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All Journal Primary: Jurnal Pendidikan Guru Sekolah Dasar Pedagogy : Jurnal Pendidikan Matematika Gammath : Jurnal Ilmiah Program Studi Pendidikan Matematika
Heni Pujiastuti
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Education Mathematics Other

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SLR: Kesalahan Siswa dalam Memecahkan Masalah Geometri Berdasarkan Teori Newman Tiolina Delarosa Aritonang; Heni Pujiastuti
Gammath : Jurnal Ilmiah Program Studi Pendidikan Matematika Vol. 8 No. 2 (2023): Gammath : Jurnal Ilmiah Program Studi Pendidikan Matematika
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/gammath.v8i2.544

Abstract

Geometri merupakan salah satu cabang penting dalam matematika yang perlu dipelajari oleh siswa, karena dapat membantu mengembangkan keterampilan dalam pemecahan masalah. Namun, masih terdapat kesalahan yang sering terjadi dalam menyelesaikan masalah terkait geometri, khususnya pada topik bangun ruang sisi datar. Penelitian ini bertujuan untuk melakukan kajian literatur terkait kesalahan siswa dalam menyelesaikan soal pada topik tersebut. Metode penelitian yang digunakan adalah Systematic Literature Review (SLR). Data dikumpulkan dengan mendokumentasikan dan mereview 43 artikel yang terindeks secara nasional, kemudian artikel-artikel tersebut dikelompokkan ke dalam beberapa kategori. Dari hasil penelitian, terdapat 13 artikel yang membahas mengenai kesalahan siswa dalam menyelesaikan masalah pada topik bangun ruang sisi datar. Berdasarkan hasil penelitian, ditemukan bahwa masih terdapat kesalahan yang sering dilakukan oleh siswa dalam menyelesaikan masalah terkait bangun ruang sisi datar. Jenis kesalahan yang paling umum adalah Comprehension Error, Transformation Error, dan Encoding Error. Kesalahan tersebut disebabkan oleh kurangnya pemahaman konsep, pemilihan rumus yang tidak tepat, dan kurangnya kebiasaan siswa dalam menyimpulkan hasil masalah geometri.  
PENGEMBANGAN INSTRUMEN KEMAMPUAN KOMUNIKASI MATEMATIS SISWA KELAS VIII SMP PADA MATERI BANGUN RUANG SISI DATAR Maya Sintya Sumarna; Novaliyosi; Hepsi Nindiasari; Heni Pujiastuti; Yuyu Yuhana
Pedagogy: Jurnal Pendidikan Matematika Vol. 10 No. 2 (2025): Pedagogy : Jurnal Pendidikan Matematika
Publisher : Universitas Cokroaminoto Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30605/pedagogy.v10i2.6197

Abstract

Penelitian ini bertujuan untuk mengembangkan instrumen tes yang layak digunakan untuk mengukur kemampuan komunikasi matematis siswa kelas VIII SMP pada materi bangun ruang sisi datar. Kemampuan komunikasi matematis mencakup keterampilan siswa dalam menyampaikan ide, menjelaskan proses pemecahan masalah, serta menggunakan bahasa dan simbol matematika secara tepat. Instrumen dikembangkan melalui tahapan analisis kebutuhan, penyusunan kisi-kisi dan soal, validasi oleh ahli, serta uji coba terhadap 30 siswa SMP. Hasil validasi menunjukkan bahwa instrumen yang dikembangkan sesuai dengan indikator kemampuan komunikasi matematis dan disusun secara sistematis. Uji coba empiris menunjukkan bahwa setiap butir soal memiliki korelasi yang tinggi dengan total skor, sementara nilai reliabilitas menunjukkan tingkat konsistensi internal yang kuat. Selain itu, soal memiliki tingkat kesukaran sedang hingga mudah dan daya pembeda yang baik. Berdasarkan hasil tersebut, instrumen dinyatakan layak digunakan sebagai alat evaluasi untuk mengukur kemampuan komunikasi matematis siswa SMP. Instrumen ini juga dapat menjadi referensi bagi guru dalam mendesain pembelajaran yang mendukung pengembangan keterampilan komunikasi matematis.
ANALISI PEMAHAMAN KONSEP OPERASI BILANGAN BULAT PADA SISWA KELAS IV MELALUI PEMBELAJARAN DARING Shafira Yaumil Alin; Heni Pujiastuti
Primary: Jurnal Pendidikan Guru Sekolah Dasar Vol. 11 No. 4 (2022): August
Publisher : Laboratorium Program Studi Pendidikan Guru Sekolah Dasar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33578/10.33578/jpfkip.v11i4.8583

Abstract

This article explains the ability of students to understand the concept of integer counting operations in online learning. The research was conducted in the even semester of 2020/2021. The location of the research was one of the elementary schools in Kragilan Serang Banten. The population of the research involved 15 fourth-grade students as the sample ofdata. Data collection techniques used observation techniques and tests of mathematical understanding concept abilities. The research method used was a qualitative research design. Data were analyzed by using data reduction and ata presentation. And the conclusions that referred to the indicators of understanding concept achievement were (1) 73% of students who were able to restate a concept, (2) 53% of students who could classify group objects based onthe concept, (3) 47% of students who were able to provide whether examples and not examples of concepts those were, (4) 87% of students who were able to present concepts in various forms of mathematical representation, (5) 40% of students who could develop the necessary and sufficient requirements of the concept, (6) 13% of students who could use, utilize and choose a particular procedure or operation, and (7) 20% of students who could apply the concepts oralgorithms into problem-solving. Contextual mathematics learning could be applied by teachers when giving material, because contextual learning was expected to help students easily understand the concept of numerical operations that was started from students' daily activities.
ANALYZING STUDENTS’ UNDERSTANDING OF MATHEMATICAL CONCEPT ABOUT TWO-DIMENSIONAL FIGURES AT GRADE III OF ELEMENTARY SCHOOLS IN SERANG Sellina Ayu Kusumaningrum; Heni Pujiastuti
Primary: Jurnal Pendidikan Guru Sekolah Dasar Vol. 10 No. 5 (2021): October
Publisher : Laboratorium Program Studi Pendidikan Guru Sekolah Dasar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33578/jpfkip.v10i5.8417

Abstract

The purpose of this research was to analyze the students' understanding of mathematical concepts about two-dimensional figures at the elementary school. This qualitative descriptive study involved 40 third grade students at one of the public elementary schools in Serang. An understanding of mathematical concepts in solving the problem of two-dimensional figures materials referred to 5 indicators, namely defining the concept in writing, identifying examples and non-examples, presenting a concept in the form of models, diagrams, and symbols, changing one form of representation to another, and recognizing the conditions that determine a concept. This research found that the percentage for defining the concept in writing was 37.5%, meaning that students were still not able to define the concept in writing. Then, the percentage for identifying examples and non-examples was 32.5%, meaning that students were still not able to identify examples and non-examples. The percentage for presenting a concept in the form of models, diagrams, and symbols was 77.5%, meaning that students were able to present a concept in the form of models, diagrams, and symbols. After that, the percentage for changing one form of representation to another was 27.5%, meaning that students still could not change one form of representation to another. Finally, the percentage for recognizing the conditions that determine a concept was 72.5%, meaning that students were able to recognize the conditions that determined a concept.
Co-Authors Hepsi Nindiasari Maya Sintya Sumarna Novaliyosi Sellina Ayu Kusumaningrum Shafira Yaumil Alin Tiolina Delarosa Aritonang Yuyu Yuhana