Strategy or technique is an important tool in teaching learning activity. Teachers need appropriate strategy to make students interested in the lesson. Strategy is used by teachers to convey the material and make students enjoy in receiving the material. In this thesis, the strategy used is Concept Attainment Strategy.
This thesis discusses The Effectiveness of Concept Attainment to teach English Speaking at the tenth grade students of SMA Walisongo Semarang in the Academic Year of 2015/2016. The objective of this study is to describe students’ achievement during the implimentation of Concept Attainment Strategy and to identify whether Concept Attainment Strategy in improving students’ speaking skill at SMA Walisongo Semarang Grade X in the Academic Year of 2015/2016.
This study used experimental design. In this research, the researcher used oral tests given pre-test and post-test. Before giving post-test, the researcher gave treatment to experimental class (the students who were taught using Concept Attainment Strategy) and the control class (the students who were without using Concept Attainment Strategy or conventional class). Then the researcher gave post-test both control and experimental classes to know the students’ motivation on speaking skill. After collecting the data, it was found that the pre-test average score of experimental class was 66,681 and the control class was 72,608. Meanwhile, the post-test average score of experimental class was 83,909 and the control class was 66, 478. It was obtained that t-test was 14,349 and t-table was 1,684. The t-test was higher than t-table (14,349 > 1,684). It means that researcher concludes that Concept Attainment Strategy was effective in teaching students’ on speaking skill at SMA Walisongo Semarang in the Academic Year of 2015/2016.