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References
- Ahmad, S., Prahmana, R. C. I., Kenedi, A. K., Helsa, Y., Arianil, Y., & Zainil, M. (2017). The instruments of higher order thinking skills. Journal of Physics: Conference Series, 943(1). https://doi.org/10.1088/1742-6596/943/1/012053
- Anderson & Krathwohl. (2002). Revisi Taksonomi Bloom (Revised of Bloom;s Taxonomy). Jakarta: Rineka Cipta
- Bakker, A. (2018). Design Research in Education: A Practical Guide for Early Career Researchers
- Bakker, A., & Eerde, V. (2015). An introduction to design-based research with an example from statistics education. In A. Bikner-Ahsbahs, C. Knipping, & N. Presmeg (Eds.), Approaches to Qualitative Research in Mathematics Education (pp. 429-466). New York: Springer. https://doi.org/10.1007/978-94-017-9181-6_16
- Battista, M. T. (2017). Mathematical Reasoning and Sense Making. Reasoning and Sense Making in the Mathematics Classroom: Pre-K-Grade 2, 105(2), 1–19.
- Brown, S., & Walter, M. (1969). What if not? Mathematics Teaching, 46, 38-45.
- Brown, S. I., & Walter, M. I. (1990). The art of problem posing (2nd ed.). Hillsdale, NJ: Erlbaum.
- Bukhatwa, B., Al Ruqeishi, E. N. A., & Al Khamisi, F. M. H. (2022). The Usefulness of Technology-based Interactive Methods in Teaching Mathematics and Statistics at the College Level. Shanlax International Journal of Education, 10(3), 30–40. https://doi.org/10.34293/education.v10i3.4627
- Cai, J., Koichu, B., Rott, B., Zazkis, R., & Jiang, C. (2022). Mathematical problem posing: Task variables, processes, and products. Proceedings of the 45th Conference of the International Group for the Psychology of Mathematics Education, 1, 119–145. http://hdl.handle.net/10045/126487
- Cavanagh, M. (2008). Area measurement in Year 7. Reflections, 33(1), 55-58.
- Çelik, A. Ö., & Güzel, E. B. (2017). Mathematics teachers' knowledge of student thinking and its evidences in their instruction. Journal on Mathematics Education, 8(2), 199-210. https://doi.org/10.22342/jme.8.2.4144.199-210
- Cox, D. C., & Lo, J. (2019). Measurement and Decomposition: Making Sense of the Area of a Circle. Proceedings of the 41st Annual Meeting of PME-NA, 2, 802–810.
- Collins, R. (2014). Skills for the 21st century: Teaching higher-order thinking. Curriculum & Leadership Journal, 12(14).
- Department of Education and Training. (2022). Victorian Skills Plan for 2022 into 2023: a shared vision for skills-led solutions. Victoria: Department of Education and Training
- Ferrándiz, C., Ferrando, M., Soto, G., Sáinz, M., & Prieto, M. D. (2017). Ferrandiz Et Al_2017_Dimensions of Creativity Factor Analysis. Anales De Psicología, 33(1), 40–47.
- Fitri, N. L., & Prahmana, R. C. I. (2020). Designing learning trajectory of circle using the context of Ferris wheel. Journal of Research and Advances in Mathematics Education, 5(3), 247–261. https://doi.org/10.23917/jramathedu.v5i3.10961
- Frambach, J. M., van der Vleuten, C. P. M., & Durning, S. J. (2013). Academic Medicine: Quality criteria in qualitative and quantitative research. Journal of the Association of American Medical Colleges, 88(4), 552.
