scholarly journals Eksplorasi kemampuan penalaran dan representasi matematis siswa sekolah menengah pertama

2018 ◽  
Vol 13 (2) ◽  
pp. 189-202
Author(s):  
Absorin Absorin ◽  
Sugiman Sugiman

Penelitian ini bertujuan untuk mendeskripsikan kemampuan matematis, yang terdiri atas kemampuan penalaran dan representasi matematis siswa SMP di Kabupaten Indramayu, Jawa Barat. Penelitian ini merupakan penelitian survei dengan pendekatan kuantitatif. Populasi dalam penelitian ini adalah seluruh siswa SMP kelas VIII di Kabupaten Indramayu tahun pelajaran 2016/2017. Sampel penelitian sebanyak 390 siswa. Teknik pengambilan sampel yang digunakan adalah stratified random sampling.Pengumpulan data dilakukan melalui teknik Tes. Teknik analisis data menggunakan statistika deskriptif melalui dua cara, yaitu estimasi titik dan estimasi interval rata-rata untuk menentukan kategori ketercapaian pada masing-masing kemampuan matematis siswa. Hasil penelitian menunjukkan bahwa kemampuan matematis siswa SMP di Kabupaten Indramayu berada pada kategori sedang. Secara lebih spesifik rata-rata skor pada kemampuan penalaran matematis siswa termasuk dalam kategori sedang. Begitu juga pada rata-rata skor kemampuan representasi matematis siswa berada pada kategori sedang. Exploration ability of mathematical reasoning and representation of junior high school students AbstractThis study aimed to describe the mathematical ability, which consists of the ability of mathematical reasoning and representation in junior high school students in Indramayu, West Java Province, Indonesia. This research was using survey method with quantitative approach. The population in this study were all grade VIII students in both state and private junior high schools in Indramayu district in academic year of 2016/2017 and 390 students selected as sample research. The sampling technique was stratified random sampling. Data collected using test technique. Technique data analysis used descriptive statistics through two ways, namely estimation point and the average of interval estimation to determine the category of achievement in each of the students' mathematical abilities.  The result showed that the mathematical ability of junior high school students in Indramayu district was in the medium category. More specifically the average score on students' mathematical reasoning abilities was included in the moderate category. Similarly, the average score of students' mathematical representation ability was in the medium category.

2018 ◽  
Vol 1 (2) ◽  
pp. 93
Author(s):  
Winda Awaliyah ◽  
Aflich Yusnita Fitrianna

This research aims to determine the relationship of student learning interest to the mathematical reasoning ability of junior high school students in chapter circle. Method used is quantitative with correlation method. this research was conducted in one of  junior high school in Cimahi with population of all students of  class IX and sample IX-M as many as 30 people. Instrumen used in this research is a questionnaire instrument to measure the level of student learning interest and test instrument to measure the ability mathematical reasoning of students. Analysis results visible there is a significant relationship between student learning interests with the ability of mathematical reasoning and contribution/ influence interest in learning on the ability of mathematical reasoning of junior high school students of class IX is positive is equal to 74,64% while the remaining 25,36% influenced by other factors.


2018 ◽  
Vol 1 (2) ◽  
pp. 194
Author(s):  
Diky Irawan ◽  
Euis Eti Rohaeti ◽  
Asep Ikin Sugandi

This study aims to examine the achievement and improvement of the ability of understanding and mathematical reasoning and motivation through Think Talk Write (TTW) approach to junior high school students. The population in this study is all junior high school in West Bandung Regency and the sample is class VIII of SMPS Darun Nasya, The instrument used in the research is a question of understanding and mathematical reasoning and questionnaire of learning motivation attitude, then the data obtained is processed through a two-way ANOVA test and correlation and regression test, data processing using IBM Statistics SPSS 21. Results of research involving TTW as independent variables in the experimental class and direct learning in the control class showed: There was a difference in achievement and improvement of mathematical understanding between control and experiment class, There are differences in achievement and improvement of mathematical reasoning between control and experiment class, There is difference of student's learning motivation between control and experiment class.


2018 ◽  
Vol 1 (2) ◽  
pp. 143
Author(s):  
Ida Juhanah ◽  
Jozua Sabandar

This research aims to examine the improvement of understanding ability and mathematical reasoning as well as the motivation of learning of junior high school students by discovery learning method conventional method. In addition, it aims to check the improvement of understanding ability and mathematical reasoning as well as the motivation of learning though junior high school students. This research was quasi experiment which was designed to nonequivalent control group. The study The population on this research was all the junior high school students of Cipeundeuy 2 Junior High School West Bandung Regency. The Sample was two classes of 7th grade students. The data was attained by understanding thinking and mathematical test which using material of algebraic form and questionnaire motivation to learn


Author(s):  
Lalu Muhammad Imam Husaini M. Nasir ◽  
Agil Al Idrus ◽  
Agus Ramdani

