MENINGKATKAN PRESTASI BELAJAR MATEMATIKA DENGAN MODEL PEMBELAJARAN KOOPERATIF TIPE CORE PADA SISWA KELAS XI MIPA 2 SMA NEGERI 1 BAURENO BOJONEGORO

This study aims to determine the mathematics learning achievement of class XI MIPA 2 students of SMA Negeri 1 Baureno Bojonegoro according to predetermined targets. The target of this study was ≥75% of the students of class XI MIPA 2 who met the KKM mathematics score of ≥75. This type of research is Classroom Action Research (CAR) using models from Kemmis and Mc. Taggart and executed in two cycles. This study applies the CORE type of cooperative learning model which has 4 components, namely (1) connecting (connecting) (2) organizing (organizing); (3) reflecting (reflecting); and (4) extending. The subjects of this study were 35 students of class XI MIPA 2 SMA Negeri 1 Baureno. Before the action was taken, 24 students of class XI MIPA 2 scored above the KKM based on the UAS scores. The data used in this research is learning achievement obtained from the test results of each cycle supported by observation data and questionnaires. The results showed that there was an increase in student achievement in class XI MIPA 2 where as many as 30 students (83.33%) scored above the KKM. Penelitian ini bertujuan untuk mengetahui prestasi belajar matematika siswa kelas XI MIPA 2 SMA Negeri 1 Baureno Bojonegoro sesuai dengan target yang telah ditentukan. Target penelitian ini sebanyak ≥75% siswa kelas XI MIPA 2 memenuhi nilai KKM matematika sebesar ≥75. Jenis penelitian ini adalah Penelitian Tindakan Kelas (PTK) menggunakan model dari Kemmis dan Mc. Taggart dan dilaksanakan dalam dua siklus. Penelitian ini menerapkan model pembelajaran kooperatif tipe CORE yang memiliki 4 komponen yaitu (1) connecting (menghubungkan) (2) organizing (mengorganisasi); (3) reflecting (merefleksi); dan (4) extending (memperluas). Subjek penelitian ini adalah peserta didik kelas XI MIPA 2 SMA Negeri 1 Baureno sebanyak 35 siswa. Sebelum dilakukan tindakan, sebanyak 24 siswa kelas XI MIPA 2 mendapat nilai matematika di atas KKM berdasarkan hasil nilai UAS. Data yang digunakan pada penelitian ini adalah prestasi belajar yang diperoleh dari hasil tes setiap siklus didukung oleh data observasi dan angket. Hasil penelitian menunjukkan bahwa terdapat peningkatan prestasi belajar siswa kelas XI MIPA 2 dimana sebanyak 30 siswa (83,33%) mendapat nilai di atas KKM.

Breakfast and Exercise Improve Academic and Cognitive Performance in Adolescents

This study examined the combined effects of breakfast and exercise on short-term academic and cognitive performance in adolescents. Eighty-two adolescents (64 female), aged 14–19 years, were randomized to four groups over a 4-hour morning: (i) a group who fasted and were sedentary (F-S); (ii) a group who ate breakfast but were sedentary (B-S); (iii) a group who fasted but completed a 30-min exercise bout (F-E); and (iv) a group who ate breakfast and completed a 30-min exercise bout (B-E). Individuals completed academic and cognitive tests over the morning. Adolescents in B-E significantly improved their mathematics score (B-E: 15.2% improvement on correct answers, vs. F-S: 6.7% improvement on correct answers; p = 0.014) and computation time for correct answers (B-E: 16.7% improvement, vs. F-S: 7.4% improvement; p = 0.004) over the morning compared with the F-S group. The B-E group had faster reaction times for congruent, incongruent and control trials of the Stroop Color-Word Task compared with F-S mid-morning (all p < 0.05). Morning breakfast and exercise combine to improve short-term mathematical task performance and speed in adolescents.

Refleksi Diri untuk Memperbaiki Hasil Belajar berdasarkan Hasil TIMSS

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.

KOMPARASI HASIL PRESTASI BELAJAR SISWA SEKOLAH DASAR INKLUSI DAN HOMESCHOOLING

This study aims to describe the comparation of student achievement results of Primary School Semai Jepara with Homeschooling Primagama Semarang. Because both institutions have similarities in the category of inclusive schools, which accept all children as students based on quotas. In this study, the learning achievement studied is only the value of the main subjects namely Indonesian, Mathematics, and Natural Sciences. The result of research shows that Indonesian and Mathematics score from Semai Primary School students is superior to Homeschooling Primagama Semarang. However, in the subjects of Natural Sciences, students of Homeschooling Primagama Semarang are superior. In general, the average value of learning achievement of the main subjects obtained the conclusion of SD Semai Jepara is superior to Homeschooling Primagama Semarang. Keywords: achievement, primary school, Homeschooling. Penelitian ini bertujuan untuk mendeskripsikan komparasi hasil prestasi siswa Sekolah Dasar Semai Jepara dengan Homeschooling Primagama Semarang. Karena kedua lembaga tersebut memiliki kesamaan dalam hal kategori sekolah inklusi, yang menerima semua anak sebagai siswa berdasarkan kuota. Dalam penelitian ini, prestasi belajar yang diteliti hanya nilai dari mata pelajaran utama yaitu Bahasa Indonesia, Matematika, dan Ilmu Pengetahuan Alam. Hasil penelitian menunjukkan nilai Bahasa Indonesia rata-rata 91,3 dan Matematika 82 dari siswa Sekolah Dasar Semai lebih unggul dibandingkan Homeschooling Primagama Semarang. Namun pada mata pelajaran Ilmu Pengetahuan Alam, nilai siswa Homeschooling Primagama Semarang lebih unggul dengan rata-rata 83,31. Secara umum nilai rata-rata prestasi belajar mata pelajaran utama diperoleh kesimpulan SD Semai Jepara lebih unggul dibandingkan Homeschooling Primagama Semarang. Kata-kata kunci: prestasi, Sekolah Dasar, Homeschooling.