Analysis of Student Chemistry Learning Difficulties on Buffer Solution at SMA Negeri 2 Banjar Buleleng Bali

Abstract

This research aims to describe and explain students’ learning difficulties in chemistry, the distribution of students’ learning difficulties, and the causative factors of students’ learning difficulties to understand the topic of buffer solution at SMA Negeri 2 Banjar. The data sources for this research were 154 students from all class XI MIA and one chemistry teacher at SMA Negeri 2 Banjar Buleleng Bali. The research method used a quantitative and qualitative method. Quantitative methods are used to collect data on student learning difficulties by using tests and the factors that cause learning difficulties using a questionnaire, while qualitative methods are used to collect data on factors that cause learning difficulties using observation and interview guidelines. Data were analyzed descriptively by grouping students’ learning difficulties into five types includes not difficult, less difficult, quite difficult, difficult, and very difficult. The result of this research showed that students have a difficulty in learning chemistry to understand of buffer solution topic. (1) The students’ learning difficulties on buffer solution topic was ranged between less difficult until very difficult. (2) The distribution and level of student learning difficulties in indicators explaining the definition of buffer solution, analyzing the constituent components of buffer solution, determining buffer and non-buffer solution, calculating pH of acid and base buffer solution, calculating pH of a buffer solution by adding few amount of acid or base or dilution, and explaining the function of buffer solution in the body of living creatures, are difficult enough (44,97%), difficult (74,57%), less difficult (31,66%), difficult enough (43,51%), very difficult (81,82%), and difficult enough (36,36%), respectively. (3) Internal factor that caused learning difficulties is less understanding toward supporting concepts of buffer solution topics and buffer solution concept, the lack of student’s ability in mathematics, less learning interest and motivation toward chemistry. The external factor that caused learning difficulties is teacher’s teaching method, negative effect from friend at the same age, and less conducive learning conditions and times.