The development of the science student worksheet based on the bioecology of cuttlefish (Sepia sp.) cultivation is an effort to improve the scientific literacy skills of students at the coastal village school of East Lombok. The purpose of this research is to produce student worksheet that is feasible, practical, and effective in improving students' literacy skills. This research is research and development using Thiagarajan 4D development model which includes design, define, develop, and disseminate stages. The research subjects consisted of 1 SMP/MTs equivalent in East Lombok which were determined using purposive sampling technique. The instruments used include validation sheets, student and teacher response questionnaires, and scientific literacy assessment instruments. The feasibility and practicality data were analyzed using the percentage formula, and the effectiveness data were analyzed using the N-gain analysis. The results showed that 1) student worksheet science based on the bioecology of cuttlefish cultivation (Sepia.sp) was feasible to use with an average score of 73 for the content/material aspect, 73 for the language aspect, and 85 for the appearance aspect, 2) science student worksheet based on the bioecology of cuttlefish cultivation. (Sepia sp.) is practically used with an average percentage of student responses of 81% and teacher responses of 88%, 3) student worksheet science based on the bioecology of cuttlefish cultivation (Sepia.sp) is effective in improving students' scientific literacy skills with an average N value -gain of 0.5 in the medium category. Thus, it can be concluded that the science student worksheet based on the bioecology of cuttlefish (Sepia sp.) cultivation is feasible, practical, and effective to use in science learning as an effort to improve the scientific literacy of junior high school students in coastal village schools in East Lombok.


2020 ◽  
Vol 4 (2) ◽  
pp. 295-307
Author(s):  
Wahyu Budiyani ◽  
Sujarwo Sujarwo

This study was aimed at improving junior high school students’ vocabulary mastery. The subjects of this study were the students grade 7 of junior high school with a total number of 60 students. The method employed in this study was the Research and Development design. The development model used is the ADDIE modification development model. The steps in the ADDIE development consist of five stages; namely analyzing, design, development, implementation, and evaluation. Product trials are carried out in three stages, namely small group trials, operational trials, and large group trials.. The instruments used in development research were observation sheets, interviews, and assessment questionnaires. A t-test was used to analyze the effectiveness of media development. The media then were validated by the media experts, material experts, and teachers. The results shows that the media is feasible with an average score of 4.55. The findings also show that the Interactive Learning Multimedia effectively enhance students’ vocabulary mastery for junior high school students and able to be used as a catalyst or alternative media teaching vocabulary. 


2020 ◽  
Vol 10 (4) ◽  
pp. 323-332
Author(s):  
Bronika Septiani Sianturi ◽  
◽  
Jhonas Dongoran ◽  

This research was conducted to develop an integrated science practicum guide with the theme of inquiry-based photosynthesis for junior high school students with student learning outcomes and activities. This research is a Research and Development research with small-scale trials in class VIII A and large scale at VIIIB. The results showed that the practical guide was valid and feasible to use by obtaining an average score of> 3.2 from each expert. After calculating the n gain formula, the classical gain n value is 0.56 (moderate), with the classical completeness percentage is 100%. The results of the analysis of students' understanding using practicum guides have been developed with an average of 83.84. Meanwhile, the understanding of students who did not use the practicum guide that had been developed obtained an average of 62.20. This shows that the understanding of students using the practicum guide that was developed is higher than without using the practicum guide that has been developed. The results of student activity increased after the second meeting with an average of 85.47% of students belonging to the "active" and "very active" categories. So it can be concluded that the integrated science practicum guide for inquiry-based photosynthesis for junior high school students has proven valid and suitable for use in learning. Keywords: Research and Development (R & D), Inquiry, Practicum Guide


MATHEdunesa ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 402-411
Author(s):  
Safirah Viki Amalina ◽  
Rooselyna Ekawati

Problem solving is one of several important abilities a student must have. Problem solving is a planned process that mustbe done in order to get a certain solution of a problem that is not obtained immediately. One type of problem studentsmust solve is an open-ended problem. Open-ended problem solving for every student is certainly different from oneanother. The level of mathematical ability of students is one of the factors that influence these differences. This type ofresearch is a qualitative descriptive with the purpose to describe the profile of open-ended problem solving based onPolya’s steps viewed from mathematical ability level of junior high school students. Three students from grade VII arethe subjects in this research (one student having high mathematical ability, one student having moderate mathematicalability, and one student having low mathematical ability). This research uses instruments mathematical ability test, openended problem solving test, and interview guidelines. The results showed there were differences in the open-endedproblem solving profile on students with high, moderate, and low mathematical ability. Student with high mathematicalability can carry out all the steps of Polya’s problem solving. Student with moderate mathematical ability are able to carryout the step of understanding the problem, devising a plan, carrying out the plan, however there are indicators that are notfulfilled at looking back’s step they are using the other way to solve the problem and make conclusion. Student with lowmathematical ability can not show the adequacy of the data at understanding the problem’s step and can not carry out thesteps of devising a plan, carrying out the plan and looking back.


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