- Fujita, T., & Jones, K. (2014). Reasoning-and-proving in geometry in school mathematics textbooks in Japan. International Journal of Educational Research, 64, 81-91. https://doi.org/10.1016/j.ijer.2013.09.014
- García-García, J., & Dolores-Flores, C. (2018). Intra-Mathematical Connections Made by High School Students in Performing Calculus Tasks. International Journal of Mathematical Education in Science and Technology, 49(2), 227–252. https://doi.org/10.1080/0020739X.2017.1355994
- Hadi, S., Retnawati, H., Munadi, S., Apino, E., & Wulandari, N. F. (2018). The difficulties of high school students in solving higher-order thinking skills problems. Problems of Education in the 21st Century, 76(4), 520–532. https://doi.org/10.33225/pec/18.76.520
- Hirza, B., & Kusumah, Y. S. (2014). Improving Intuition Skills With Realistic. Journal on Mathematics Education, 5(1), 27–34. http://dx.doi.org/10.22342/jme.5.1.1446.27-34
- Homa-Agostinho, I. R., & Oliveira-Groenwald, C. L. (2020). Digital information and communication technologies as a didactic resource in the mathematics curriculum. Uniciencia, 34(2), 153–170. https://doi.org/10.15359/RU.34-2.9
- Huang, H.-M. E., & Witz, K. G. (2013). Children’s Conceptions of Area Measurement and Their Strategies for Solving Area Measurement Problems. Journal of Curriculum and Teaching, 2(1), 10–26. https://doi.org/10.5430/jct.v2n1p10
- Hwang, G., Lai, C., Liang, J., Chu, H., & Tsai, C. (2017). A long-term experiment to investigate the relationships between high school students’ perceptions of mobile learning and peer interaction and higher-order thinking tendencies. Educational Technology Research and Development, 66(1), 75–93. https://doi.org/10.1007/s1142 3-017-9540-3.
- Kay, R., & Ruttenberg-Rozen, R. (2020). Exploring the Creation of Instructional Videos to Improve the Quality of Mathematical Explanations for Pre-Service Teachers. International Journal of E-Learning and Distance Education, 35(1), 1–21.
- Komarudin, Suherman, Puspita, L., Arrafiansyah, R., & Hasanah, U (2020). Program Course Lab 2.4 Mathematics Learning Media for Increasing of Creativity Domain at Higher Order Thinking Skills (HOTS). Journal of Gifted, 7(3), 131–136.
- Laurens, T., & Laamena, C. M. (2020). Development of mathematical learning devices based on multimedia on circle materials of grade eighth of junior high school. Journal of Physics: Conference Series, 1470(1). https://doi.org/10.1088/1742-6596/1470/1/012088
- Lee, K. yuen, & Lai, Y. chi. (2017). Facilitating higher-order thinking with the flipped classroom model: a student teacher’s experience in a Hong Kong secondary school. Research and Practice in Technology Enhanced Learning, 12(1). https://doi.org/10.1186/s41039-017-0048-6
- Lestari, R., Prahmana, R. C. I., Chong, M. S. F., & Shahrill, M. (2023). Developing Realistic Mathematics Education-Based Worksheets for Improving Students’ Critical Thinking Skills. Infinity Journal, 12(1), 69. https://doi.org/10.22460/infinity.v12i1.p69-84
- Lince, R. (2016). Creative Thinking Ability to Increase Student Mathematical of Junior High School by Applying Models Numbered Heads Together. Journal of Education and Practice, 7(6), 206–212.
