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Fajar Arianto
Laboratorium Fisika Radiasi Dan Fisika Medik, Departemen Fisika Universitas Diponegoro, Jl. Prof. Soedarto SH Tembalang Semarang
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Journal : Jurnal Pendidikan MIPA

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Measuring Creative Thinking Skills Using the Feasibility of Mathematics Problems with an Open-Ended Approach in Two-Dimensional Plane Geometry Topic Setyaedhi, Hari Sugiharto; Arianto, Fajar; Mubarok, Husni
Jurnal Pendidikan MIPA Vol 26, No 2 (2025): Jurnal Pendidikan MIPA
Publisher : FKIP Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpmipa.v26i2.pp1173-1195

Abstract

The study aims to develop and validate open-ended mathematics questions, where measuring students' abilities at the field test stage is part of the final validation process to show that the instrument is functional. The development model with Tessmer's formative evaluation approach includes self-evaluation, expert review, one-to-one, small group, and field tests. The participants included one lecturer, two mathematics teachers, and students from grade IX. Individual trials involved three students, small group trials 12 students, and field trials 40 students. The data obtained came from quantitative and qualitative data. The instruments used included observation sheets, interviews, questionnaires, and tests. Analysis for quantitative data was carried out using the SPSS application. The findings of the study indicate that (1) this study produces a mathematics question product with an open-ended approach of 5 descriptive questions. Content validity (90.33%), construct validity (94.25%), and language validity (92.25%). High validity is caused by the formulation of questions that explicitly ask students to provide various ways, which directly target indicators of fluency and flexibility in creative thinking. In addition, the validity of each question item in the small group, namely r count > r table (0.576), with a reliability value of 0.931. (2) Open-ended math questions that are valid and reliable, so that they are used to measure students' creative skills in problem solving. Based on the results of the field test (20% of students are very creative, 30% creative, 10% quite creative, 5% not creative, and 5% very not creative), this proves that the instrument developed is able to differentiate the level of student ability. This study concludes that the development of math questions with an open-ended approach is feasible to be applied to measure creative thinking skills in solving math problems related to the two-dimensional plane geometry topic.      Keywords: creative skills, feasibility of mathematical problems, open-ended approach, two-dimensional plane geometry topic.
Co-Authors ABDUL MANAF Abror, Sirojuddin Achmad Sjaifudin Tayibnapis Ade Ika Susan Agusti, Fiqrie Restia Agustina, Sheila Ainurrahmi, Ainurrahmi ALFINA RAHMAWATI, DIAN Ali Khumaeni ALIM SUMARNO AMALIA WAHYUNINGTYAS, ISTI Anas Ahmadi Andi Kristanto Andi Mariono Andi Wibowo Kinandana Anitasari, Emi Anwar Usman Armilah, Mila Siti Asep Yoyo Wardaya Auliyani, Chaeriyatun Nissa Azizul Khakim, Azizul Bachri, Bachtiar S. Bachri, Bachtiar Sjaiful Badiah, Lutfi Isni Bambang Yulianto Binar Kurnia Prahani Chrisdian, Viddo Citra Fitri Kholidya Dahurandi, Keristian Darliawati, Herli Darmanto Darmanto Dewantari, Aditya Dewantoro, Muhammad Dhiaulhaq, Shifiyan Ahmad Dhyan Prastiwi Emi Anitasari Erma Prihastanti Fatah Yasin FAUZI ADHIM, MUHAMMAD Febry Fitriani FITRIA, ZOIMATUL Fuad Anwar, Fuad Gunawan Gunawan Hadi Prasetyo Utomo Hamdiyah, Heni Handayani, Liska Tri Handayani, Nita Hariyati, Mutty Harmanto Harmanto HASAN SUBEKTI Hasan, Siti Nurjannah Hasnawati, Lina Hayati, Widia Herli Darliawati Hisyam, Hisyam Husni Mubarok Iis Nurhasanah Isa Ansori Islami, Jundu Muhammad Mufakkirul Istiqomah Istiqomah Juari, S K Sofjan Firdausi khusnul khotimah Kusuma, Annisa Dian Kusumandari, Kusumandari Layli Hidayah Lestariningsih, Ayun Rahayu Liska Tri Handayani M.A. Muazar Habibi Maharani, Rosy Puspa Martadi, Martadi Maureen, Irena Y. Medina, Alfiarani Meisa Diningrat, Syaiputra Wahyuda Moh Jazuli, Moh Muhammad Adrian Lathif Muhammad Hanif Muhammad Nur Muhammad Nur Muhammad Nur Muhammad Nur Mustaji Mustaji, Mustaji Ngurah Ayu Ketut Umiati Novan Prawira, Dyon Nufus, Asyifa’un Nur, Muhammad Nurhasanah Nurhasanah Nurul Azmi, Nurul Nuryati, Dwi Wahyu Nurzanah, Salsabilla Choerunnisa Pandji Triadyaksa Prasetyo Basuki Prastiwi, Dhyan Pratama Jujur Wibawa Priyono Priyono PUSPITA WIRASARI, ENGGAL Putra, Riko Putri, Weni Antari Ramadhan, Avinda Zakcy Rayhani, Fauziah Rety, Dahniarti Cahyani Riyatun, Riyatun Rohid, Nabrisi Rohid, Nibrosu RR. Ella Evrita Hestiandari Rusijono, Rusijono Rusjiono Rusjiono sahamudin, Sahamudin Saraslifah Saraslifah Setyaedhi, Hari Sugiharto Shofiana, Fahlulia Rahma Sholehah Aisyah Siti Khodijah Siti Masitoh Sueb Suharyana Suharyana Sumariyah Sumariyah Susarno, Lamijan Hadi SYAIPUTRA WAHYUDA MEISA DINING Tayibnapis, Achmad Sjaifudin Terananda, Nabila Zuhroh Ukhti Nurohma Rizki Utari Dewi Utari Utari Very Richardina Wahyu Setia Budi Waode Hamsia, Waode Wasilatul Murtafiah Wienda Intan Permatasari YATIM RIYANTO Youhanita, Ety Yudha Arman Zaenul Muhlisin Zahroh, Mihnatuz