The application of STAD-Cooperative Learning Model: Efforts to increase motivation and Learning Outcomes of students in Class 5 SD N 07 Ledok Salatiga in Mathematics subjecth in Folding Symmetry and Rotating Symmetry topics

This study aims to improve the motivation and mathematical achievement of a two-dimensional figure about folding symmetry and rotary symmetry for fifth-grade students of SD Negeri Ledok 07 Salatiga in the even semester of 2018/2019. This research was conducted in the fifth grade of SD Negeri Ledok 07 Salatiga for one semester. Subjects in the study were all fifth-grade students as many as 23 students, consisting of 12 women and 11 men. This study used two cycles of action. In each cycle, it was carried out in 4 stages, namely planning, acting, observing, and reflecting. The data collection was through documentation, observation, and test results. Whereas, the research instruments were in the form of a list of values, observation sheets, and written questions. Data were obtained from observers, consisting of teachers as collaborators and the lesson grid. Data analysis used comparative descriptive followed by reflection. In the initial conditions, it turned out that learning outcomes were still low, as evidenced by students who scored 70 or more were still seven students (34.8%). In the first cycle, students who scored 70 or more were 15 students (65.2%). In cycle II, students who scored 70 or more increased to 21 students (91.3). Then, it can be concluded that the Student Team Achievement Division model can improve motivation and learning outcomes for mathematics in the fifth grade at SD Negeri Ledok 07 Salatiga in the second semester of 2018/2019. Mudarrisa: Jurnal Kajian Pendidikan Islam, Vol. 11, No. 2, 2019 115


