ANALISA KESULITAN SISWA SMA KELAS X DALAM PEMBELAJARAN KIMIA PADA PENDEKATAN CONTEXTUAL TEACHING AND LEARNING BERBASIS TWO TIER MULTIPLE CHOICE INSTRUMENT

Abstract

The purpose of the study was to analyze the difficulties of senior high school students at class X in learning chemistry using Contextual Teaching And Learning—based Approach on Two Tier Multiple Choice Instruments. This research is a descriptive research. The subjects in this study were students of class X SMAN 1 Masbagik. The samples in this study were determined by purposive random sampling which are the classes that have not reached the KKM, X IPA 2 class consists of 30 students and X IPA 3 32 students. X IPA 2 class will be taught conventionally meanwhile X IPA 3 class will be taught using the CTL approach. The instrument used to measure the students' level of difficulty is a two-tier multiple choice diagnostic test. The two tier multiple choice diagnostic test is a test with 2 tiers where tier 1 contains the answer and tier 2 contains the reason. The highest error percentages of conventional class was 54.1%, 26.8% understand, and 9.6% was misconception. While the CTL had lower error with the perentage 25.55%, 57.% understand, and 7.86% was misconception. It means that CTL affect sudents’ learning achievent about the concept of oxidation-reduction reactions.