Improvement Students’ Level of Proof Ability in Abstract Algebra Trough APOS Theory Approach

This study intends to improve students’ proof ability in abstract algebra course based on teaching and learning through APOS theory approach and to know level of students understanding in abstract algebra. This research is pre-experiment one shot case study design. The sample were the students who participating in the abstract algebra course academic year 2018/2019 at Andalas University. Instrument used in this study was test of proof ability which consisted of three proof test, that measures the ability of proof construction. Level of students’ ability in proofs are grouped into three categories, namely: level 1 (sintactic), level 2 (concrete semantics), and level 3 (abstract semantics). The results showed that: (1) 30% of students achieved level 3, 50% of students achieved level 2, 14% of students achieved level 1, 3% of students achieved level 0 and 3% excluding the category of level 0, level 1, level 2, and level 3. (2) Most of student have difficulty in learning Abstract Algebra, (3) The students trained with teaching and learning based on APOS theory approach had the mean score of the ability to proof different from 45.00 at the significant level of .05. (4) There a gender gap in students ability to proof in Abstract Algebra, but statisticcally not significant.

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