INTRODUCTION
Learning in Elementary Schools is carried out by the teacher as a manager, so it is necessary to understand how students carry out learning activities.
In this process, the teacher acts as an appropriate mediator for the learning process of students. The teacher's function as a mediator is expected to be able to motivate students in academic matters at school (Suduc, Bizoi, & Gorghiu, 2015). From the observations, it was found that the learning outcomes of 5th-grade students in semester 2 of SD Negeri Ledok 07 Salatiga 2018/2019 were not significant. It is evidenced by the value of learning outcomes that only seven students who scored 70 and 15 others scored below 70. It proves that 65% of students have not reached completion. Conventional methods used by teachers should need to be evaluated with other methods and or modifications to support the achievement of student learning outcomes.
They were not using the right learning media, for example, the use of the STAD cooperative learning model to explain the material of folding symmetry and rotary symmetry that is shorter, faster, and more precise.
Students were also "forced" to follow the speed of average thinking class, so students who had below-average/slow thinking ability would feel left behind, as well as students who had above average thinking ability felt not challenged. Students were not happy about mathematics, teachers were not creative in teaching and learning activities, and they have not yet applied the Cooperative Student Team Achievement Division (STAD) model in mathematics learning. Based on field facts, less than 50% of students did not pay attention to the teacher's explanation by showing no interest in mathematics, suspected it is caused by, among others, the teacher did not have variations in the use of learning models. The author carried out Classroom Action Research (CAR) in the hope of increasing mathematics learning outcomes for the fifth-grade students of SD Negeri Ledok 07 in semester 2 of 2018/2019 on the average value of 70 and above, and all students achieve the completion in learning mathematics.
STAD-based research is very effective to be used in mathematics learning in elementary schools. The use of the STAD method can support students to be creative in implementing learning and in groups to help one another in completing lesson assignments (Bhoke, 2016: 104). In addition, the STAD method and Team Game Tournament (TGT) combined can improve elementary students' understanding in learning mathematics (Menanti & Rahman, 2015: 3839).
Increased learning motivation of students in grade 5 at SDN Ledok 07 can appear with the teacher applying the STAD cooperative learning model, then the STAD cooperative learning model can be used as an approach that can be applied in learning. In addition, the use of the STAD method can maximize student learning outcomes, especially mathematics, foster student learning motivation in mathematics, eliminate the fear of thinking about mathematics, train students' skills in expressing opinions, prove the truth of the formula by using props, and provide benefits for educators. The implementation of CAR in this study can help teachers in the process of varying learning approaches that can improve teaching and learning activities, reduce errors in learning, and increase the ability of students, especially in completing the measurement of the twodimensional figure (Astriyani, et al., 2018: 808).
The behavior of students in learning, interest in learning, attention in learning, concentration in learning, perseverance in learning are the reflection of learning motivation (Ardhana et al., 2014: 33), according to Kusnadi (2002: 330), they are efforts to bring the enthusiasm of others.
This opinion can be concluded that learning motivation is a change in behavior of students, characterized by the emergence of interest, attention, concentration in learning to achieve the expected goals in learning. STAD Cooperative Learning type has several advantages (Slavin, 1997: 17), including (1) Students work together in achieving goals by upholding group norms, (2) Students actively help and motivate enthusiasm to succeed together, (3) Being active as peer tutors to further enhance group success, (4) Interaction between students as they increase their ability to express ideas. According to Slavin (2008: 188), the steps that must be taken in STAD learning are: (1) Presentation of material by the teacher, (2) Students join in groups of 4-5 people, (3) The teacher gives the task to the group to do the exercise/discuss an advanced topic together, (4) Test/quiz or cross-question between groups, (5) Strengthening from the teacher.
According to Soewarso in Larasati (2005: 38), weaknesses that might occur are: (1) There is dependency, so students who are slow thinking cannot practice independent learning, (2) Requires a long time so that the target of curriculum achievement cannot be met, ( 3) Not being able to apply the subject matter quickly, and (4) Assessing individuals and groups and giving gifts makes it difficult for teachers to implement them.
These weaknesses have caused many factors to affect student learning outcomes.
Achievement of learning outcomes reflects the extent to which students have been able to achieve the goals set in each subject. Numbers from 0 to 10 can express the description of student achievement (Arikunto, 1998). Meanwhile, Arifin (1999) said that learning achievement is the achievement of an effort, ability, and attitude of a person in completing a matter, in the field of education. Measurement of learning achievement (Scott, 2004: 42) is based on a variety of different forms. The most common measurement is taken from test scores, either oral, written or assignment. In this study, the learning outcomes of students in the cognitive domain of mathematics learning were compared between initial and final test scores, using the cooperative learning approach of the STAD model.
The STAD method was regarded as necessary as a manifestation of cooperative learning, which is better than individual learning (Tosto et al., 2016: 261). Individual learning models will teach students to learn alone to achieve learning goals, and there is almost no interaction with peers. It will teach students to get accustomed to the view that the achievement of learning goals has nothing to do with other students. Thus, the lives of students are focused on the interests of their achievements and ignoring other friends. The cooperative learning model is a learning model to achieve academic standards for students who are grouped in several small groups and guided by educators consisting of various scientific disciplines working together to deliver learning material to students. There is an element of positive interdependence between educators, shared responsibility in helping one another among educators with efforts to always improve their abilities. Teachers feel they have the same goals in education for all students, and the learning process involves all components to contribute to all students, and all are responsible for students in unlimited time (Priyatni, 2016: 292).
According to Johnson & Johnson (2014), the cooperative learning approach is one of the teaching approaches applied to small teams, consisting of students with different levels of ability. Group achievement in achieving learning outcomes and completing tasks together in groups is the primary goal. Cooperative teaching and learning approaches can be used for each subject at each grade level without a specific curriculum, and it can develop and use critical thinking skills in the implementation of peer training, interdependent positively to develop social skills for the common good without distinguishing gender, race, culture, and language.
Small groups are not temporary in collaboration (working only in class), but cooperation is ongoing so that individual competition is unfairly changed in cooperative structures.
The cooperative learning approach is to enhance cooperation in groups, thereby changing the way of individualistic learning that is competitive in the form of cooperative learning (Yamtim & Wongwanich, 2014: 922). Achievement research on cooperative learning approaches can be classified into three categories, namely: higher student achievement and greater productivity, mutual attention to mutual support and forms of responsible relationships, better mental health, social competence, respect for others (Johnson & Johnson, 2014: 214).
Improving the quality of schools is not determined by the building, curriculum, schedule, and learning tools, but the school focuses on the interaction between humans that are regulated in the school curriculum.
The collaboration will determine the effectiveness of these schools.
Collaboration between students is fundamental in learning. Cooperative learning begins by forming group work in the classroom. The expected outputs are students with improved learning outcomes, better relationships, and positive psychiatric conditions. Prerequisites and foundation of cooperative learning for instructional innovation include an integrated curriculum, a variety of commonly known languages, critical thinking, active writing and reading, and an ability to interpret authentically. Cooperative learning to improve student productivity, morale, and teacher professional appreciation needs to be formed in a team with the aim of (1) Improving sustainable skills, and (2) Teaching staff meetings. It is to present the mindset of the administrators, how school management should be, and joint agreement in implementing a model in learning activities (Johnson & Johnson, 2014: 312). They suggest that teaching staff meetings are carried out in an orderly and regular manner conducted by schools both in the form of formal and informal meetings as well as training and development. Cooperative learning has three positive things, namely: achieving good learning outcomes and higher learning productivity; a willingness to share, support each other, and be responsible; increased psychological health, sociological, and self-confidence.
In addition, the STAD method can encourage students to be skilled in utilizing learning media (Ningsih, 2015(Ningsih, : 1920. Therefore, the research focuses on the use of the STAD method to increase the learning motivation of 5th-grade students at SD Negeri Ledok 07 Salatiga. The novelty of this research is about the application of the STAD method in motivating elementary school students in Mathematics.