- Lu, K., Yang, H. H., Shi, Y., & Wang, X. (2021). Examining the key influencing factors on college students’ higher-order thinking skills in the smart classroom environment. International Journal of Educational Technology in Higher Education, 18(1), 1–13. https://doi.org/10.1186/s41239-020-00238-7
- Mahmud, M. S., & Mohd Drus, N. F. (2023). The use of oral questioning to improve students’ reasoning skills in primary school mathematics learning. Frontiers in Education, 8(May), 1–12. https://doi.org/10.3389/feduc.2023.1126816
- McClain, A. & North, T. (2021). Effect of technology integration on middle school math proficiency: A multiple linear regression study. International Journal of Education in Mathematics, Science, and Technology (IJEMST), 9(4), 557-570. https://doi.org/10.46328/ijemst
- Meryansumayeka, Zulkardi, Putri, R. I. I., & Hiltrimartin, C. (2022). Designing geometrical learning activities assisted with ICT media for supporting students’ higher order thinking skills. Journal on Mathematics Education, 13(1), 135–148. https://doi.org/10.22342/jme.v13i1.pp135-148
- Napitupulu, E. E., Suryadi, D., & Kusumah, Y. S. (2016). Cultivating Upper Secondary Students’ Mathematical Reasoning-Ability and Attitude towards Mathematics Through Problem-Based Learning. Journal on Mathematics Education, 7(2), 117–128. https://doi.org/10.22342/jme.7.2.3542.117-128
- National Council of Teachers of Mathematics (NCTM). (2000). Principles and Standards for School Mathematics. USA: NCTM.
- Nurhayati, Sugiatno, & Sayu, S. (2023). Developing HOTS-Based Open Ended Test on Geometry for Junior High School. AKSIOMA: Jurnal Program Studi Pendidikan Matematika, 12(1), 406-418. https://doi.org/10.24127/ajpm.v12i1.6132
- Outhred, L. N., & Mitchelmore, M. C. (2000). Young Children’s Intuitive Understanding of Rectangular Area Measurement. Journal for Research in Mathematics Education, 31(2), 144–167. https://doi.org/10.2307/749749
- OECD. (2018). PISA for Development Mathematics Framework. OECD Publishing.
- OECD. (2019a). Indonesia-Country Note-PISA 2018 Results. OECD Publishing.
- OECD. (2019b). PISA 2018 Assessment and Analytical Framework. OECD Publishing.
- Payadnya, I. P. A. A., Suparta, I. N., Suweken, G., & Sudiarta, M. (2016). Pengembangan Desain Pembelajaran Berbantuan Pertanyaan What-If dalam Upaya Meningkatkan Kemampuan Siswa Menangani Permasalahan Matematika Terbuka. Prosiding Seminar Nasional MIPA, 2, 19–28.
- Plomp, T., & Nieveen. (2013). Educational Design Research Educational Design Research. Netherlands Institute for Curriculum Development: SLO, 1–206. http://www.eric.ed.gov/ERICWebPortal/recordDetail?accno=EJ815766
- Praveen, S., & Leong, K. E. (2013). Effectiveness of Using Geogebra on Students’ Understanding in Learning Circles. The Malaysian Online Journal of Educational Technology, 1(4), 1–11.
- Prahmana, R. C. (2017). Design Research: (Teori dan Implementasinya: Suatu Pengantar). Depok: Rajawali Pers.
- Prensky, M. (2011). From Digital Natives to Digital Wisdom. From Digital Natives to Digital Wisdom, 1–9.
- Rejeki, S., & Putri, R. I. I. (2018). Models to support students’ understanding of measuring area of circles. Journal of Physics: Conference Series, 948(1). https://doi.org/10.1088/1742-6596/948/1/012058
- Rosita, C. D., Nopriana, T., & Silvia, I. (2019). Design of learning materials on circle based on mathematical communication. Infinity Journal, 8(1), 87-98. https://doi.org/10.22460/infinity.v8i1.p87-98
- Sari, D. P., Darhim, & Rosjanuardi, R. (2018). Errors of students learning with react strategy in solving the problems of mathematical representation ability. Journal on Mathematics Education, 9(1), 121–128. https://doi.org/10.22342/jme.9.1.4378.121-128
- Şengül, S., & Katranci, Y. (2015). The Analysis of the Problems Posed by Prospective Mathematics Teachers about ‘Ratio and Proportion’ Subject. Procedia - Social and Behavioral Sciences, 174, 1364–1370. https://doi.org/10.1016/j.sbspro.2015.01.760
- Septia, T., Prahmana, R. C. I., Pebrianto, & Wahyu, R. (2018). Improving students spatial reasoning with course lab. Journal on Mathematics Education, 9(2), 327–336. https://doi.org/10.22342/jme.9.2.3462.327-336
- Simon, M. A. (1995). Reconstructing Mathematics Pedagogy from a Constructivist Perspective Author (s): Martin A. Simon Source: Journal for Research in Mathematics Education, Vol. 26, No. 2 (Mar., 1995), pp. Published by: National Council of Teachers of Mathematics. Journal for Research in Mathematics Education, 26(2), 114–145. http://www.jstor.org/stable/749205
- Son, A. L. (2022). The Students’ Abilities on Mathematical Connections: A Comparative Study Based on Learning Models Intervention. Mathematics Teaching-Research Journal, 14(2), 72–87.
