This research is a literature study with a qualitative approach. This research is motivated by the importance of students' understanding of the material properties of quadrilaterals. The purpose of this study is that researchers want to find out whether Van Hiele's theory and contextual approaches are effective in increasing the understanding of fifth grade elementary school students about the material properties of quadrilaterals. Van Hiele's theory is a theory that is specifically used in the field of geometry which has 5 stages of learning, namely the information stage, the directed orientation stage, the explicitization stage, the free orientation stage, and the integration stage. While the contextual approach emphasizes on 7 contextual components, namely: (1) Constructivism, (2) Asking, (3) Finding, (4) Learning Society, (5) Modeling, (6) Reflection, (7) Actual assessment. So that learning is obtained through knowledge and experience or the real world, improving students' higher order thinking processes, student-centered, active students, critical, creative, problem solving, students learn in a fun, exciting, not boring, and use various learning resources. The results of this study indicate that there is an increase in students' understanding of the material properties of quadrilaterals by using Van Hiele's learning theory and contextual approach.
<p>Penelitian ini dilatar belakangi oleh minimnya pemanfaatan media pembelajaran yang mengakomodasi keinginan siswa tentang pembelajaran matematika yang menyenangkan dan memudahkan guru menyampaikan materi. Penelitian ini bertujuan mengetahui cara dan dampak dari pengembangan media pembelajaran bangun ruang sisi datar berbasis <em>Adobe Flash Professional CS5.</em></p><p>Penelitian ini termasuk penelitian pengembangan (<em>Research and Development). </em>Prosedur penelitian pengembangan yang digunakan adalah hasil modifikasi dari model pengembangan Borg and Gall dan model pengembangan Sugiyono, yang meliputi lima langkah pengembangan: (1) studi pendahuluan, (2) pengembangan media pembelajaran, (3) validasi produk, (4) instrumen uji coba terbatas, dan (5) uji coba terbatas. Subjek penelitian ini adalah siswa kelas VIII di salah satu SMP negeri di Yogyakarta. Objek pada penelitian ini adalah media pembelajaran bangun ruang sisi datar berbasis <em>Adobe Flash Professional CS5. </em>Teknik pengumpulan data yang digunakan adalah kuesioner, observasi, wawancara dan dokumentasi.<em></em></p>Hasil penelitian ini berupa media pembelajaran bangun ruang sisi datar berbasis <em>Adobe Flash Professional CS5. </em>Kualitas media termasuk kategori “Sangat Baik” dengan presentase keidealan sebesar 86,36 %. Media pembelajaran yang dihasilkan, memberikan gambaran kepada guru tentang pengembangan media pembelajaran berbasis <em>Adobe Flash Professional CS5</em>. Siswa lebih aktif dan antusias dalam peoses pembelajaran dan meningkatkan hasil belajar siswa sebesar 67,31 % berdasarkan hasil <em>pretest </em>dan <em>posttest</em>.
At schools, many teachers generally applied a conventional way of teaching mathematics. Students were only required to achieve cognitive learning success. This study aimed to develop mathematics learning media for lessons related to pyramids using the Reflective Pedagogical Paradigm (RPP) and Van Hiele theory, including the development steps and student and teacher responses to the learning process. The researchers used the research and development procedures by Borg and Gall that include (1) Preliminary studies; (2) Planning Research; (3) Design Development; (4) Limited Trial; (5) Revision of Limited Field Test Results. The learning tools developed were syllabus, lesson plans, modules, worksheets, formative tests, and attitude assessments. The data collection techniques used were observation, distributing questionnaires, interviews, and tests. Based on the validation results, the learning media got 4.19, thus categorized as "good," and students' response to the learning process reached 128.23, thus categorized as "good" as well. Students and teachers carried out learning happily and actively.
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