Research Methods
This research was conducted by the experimental method and class action (CAR). This class action research was conducted in the 2018/2019 academic year in the even semester for four months. Data collection used techniques: (1) test techniques, to determine the ability before action was taken, when action taking, and after the action was completed (end of cycle), (2) questionnaire distribution, in order to know cooperation in the group, (3) Observation: for data collection relating to collaboration with groups, (4) Documentation: in order to collect data in the condition prior to conducting action research.
The place of research was applied to grade 5 of SDN Ledok 07.
The target in this study were all grade 5 students in the even semester of the 2018/2019 academic year on folding symmetry subjects at SD Negeri Ledok 07 totaling 23, consisting of 7 men and 16 women. Additional data derived from the scores obtained by students before the CAR was carried out to determine the initial ability before the research was held.
One month after that was used to collect the necessary data and took action on the target class. In the next two months, the authors took advantage of the analysis of the data obtained, followed by discussion. In the fourth or last month, the researchers took advantage of making reports on the results of action research -the achievement of learning outcomes obtained through documentary studies. The measuring instrument used as an evaluation in the form of a test was prepared by the researcher, fifthgrade teachers, and guides. The final condition was seen in the learning outcomes of the first cycle and the second cycle. The assessment material in the form of questions must be tested for validity by being tested in a class that was not used for research. The results of data of cooperation and cooperative learning motivation of the STAD model from interview techniques, observation techniques, and questionnaires were analyzed by using descriptive qualitative analysis. Then, the learning achievement data obtained from tests and documents were analyzed with descriptive comparative.

The flow of Classroom Action Research Method
Classroom action research was conducted in two Cycles, namely Cycle I and II with the following description: Cycle I The purpose of this cycle was the formation of discussion groups and solving problems faced by students in the learning process. The formation of learning discussion groups was expected that teaching and learning activities and achievement of learning outcomes would increase: (1) The preparation period; researcher, teachers, and school principals prepared material in the form of preparing lesson plans, learning group formation techniques, and the formation of student groups between 5 to 6. (2) Action implementation; it must be in accordance with lesson plans that had been prepared. It was ensured that all students learned actively in groups. During the learning process, observations were held by the researcher, Principal, and guides. (3) The next step was to reflect on the evaluation of learning implementation in cycle I based on tests of learning achievement results, observation, interviews, and questionnaires, in order to see the level of progress in conducting research, obstacles encountered, and other supporting factors.

Cycle II
Based on the results of cycle 1 reflection, then cycle 2 was done by taking into account the constraints faced by the supporting factors in the implementation of Cycle 1. The implementation of the second cycle was the same as the first cycle, but the group members were reduced from 5-6 to 3-4 students per group.

DISCUSSION
Before the research began, an analysis was carried out to map the learning outcomes of students, so that the following data were obtained.

Figure 1. Diagram of learning outcomes for grade 5 students of SD Negeri
Ledok 07 Salatiga prior to the implementation of the study Diagram in Figure 1 showed the results of the analysis that a total of 4 students out of a total of 23 students received a score of 4150, a total of 12 learners received a score of 5160, a total of 4 learners received a score of 6170, a total of 3 learners received a score of 7180, and there were no students who scored 81100. It indicated that there was one notachieved in the acquisition of a high-value score scale. Furthermore, the cycle activities began with the first cycle, followed by the next cycle.

