IMPROVEMENT OF MATHEMATICAL REASONING THROUGH
SCIENTIFIC APPROACH WITH THE DISCOVERY LEARNING
MODEL ON GRADE VIII E OF MTs MUHAMMADIYAH
OF BLIMBING (CAR IN GRADE VIII E OF
MTS MUHAMMADIYAH OF BLIMBING
YEAR 2013/2014)
PUBLICATION ARTICLE
Submitted as Partial Fulfillment of The Requirements
for Getting Bachelor Degree of Education
in Mathematics Department
by :
INTAN TAHMALIA
A 410 102 016
FACULTY OF TEACHER TRAINING AND EDUCATION
MUHAMMADIYAH UNIVERSITY OF SURAKARTA
ABSTRACT
IMPROVEMENT OF MATHEMATICAL REASONING THROUGH SCIENTIFIC APPROACH WITH THE DISCOVERY LEARNING MODEL ON GRADE VIII E OF
MTs MUHAMMADIYAH OF BLIMBING
(CAR IN GRADE VIII E OF MTS MUHAMMADIYAH OF BLIMBING YEAR 2013/2014)
Intan Tahmalia1), Nining Setyaningsih2), 1) Student of Mathematics Department of UMS 2) Lecturer Staff of Mathematics Department of UMS
Email:
1) intan_tahmalia@yahoo.co.id 2) ningsetya@yahoo.com
The purpose of this research is to improve students' of mathematical reasoning through scientific approach with the discovery learning models on the students of grade VIII E MTs Muhammadiyah Blimbing. This research used a qualitative approach by the design of Classroom Action Research (CAR). Recipient of the action is the subject of the students of grade VIII E of MTs Muhammadiyah Blimbing consist of 6 boys and 24 girls and given of action that is subject of mathematics teacher who collaborate wiht researchers. The methods used to collect data are done by observation, test, documentation and field notes. The technique of data analysis consists of data reduction, data presentation and data conclusion. Based on the research result it can be conclude that (a) the ability of the students filed prior to the alleged act of as much as 30% (9 students), before the action 50% ( 15 students) and the the last action 80% (24 students), (b) the ability of students to give reasons / evidence of the truth before the action as much as 16.6% (5 students), before the action 26.6% (8 students) and the last action 66.6% (20 students), (c) ability to find a pattern of symptoms prior to the action as much mathematical 23.3% (7 students), before the action 40% (12 students) and the last 73% (22 students).
INTRODUCTION
In the history of the development of mathematical science is one of the important science. Math is different from other sciences, because in mathematics learning should be continuous, diligent practice and discipline. But in the field of mathematics education is faced with the many problems that of low outcomes. One reason is the students assume the math is a difficult subject. The students think that math is very frightening of specter.
The problem-solving in the mathematics is a very important a part in the learning of process. Having skill in the problem solving include of understanding the problem, plan the problems, problems solving and rechecking of the results. Because problem solving is one thing that is very important in learning so as to encourage the students to think in the that. In addition to problem-solving ability, one skills in the math learning are required of mathematical reasoning.
According Cholil in Sobur, (2010: 209) states that the reasoning is a thinking activities to obtain a conclusion from the premises was known. In general reasoning to grouped into two, namely inductive reasoning and deductive reasoning. Inductive reasoning is reasoning that lead to the general conclusion than of its statement, otherwise the deductive reasoning is reasoning whose specific conclusions than of its statement.
The skills of mathematical reasoning students are essentially required to think of creative learning at the time. Reasoning must be carried out on students, because the reason the student can find out the results of their study. If students have high of reasoning so that their results also high, but if the student have poor of reasoning so that their result learning is low too.
to ask the alleged (30%); b) the student is able to give a reason/ proof of correctness (16.6%); c) the students were able to find a pattern of symptoms mathematical (23, 3%). The low of mathematical reasoning ability graders VIII E MTs Muhammadiyah of Blimbing caused by teachers in delivering lessons are using lecture method. Teacher-centered learning causes be less-active of students in learning. Students tend to listen to the teacher. The efforts to addressed the problem in improving students' mathematical reasoning with the using of approaches and models of learning. One using of approaches and models are scientific approach with the discovery learning models.
According of the Kemendikbud (2013) stated that the scientific approach is the approach to learning includes of digging through observation, questioning, experimentation, and then process of the data or information, present of the data or information, and then by analyzing, reasoning, then make of conclusions and creates. The process of learning the scientific approach should be apply values or scientific nature and avoid the values or attributes nonscientific. To get the most the teachers do not just apply a scientific approach but also uses discovery learning models. Discovery learning is a learning theory which is defined as the process of learning that occurs when the students are not presented in its final form, but it is expected that students are expected to organize themselves and to improve student in the learning of mathematical reasoning.
