sciences of Universitas Negeri Padang. The students’ understanding was explored using a conceptual test. The result shows that generally, students have misconceptions about the concept of chemical equilibrium especially when the reaction reaches equilibrium as reported by many studies. The results of this study have implications for the lecturers in planning the general chemistry learning process, especially on the chemical equilibrium topic.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.