Analisis Kemampuan Siswa dalam Menyelesaikan Persamaan Linear Satu Variabel Pada Siswa Kelas VIIIA SMPK St. Paulus Karuni

Based on the test results on the material about linear equations of one variable, students of class VIIIA SMPK St. Paulus Karuni show that students still have difficulty in solving linear equations of one variable. This is because the use of strategies in solving linear equations of one variable is still minimal and the teacher does not emphasize the most important part in solving the problem so that students still make mistakes. During the learning process, students have been taught using the Metacognitive-discursive approach. The Metacognitive approach emphasizes the learning process that requires students to give reasons for each answer, comment on wrong or erroneous answers using axioms and theorems that have been taught. Discursive means that teachers must adopt a teaching culture where before the students answer or comment on the wrong answer, the students first raise their hands and after being given the opportunity, the students can answer or comment. This study aims to determine the extent of students' ability to solve linear equations of one variable (PLSV) by using strategies that have been developed by teachers and researchers in solving PLSV problems. The subjects of this study amounted to 15 people. The results showed that of the 15 students who solved the problem, 13 of them solved correctly by giving reasons for their answers and the other 2 were wrong in calculating the final result. After the students were taught using the strategy developed by the teacher and researcher, there were 3 different variations of answers. Of these three answers, there were 2 types of answers that were solved correctly and one of the answers had a calculation error in the last part. In the first 2 types of answers, there is a difference where one type of answer students calculates to get the final result in the simplest form. This means that students still use additional rules to simplify the term

ANALISIS KEMAMPUAN PEMECAHAN MASALAH MATEMATIKA SISWA KELAS VIII-A SMPK ST. PAULUS KARUNI PADA MATERI PERSEGI DAN PERSEGI PANJANG

Penelitian ini bertujuan untuk menganalisis kemampuan pemecahan masalah siswa kelas VIII SMPK St. Paulus Karuni pada materi persegi dan persegi panjang dengan menggunakan model pembelajaran berbasis masalah (PBM). Penelitian ini merupakan penelitian deskriptif kualitatif dimana hasil penelitian digambarkan dengan menggunakan penjelasan-penjelasan yang ilmiah. Teknik pengumpulan data dalam penelitian ini berupa analisis hasil kerja siswa, tes, observasi kemampuan siswa dalam menyelesaikan latihan dan wawancara. Latihan yang diberikan kepada siswa sesuai dengan masalah yang sering dijumpai siswa dalam kehidupan sehari-hari. Analisis kemampuan pemecahan masalah siswa menggunakan indikator kemampuan pemecahan masalah dari Polya. Peneliti melakukan pembelajaran sesuai dengan langkah-langkah pembelajaran berbasis masalah. Berdasarkan hasil observasi pembelajaran dengan menggunakan langkah-langkah dari Polya disimpulkan bahwa penerapan model Pembelajaran Berbasis Masalah  (PBM) dapat meningkatkan kemampuan pemecahan masalah matematika siswa pada materi bangun datar di Kelas VIII SMPK St. Paulus Karuni. Hal ini terlihat ketika dalam menyelesaikan masalah yang diberikan oleh peneliti, siswa memahami masalah kemudian membuat rencana untuk menyelesaikan latihan serta melaksanakan rencana dan menuliskan jawabannya langkah demi langkah dengan menggunakan model matematika yang sesuai. Selain itu siswa dapat menjelaskan jawaban dengan alasan yang sesuai. Namun banyak juga siswa yang tidak memenuhi indikator keempat yakni melihat kembali jawabannya