The aim of this research is to know the effect of application of E-Learning model based on Web-Centric Course with Edmodo application media to increase: (1) the interesting of learning mathematics, (2) The mathematics student learning outcomes. The research method is used in quantitative research with the quasi-type experimental design, as well as research design using the pre-test and post-test control group. The Instrument has used the test of mathematics learning outcomes and questionnaire interest in learning mathematics students. The data hypothesis test uses the t-test involving pre-requisite tests (normality and homogeneity) beforehand. The result of this research is the application of E-Learning model based on Web-Centric Course with Edmodo application media has an effect on: (1) the student learning outcomes of mathematics; (2) the interesting of learning mathematics students.
AbstrakSiswa mengalami kesulitan dalam memecahkan masalah Trigonometri yang berdampak pada rendahnya hasil belajar. Artikel ini bertujuan untuk menganalisis kesalahan siswa memecahkan masalah trigonometri ditinjau dari strategi pemecahan masalah Polya. Penelitian ini merupakan penelitian eksploratif menggunakan pendekatan kualitatif deskriptif. Penelitian dilaksanakan dengan melibatkan 1 guru dan 20 siswa SMA. Data penelitian ini dikumpulkan melalui tes dan wawancara. Tes terdiri atas 5 masalah Trigonometri. Wawancara semi terstruktur diberikan pada; (1) guru untuk mengetahui kesulitan yang dialami siswa selama proses pembelajaran Trigonometri, dan (2) siswa untuk mengidentifikasi kesalahan dalam memecahkan masalah. Data dianalisis dengan tahapan berikut; (1) jawaban siswa diperiksa lalu di hitung skor untuk setiap masalah, (2) di identifikasi jenis kesalahan siswa pada setiap masalah, (3) persentase banyaknya siswa dihitung pada tiap jenis kesalahan, dan (4) siswa yang melakukan kesalahan diwawancara untuk mengetahui penyebab dan jenis kesalahan. Penelitian ini menemukan bahwa kesalahan siswa dalam memecahkan masalah Trigonometri adalah: (i) Kesalahan memahami masalah Trigonometri (57,73%); (ii) Kesalahan dalam merencanakan strategi (9,27%); (iii) Kesalahan menerapkan solusi (15,83%); dan (iv) kesalahan dalam memeriksa kembali (17,16%). Student Errors in Solving Trigonometry Problems in View from Polya’ Problem Solving IndicatorsAbstractStudents have difficulty in solving trigonometric problems which have an impact on low learning outcomes. This article aims to analyze students' errors in solving trigonometric problems in terms of Polya's problem-solving strategy. This research is exploratory research using a descriptive qualitative approach. The research was conducted by involving 1 teacher and 20 high school students. The data of this study were collected through tests and interviews. The test consists of 5 Trigonometry problems. Semi-structured interviews were given on; (1) teachers to find out the difficulties experienced by students during the Trigonometry learning process, and (2) students to identify errors in solving problems. The data were analyzed in the following steps; (1) student answers are checked and then the score is calculated for each problem, (2) the types of student errors are identified in each problem, (3) the percentage of the number of students is calculated for each type of error, and (4) students who make mistakes are interviewed to find out the cause and the type of error. This study found that students' errors in solving Trigonometric problems were: (i) Misunderstanding of Trigonometric problems (57.73%); (ii) Errors in devising a plan (9.27%); (iii) Error in performing the plan (15.83%); and (iv) errors in looking back/ confirmation of the answer (17.16%).
Untuk dapat meningkatkan kemampuan pemecahan masalah siswa salah satu caranya adalah dengan pemilihan model pembelajaran matematika yang tepat. Salah satu model pembelajaran yang dapat dipakai adalah model problem based learning. Tujuan penelitian ini adalah untuk menganalisis kembali pengaruh model problem based learning terhadap kemampuan pemecahan masalah matematis siswa dengan cara mereview, merangkum data dan menganalisis beberapa hasil penelitian yang sudah publish di google scholar sebanyak 14 artikel dengan cara statistika. Jenis penelitian pada artikel ini adalah jenis penelitian meta analisis. Langkah-langkah penelitian antara lain pengumpulan data, pengkodean, perhitungan peningkatan kemampuan pemecahan masalah dan effect size, mengidentifikasi ada tidaknya perbedaan rata-rata, dan penarikan kesimpulan. Berdasarkan hasil penelitian rata-rata effect size sebesar 2,02 dengan kategori sangat besar. Sedangkan berdasarkan uji paired sample t-test nilai sig (2 tailed) = 0,000 < α = 0,05 yang artinya terdapat perbedaan rata-rata kemampuan pemecahan masalah sebelum dan sesudah diberi perlakuan model problem based learning. Berdasarkan rata-rata effect size dan hasil uji paired sample t-test dapat disimpulkan bahwa model problem based learning berpengaruh terhadap kemampuan pemecahan masalah matematis siswa.
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