The aim of this study is to obtain information about the mathematics competency of Indonesian students based on international benchmark in TIMSS 2011. This study is a quantitative descriptive study based on TIMSS 2011 data. The population of this study is all students in the junior high schools (SMP) in Indonesia. The subjects of the research are 5.795 Indonesian students from 154 schools.  The methods of multistage stratified and random sampling are conducted as sample-determining technic. Data analysis was administered by International Association for the Evaluation of Educational Achievement (IEA) using IDB analyzer program.The average mathematics score acquired by Indonesian students is 386, below the international average score (500). Indonesian students is at rank 40 of 45. Based on international benchmark, there are 0% Indonesian students who can achieve advanced level, 2% reaching the high level, 15% achieving intermediate level, and 43% in the low level. For most of Indonesian students the  mastery of Mathematics material is very low, especially in solving the problem at proficient level and high level. The research concludes that: (1) Indonesian students are less accustomed to work on items in applying and reasoning cognitive domain, especially in constructed-response items; (2) Indonesian students are less accustomed to work on items that need more than one process of solving the questions; (3) Misconception among Indonesian students about arithmetic operations (+, -, x, :), which one should be done first; and (4) Indonesians students have more difficulties in working on algebraic operations than number operations.Abstract. The aim of this study is to obtain information about the mathematics competency of Indonesian students based on international benchmark in TIMSS 2011. This study is a quantitative descriptive study based on TIMSS 2011 data. The population of this study is all students in the junior high schools (SMP) in Indonesia. The subjects of the research are 5.795 Indonesian students from 154 schools.  The methods of multistage stratified and random sampling are conducted as sample-determining technic. Data analysis was administered by International Association for the Evaluation of Educational Achievement (IEA) using IDB analyzer program.The average mathematics score acquired by Indonesian students is 386, below the international average score (500). Indonesian students is at rank 40 of 45. Based on international benchmark, there are 0% Indonesian students who can achieve advanced level, 2% reaching the high level, 15% achieving intermediate level, and 43% in the low level. For most of Indonesian students the  mastery of Mathematics material is very low, especially in solving the problem at proficient level and high level. The research concludes that: (1) Indonesian students are less accustomed to work on items in applying and reasoning cognitive domain, especially in constructed-response items; (2) Indonesian students are less accustomed to work on items that need more than one process of solving the questions; (3) Misconception among Indonesian students about arithmetic operations (+, -, x, :), which one should be done first; and (4) Indonesians students have more difficulties in working on algebraic operations than number operations.AbstrakTujuan penelitian ini adalah memperoleh informasi tentang kemampuan matematika siswa Indonesia berdasarkan benchmark Internasional dalam TIMSS 2011. Penelitian ini merupakan penelitian deskriptif kuantitatif berdasarkan data TIMSS tahun 2011. Populasi dari penelitian ini adalah seluruh siswa SMP/MTs dan sampel penelitian adalah siswa kelas VIII SMP/MTs. Jumlah siswa yang menjadi sampel sebanyak 5.795 siswa dari 154 sekolah. Penentuan sampel dilakukan dengan metode multistage stratified dan acak. Analisis data dilakukan oleh International Association for the Evaluation of Educational Achievement (IEA) menggunakan program IDB analyzer. Rerata skor matematika siswa Indonesia adalah 386, di bawah rerata skor Internasional (500). Indonesia berada pada peringkat 40 dari 45 negara peserta. Capaian siswa Indonesia untuk level mahir 0%, level tinggi 2%, level menengah 15%, dan level rendah 43%. Penguasaan materi matematika bagi sebagian besar siswa Indonesia masih sangat rendah terutama untuk menyelesaikan soal-soal pada level mahir dan level tinggi. Simpulan dari penelitian ini adalah: (1) siswa Indonesia masih menemui kesulitan untuk menyelesaikan soal aplikasi dan penalaran, terutama untuk soal uraian, (2) dalam konsep operasi hitung (+, - , x, : ) masih ditemukan siswa yang belum memahami urutan oprerasi hitung yang dikerjakan terlebih dahulu, dan (3) siswa Indonesia masih kesulitan menyelesaikan soal dalam bentuk variabel atau operasi aljabar.