Based on the introduction above are encouraged researchers to conduct research on the improvement of mathematical reasoning through scientific approach with a model of discovery learning in class VIII E MTs Muhammadiyah of Blimbing.
The purpose of this research is to improve students' of mathematical reasoning through scientific approach with the discovery learning models on the students of grade VIII E MTs Muhammadiyah of Blimbing.
RESEARCH METHODS
from March 2014. Researches preparation, execution and analysis of data with
math’s teacher. The subjects are students as the subject of a class action and the receive of math’s teacher of MTs Muhammadiyah Blimbing as giver of.
This research included classroom action research (CAR) is a collaborative between teacher mathematics and researchers. The teacher's role here is as a learning practitioner, while the designers and researchers as observers. Teacher involved from the planning, implementation, observation until reflection.
According Aqib (2009: 19) action research is research conducted by the teacher in the classroom or in the school where he taught with emphasis on improvement or improve learning processes and practices. Action research is characterized by the presence of continuous improvement so as to achieve the objectives of the study. Improvements were made in each cycle designed by the researchers. CAR is characterized by continuous improvements to the satisfaction of researchers as a benchmark of the success cycle.
This study is an action research (CAR) based collaborative. A practical study, based on conditional and contextual issues that arise in day-to-day activities at the school. Teachers and researchers constantly strive to obtain optimal results through methods and procedures so as to permit effective action with repeated revisions to improve students' mathematical reasoning ability in learning mathematics through a scientific approach to discovery learning models.
Action research will go through several stages, namely: 1) the initial dialogue, 2) action planning, 3) implementation of the action, 4) observation, 5) reflection, 6) evaluation and 7) inference.
Data collection techniques used in this research included : 1) observation and interviews, 2) tests, 3) field notes, , and 4) documentations to get optimal results.
RESULTS AND DISCUSSION
researchers and teachers of mathematics teachers which done in the office MTs. Muhammadiyah of Blimbing. Based on the results of observations about, there are a problem in mathematical problem-solving the research done with students and teachers determine of indicators in mathematical reasoning. And then the results of first in observations and dialogue is concluded that it’s not fully work on the problems in the allegations filed. Most of the students are still confused about the teacher, the students cannot fully speculate for the work on the problems. In addition, the ability of students to give reasons / evidence is still lacking truth. Many students are still confused and ask the teacher about the purpose of the. As a result, many students who do not understand to give reasons / evidence of the truth of the matter. So is the ability of students to find patterns in a mathematical phenomenon is also less. Students need teachers to help determine how the pattern on the matter, especially in the wake flat pattern drawing many students are still confused how to draw the pattern.
Preliminary observations have been made in grade VIII E MTs. Muhammadiyah of Blimbing obtain data about students' lack of mathematical reasoning. The data includes the ability of students asking the alleged there were 9 students (30%), the ability of students to give reasons / evidence of the truth there are 5 students (16.6%) and the ability of students to find the pattern there is a mathematical phenomenon 7 students (23.3%).
From this observation and dialogue resulted in an agreement that: 1) efforts to improve students' mathematical reasoning needs to be done, 2) identify the problems that allegedly is the less in developing students' mathematical reasoning, and 3) alternative learning practiced in efforts to improve students' mathematical reasoning in grade VIII E MTs Muhammadiyah of Blimbing in mathematics learning is through a model of scientific discovery learning approach.
First Cycle
together to discuss math teacher about things that will be implemented during the study. The results of this activity generates discussion: (1) grade math teacher VIII E MTs Muhammadiyah of Blimbing as executor, while the researchers only aid teaching and learning takes place when the observation, (2) class action activity cycle 1 will be carried out in accordance with the lesson plan (RPP) which has been made by researchers with the allocation of lesson time of 4 hours (160 minutes) with each meeting there is a 2 hour lesson. Planning a class action of this first cycle will use a scientific approach to discovery learning models. The material will be taught about the surface area of the prism and pyramid surface area and (3) copies of field notes to record and describe the things that are not in the observation sheet.
Implementation of cycle I was done at 2 meetings are on Monday, April 28, 2014 to 4-5 hours (9:35 to 10:45) and Tuesday, April 29, 2014 to 7-8 hours (12:20 to 13:40). The numbers of students who attended the first meeting of the 29 students and 30 students in the second meeting of the 30 students. The results of observations implementation cycle I use the scientific approach with a model of discovery learning.
From the results of observations conducted by researchers at the first cycle in grade VIII E MTs. Muhammadiyah of Blimbing with the totaling 30 students, the data obtained the following: (1) students were able to question the alleged there were 15 students (50%), (2) the student is able to give a reason / evidence for the existing 8 (26.6), (3) students able to find a pattern of symptoms mathematically there are 12 people (40%).
Second Cycle
class action of this first cycle will use a scientific approach to discovery learning models. The material will be taught about the volume of the prism and pyramid volume.
