Abstract:
Action Research has been conducted classes to improve learning outcomes on the concept of geometrical in the design of experiments mathematics lecture. Research conducted at the students class of IV SD Negeri 025 Bagansiapiapi for 2011/2012 academic year. Research subjects were the consists of 18 students (9 male and 9 female). Research carried out with 2 cycles, where the first cycle consisted of 3 sessions and 1-time test (quiz). Whereas the second cycle consists of 3 meetings and 1-time test (quiz). The observed parameters were studied and the results of students activity during the learning process, which conducted the data analysis descriptive. The results showed that increase learning outcomes after the implementation of Two Stay Two Stray learning model. Students who earn students who achieve mastery criteria Minumum 60 on the base score 8 students (44,4%) increased in the first cycle to 11 students (61,1%) and increased again in the second cycle to 18 students (100%). Application of Two Stay Two Stray learning model was considered effectively applied mathematics lecture on geometrical design concepts.