This study aims to obtain information about elementary teacher competencies in solving math problems. This research uses quantitative and descriptive methods. Quantitative methods are used to determine elementary school teacher competency, proportion correct, and item difficulty, while descriptive methods are used to inform test scores, proportion correct, and item difficulty in tabular and graphic form so that they are easy to read and understand. The population of this study is all the reference elementary schools in Indonesia, while the sample is determined by simple random sampling. The number of sample schools was 101 schools, while the objects of this study were 101 elementary school teachers. Analyzes were performed using Excel to determine test scores, item difficulty, and proportion correct. From the results of the analysis, it can be concluded that as many as 44% of teachers scored above 80, but as many as 11% of teachers scored less than 50. The proportion is correct of probability above 80% higher than the proportion correct of geometry and measurements and numbers. The highest proportion correct of cognitive domain knowing is 83.89% and the lowest proportion correct of cognitive domain reasoning is 41.73%. The proportion correct of the material tested for fractions and decimals, geometric shapes, and organization and presentation of data is above 80%, while the proportion correct of other materials is below 80%. The proportion correct of elementary school mathematics material is quite good in the category of 75.88%, but the number or measure of diversity is quite high with a standard deviation of 167%. This is also seen from the lowest proportion correct of 23.22% and the highest 96.83%. That is, there is a fairly high variation or gap between teachers with the lowest and highest mastery of the material, even though the tendency for achieving teacher scores is quite good. The level of mastery of teachers answered correctly the multiple-choice items 76.77% and the essay items 75.27%.

Abstract. This study was to determine the relationship between translation, interpretation, and extrapolation abilities on the level of learning achievement of elementary school students on Science subject matter. Meanwhile, the research method is descriptive quantitative. Data collection techniques used tests of understanding the concepts of translation, interpretation, and extrapolation with test techniques, and student learning achievement with secondary data in the form of documents owned by the classroom teacher. The data analysis technique uses the product-moment and regression test. Based on the research results it can be seen that; (1) Correlation between translation skills and the level of achievement in science learning of grade 5 students with rxy1 = 0.231 at a significance level of 0.057. The level of significance is satisfactory. (2) Correlation between the interpretation ability and the level of science learning achievement of grade 5 students with rxy1 = 0.401 at a significance level of 0.002. The level of significance is satisfactory. (3) Correlation between extrapolation ability and science learning achievement level of 5th-grade students with rxy1 = 420 at a significance level of 0.001. its level of significance is very satisfying. (4) Correlation between the ability of translation, interpretation, and extrapolation and the level of science learning achievement of grade 5 students with rxy123 = 0.470, F = 4.154 with df = 3: 44 at a significance level of 0.001. its level of significance is very satisfying.

Indonesia's PISA results are relatively low when compared to other countries. Student learning experience is thought to be an important factor that influences students' lack of scientific inquiry skills. This study aims to describe the profile of students' learning experiences and scientific inquiry skills in science subjects. This descriptive study involved 1305 respondents from public and private high schools in West Java. The instrument used was a questionnaire consisting of 40 items to reveal student learning experiences in learning science and scientific inquiry skills tests in the form of 55 multiple choice and essay items developed based on the PISA framework with the adjustment of the junior high school science curriculum. Research data were analyzed descriptively using graphs. The results showed that some students (51.0%) stated that learning science in elementary and junior high schools was not fun, more than half (56.6%) rarely did practicum at school, and some to most students (42-75%) rarely plan and carry out experiments or scientific inquiry independently. The results of the research that have been presented indicate that the learning experience of students in learning science has not been maximal and students' scientific inquiry skills need to be improved. The implications and recommendations of the research findings are presented at the end of this article.