Based on the second cycle of reflection, mathematical reasoning of students has increased. This is evident by an increase in indicators of students' mathematical reasoning used by researchers, including (1) the students were able to ask the alleged there were 24 students (80%), (2) the student is able to give a reason / proof of the truth that there are 20 students (66.6 %) and (3) the student is able to find patterns in a mathematical phenomenon there were 22 students (73%). The learning process in the second cycle, students are used to using a scientific approach to discovery learning models. It can be seen from the students who are able to work on the problems given by the teacher. Students are also able to propose doing about the allegations at the time, giving reasons / evidence to find the truth and also a symptom of mathematical patterns. Because indicators of mathematical reasoning has been reached and the application of learning to use a model of scientific discovery learning approach has been running well, then the researcher with the teachers took the decision that the application of the model of scientific discovery learning approach ended in the second cycle.
Table 4.1
Improvement of Mathematical Reasoning of the Students
Figure 4.1
Improved Mathematical Reasoning Students
Based on table 4.1 and figure 4.1 it can be concluded that the application of the scientific approach to discovery learning models can improve students' mathematical reasoning MTs. Muhammadiyah of Blimbing. It can be seen from the increase in indicators of mathematical reasoning.
Discovery scientific approach to learning models that have been applied more to improve students' mathematical reasoning. Mathematical reasoning skills students have increased step by step, it can be seen from the prior action until the second cycle. This can be shown by an increase in the indicators as follows: 1. The Students’ Ability to Asking of Presumption
about when working, this way students are more easily imagine what way do the problems. In the first cycle, an indicator of the ability of students does not meet expectations because the students are not familiar. But after teachers use scientific approach with a model of discovery learning students filed indicators gradually increasing suspicion. It is seen from the students who are able to work on the problems of teacher correctly. This is supported by the results of the study Sari (2014) which states that the ability of students in filing prior to the alleged act of 31.25% and 71.88% after the action becomes. 2. The Students’ Ability to gives of reason / evidence of truth
The ability of students to give reasons / evidence of the truth of the scientific approach to learning through discovery learning model was seen at the time of the student conduct group discussions and work on the problems of individuals. At the time of the discussion group students were able to try to give reasons / evidence of the truth of the matter or issue that is given by the teacher. In the first cycle, many students are wondering how to give a reason / proof of truth, but after getting direction from the teacher using a scientific approach to discovery learning model of the students have been able to give a reason / evidence for the increase. It is seen from some of the students who are able to give a reason / proof of the truth of the matter correctly. This is supported by the results of the study Sari (2014) which states that the ability of students to give reasons / evidence for the action prior to 21.80% and 78.13% after the action becomes.
3. The students’ Ability to give of presumptive mathematic of patterns
In the second cycle of class actions, indicators mathematical reasoning of students has been reached, of 24 students (80%) were able to submit allegations, 20 students (66.6%) were able to give a reason / evidence of the truth, and 22 students (73%) were able to give a presumptive mathematical of patterns. This shows the scientific approach to give learning models can improve students' mathematical reasoning.
The conclusion is supported by previous studies, Sari (2014) concluded that the application of problem based learning strategies can improve the ability of reasoning and student learning outcomes. The results of the study by Beny Yosefa, Elis Nurjanah (2013) concluded that mathematical reasoning ability junior high school students are getting the learning method Quantum Teaching using Mind Mapping is better than reasoning ability junior high school students who get expository mathematics learning.
Based on the above explanations that support the research and the researchers conducted based formulation of the problem that has been formulated by the investigators concluded that the use of the scientific approach to discovery learning models can improve students' mathematical reasoning in grade VIII E MTs Muhammadiyah of Blimbing Year 2013/2014.
CONCLUSIONS
This study is an action reasearch on the aplication of the scientific approach with the discovery learning model to improvement of mathematical reasoning the students on grade VIII E of MTs Muhammadiyah of Blimbing year 2013/2014.
BIBLIOGRAPHY
Aqib, Zaenal. 2009. Penelitian Tindakan Kelas: Krarna Widya.
Cholil, Hasan Wahyu. 2013. Peningkatan Kemampuan Penalaran dan Hasil Belajar Matematika Melalui Strategi Problrm Solving. Surakarta: Skripsi UMS.
Kemendikbud. 2013. Menteri Pelatihan Kurukulum 2013. Bandung: PT. Remaja Rosdakarya Offset.
Sari, Gresi Putri Mayang. 2014. Peningkatan Penalaran dan Hasil Belajar Matematika Melalui Strategi Problem Based Learning. Surakarta: Skripsi UMS.
Yosefa, Beny., Elis Nurjanah. 2013. “Pengaruh Metode Pembelajaran Quantum Teaching Dengan Menggunakan Mind Mapping Terhadap Kemampuan
