Abstrak: Miskonsepsi siswa dalam penjumlahan dan pengurangan bilangan bulat perlu diatasi karena materi ini merupakan prasyarat bagi siswa untuk mempelajari materi matematika lanjutan seperti aljabar. Kesalahan dalam memahami konsep prasyarat akan menghambat penerimaan dan integrasi pengetahuan baru. Penelitian ini bertujuan mengembangkan media pembelajaran refutation text untuk mengatasi miskonsepsi siswa dalam penjumlahan dan pengurangan bilangan bulat. Refutation text yang dikembangkan berbentuk Lembar Kerja Siswa (LKS) dengan merujuk pada model pengembangan Borg dan Gall (1983). Uji coba refutation text dilakukan pada 15 orang siswa SMP kelas VII. Hasil penelitian menunjukkan bahwa (1) hasil penilaian ahli menunjukkan refutation text layak digunakan sebagai media pembelajaran bagi guru dalam mengajarkan penjumlahan dan pengurangan bilangan bulat; (2) refutation text yang diterapkan di kelas uji coba efektif dalam mengatasi miskonsepsi siswa dalam penjumlahan dan pengurangan bilangan bulat; dan (3) hasil penilaian praktisi dan respon siswa menunjukkan bahwa refutation text praktis digunakan sebagai media pembelajaran untuk mengatasi miskonsepsi siswa. Dalam hal ini, refutation text yang dikembangkan membantu siswa memperbaiki kesalahan konsep pada materi penjumlahan dan pengurangan bilangan bulat dan bisa digunakan oleh guru di kelas. Namun, refutation text tersebut perlu dikembangkan untuk mengantisipasi kesalahan siswa dalam mengintepretasi soal cerita dengan menyediakan beberapa kemungkinan kesalahan intepretasi dan perbaikan.Abstract: Students' misconceptions in addition and subtraction of integers need to be addressed since this topic is a prerequisite for students to learn advanced mathematics topics such as algebra. Having misconceptions in understanding the prerequisite concepts will hamper the acquisition and integration of new knowledge. The purpose of this study was to develop refutation text to resolve the misconception of students in addition and subtraction of integers. Refutation text was developed in the form of student worksheet adopting the development model from Borg and Gall (1983). Tryout of refutation text involved fifteen seventh-grade students. The study found that (1) The experts' validation reveals that refutation text is suitable to be used as learning media for students on addition and subtraction of integers; (2) The refutation text implemented in the tryout was useful to resolve students' misconception in addition and subtraction of integers; and (3) The practitioner's assessment and students' response showed that refutation text is practical. Drawing from the findings, we argue that the developed refutation text help students correcting their misconceptions in the topics and could be used by the teachers in the classroom practices. However, the refutation text needs to be extended to anticipate students' mistake in interpreting word problems by providing some possible mistakes and its correction.
<p>Tujuan penelitian dalam penelitian adalah untuk mengetahui proses pengembangan bahan ajar mata kuliah matematika diskrit dalam meningkatkan kemampuan pemecahan masalah matematis mahasiswa IKIP PGRI Pontianak. Metode penelitian ini adalah penelitian pengembangan dengan Metode <em>Research and Development </em>(R&D). Berdasarkan hasil pengembangan, penelitian, dan pembahasan dapat disimpulkan bahwa buku ajar matematika diskrit dalam meningkatkan kemampuan pemecahan masalah matematis mahasiswa IKIP PGRI Pontianak adalah layak, menarik dan dapat meningkatkan kemampuan pemecahan masalah matematis mahasiswa.</p>
<em>The purpose of this research is to find out the design of an Adobe Flash CS5-based computer media on the quadrilateral concept material and how far this medium can facilitate understanding of the quadrilateral concept. It is a development research with stages consisting of needs analysis, computer media compilation, limited product trial and product evaluation. Data analysis performed for questionnaire of medium component evaluation is quantitative data analysis, while for questionnaire of medium material evaluation and student’s learning results, which are pre-test and post-test, is qualitative data analysis. The use of the medium can help students to improve their concept understanding of 42.969% and to keep answering with the right answer of 26.563%. The result of medium evaluation questionnaire on media being developed is good with average score of 33.75 from maximum score of 38. This shows that the media is useful to facilitate the quadrilateral concept learning in a classroom</em>
<p>Penelitian ini bertujuan untuk menghasilkan modul yang berbasis pendekatan <em>Realistic Matheatics Education</em> (RME) terhadap pemahaman konsep dalam yang mencapai tingkat kevalidan, kepraktisan, dan keefektifan. Penelitian ini merupakan penelitian pengembangan dimana prosedur penelitian yang digunakan adalah pengembangan model 4-D yaitu <em>define</em> (pendefinisian), <em>design</em> (perancangan), <em>development</em> (pengembangan) dan <em>dessiminate</em> (penyebaran) yang dikembangkan oleh Thiagarajan pada tahun 1974. Hasil penelitian yang pertama adalah validitas modul dengan persentase sebesar 91,74% dalam kriteria sangat valid. Yang kedua adalah nilai kepratisan dengan persentase sebesar 82,26% dalam kriteria sangat praktis. Yang ketiga adalah nilai keefektifan diperoleh nilai sebesar 75,61% dalam kriteria efektif. Dengan demikian dapat disimpulkan bahwa pengembangan modul berbasis pendekatan <em>Realistic Mathematics Education</em> (RME) terhadap pemahaman konsep tergolong valid, praktis dan efektif untuk digunakan.</p><p> </p>
<em>The purpose of the</em> research<em> in the study was to study the development of learning discovery-based pocket book media on students' mathematical understanding abilities. The research methodology used is the method of research and development (R & D). Based on the results of development, research, and discussion, it can be concluded that the development of learning discovery-based pocket book media on mathematical understanding skills reaches a level of validity with excellent categories and achieves practicality with very practical criteria</em>
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