Cycle I
Cycle I was carried out with the acquisition of a total of 23 students getting a score of learning outcomes of 4050, 2 students obtained a score of learning outcomes 5160, a total of 6 students obtained a score of learning outcomes of 6170, a total of 10 students obtained a score of learning outcomes 7180, 5 students received a score of learning outcomes 8190, and no students who obtained a score of learning   Figure 2 also shows that out of 23 students, the smallest number was 50, and the highest number was 80. Students who got the number 70 or more were 15 students, smaller than 70 were eight students, and the mean value was 66.82. It can be concluded that learning in the first cycle has improved, yet, the attainment of completeness was still 65.21%.
The use of the STAD method and motivating in the form of encouragement, enthusiasm, ideas, and togetherness to students can improve the learning outcomes of students () (Hobri et al., 2018: 485;Kiemer et al., 2015: 9596;Triyuni, 2016: 95). It was proven as observed in Tabel 1. Students dare to answer questions and dare to ask the teacher if they have difficulty, more confident, as it can be seen in the above table. The motivation given to students could provide the effect of encouragement, conceptual togetherness, and implementation by placing students in the right situation (Hobri, Dafik, 2018;Katharina Kiemer, Alexander Groschner, Ann athrin Pehmer, 2015).
Thus, the learning outcomes of students in Cycle I experienced significant progress. It was indicated by the results of an average learning value of 65.21. The implementation of the 1st cycle learning process had not been carried out optimally by the teacher, both in the use of learning tools and teaching methods, so that student learning outcomes were still lacking. The cooperative learning model of the STAD model had not been able to motivate students to learn, and the task had not been done well. Overall, of the 23 students, 15 students met the minimal completeness criteria (KKM), and eight other students had not yet reached the KKM, 65.21%. Thus, it was necessary to continue Cycle II.

Cycle II
From the results of the second cycle of research, one student obtained a score of learning outcomes 4150, two students obtained a score of learning outcomes 5160, seven students obtained a score of learning outcomes 6170, eight students obtained a score of learning outcomes 7180, six students received a score of learning outcomes 8190, and there were no students who obtained a score of learning outcomes 91100. Student learning outcomes scores in Mathematics in Cycle II are shown in Figure 3. Figure 3. Diagram of the results of the Cycle II learning outcomes Observations in Cycle II showed that teachers delivered Mathematics lessons using the STAD method appropriately and provided encouragement to students to be more attentive and active. As in Table 1. Teacher motivation and encouragement will support students' learning performance. It is supported by the statement that the encouragement and motivation of teachers can foster positive attitudes and logic in learning mathematics, as well as interpersonal relationships in groups (Hobri et al., 2018: 487).

Cycle I and Cycle II
The completeness limit was a score of 70 or more than a score of 70.
Before using the STAD method, a total of 7 students or around 34.78%   Table 2.  Table 3 showed that the learning achievement of students in Cycle I and Cycle II indicated that in the learning process, a professional and competent teacher is needed, which influences failure and success in the learning process. Based on theories relating to learning, the intelligence of educators in managing teaching and learning activities includes using strategies, choosing methods, and learning media (Gurses et al., 2015: 4547). The process of teaching and learning managed to run well, as evidenced by the completeness, which reached 91.3% or a total of 21 students out of a total of 23 students who achieved completeness with an average score of 77.39%.
It shows that the STAD cooperative learning model can facilitate students to work together in small groups and help each other to learn.
Cooperative learning refers to a variety of learning methods in which students work together in a small group to help each other learn the contents of the material. Cooperative learning allows students to help other students, discuss, and argue for receiving knowledge and fill gaps in understanding.

CONCLUSION
Based on the data in this study, an effective teaching and learning process in learning Mathematics subjects about folding symmetry and rotary symmetry by utilizing optimal media and teaching aids can further stimulate students' participation, as evidenced by the author's experience to have a research in the fifth grade of Sekolah Dasar Negeri Ledok 07 Salatiga in the even semester. It is indicated by the mathematics learning achievement based on the completeness of the results before the improvement (Pre-cycle) with a percentage of 34.78%, Cycle I with a percentage of 65.21%, and Cycle II as much as 91.30%. From the acquisition of these values, the score of learning outcomes in pre-cycle up to Cycle II experienced a change of 56.52%.