- Song, S., Yim, J., Shin, E., & Lee, H. (2007). Posing Problems With Use the ‘What If Not?’ Strategy in Nim Game 1. Proceedings of the 31 Conference of the International Group for the Psychology of Mathematics Education, 4(1987), 193–200.
- Sofiyan, S., Amalia, R., & Suwardi, A. B. (2020). Development of mathematical teaching materials based on project-based learning to improve students’ HOTS and character. Journal of Physics: Conference Series, 1460(1), 012006.
- Tan, S., Zou, L., Wijaya, T. T., & Dewi, N. S. S. (2020). Improving Student Creative Thinking Ability With Problem Based Learning Approach Using Hawgent Dynamic Mathematics Software. Journal on Education, 2(4), 303–312. https://doi.org/10.31004/joe.v2i4.324
- Tanudjaya, C. P., & Doorman, M. (2020). Examining higher order thinking in Indonesian lower secondary mathematics classrooms. Journal on Mathematics Education, 11(2), 277–300. https://doi.org/10.22342/jme.11.2.11000.277-300
References
Ahmad, S., Prahmana, R. C. I., Kenedi, A. K., Helsa, Y., Arianil, Y., & Zainil, M. (2017). The instruments of higher order thinking skills. Journal of Physics: Conference Series, 943(1). https://doi.org/10.1088/1742-6596/943/1/012053
Anderson & Krathwohl. (2002). Revisi Taksonomi Bloom (Revised of Bloom;s Taxonomy). Jakarta: Rineka Cipta
Bakker, A. (2018). Design Research in Education: A Practical Guide for Early Career Researchers
Bakker, A., & Eerde, V. (2015). An introduction to design-based research with an example from statistics education. In A. Bikner-Ahsbahs, C. Knipping, & N. Presmeg (Eds.), Approaches to Qualitative Research in Mathematics Education (pp. 429-466). New York: Springer. https://doi.org/10.1007/978-94-017-9181-6_16
Battista, M. T. (2017). Mathematical Reasoning and Sense Making. Reasoning and Sense Making in the Mathematics Classroom: Pre-K-Grade 2, 105(2), 1–19.
Brown, S., & Walter, M. (1969). What if not? Mathematics Teaching, 46, 38-45.
Brown, S. I., & Walter, M. I. (1990). The art of problem posing (2nd ed.). Hillsdale, NJ: Erlbaum.
Bukhatwa, B., Al Ruqeishi, E. N. A., & Al Khamisi, F. M. H. (2022). The Usefulness of Technology-based Interactive Methods in Teaching Mathematics and Statistics at the College Level. Shanlax International Journal of Education, 10(3), 30–40. https://doi.org/10.34293/education.v10i3.4627
Cai, J., Koichu, B., Rott, B., Zazkis, R., & Jiang, C. (2022). Mathematical problem posing: Task variables, processes, and products. Proceedings of the 45th Conference of the International Group for the Psychology of Mathematics Education, 1, 119–145. http://hdl.handle.net/10045/126487
Cavanagh, M. (2008). Area measurement in Year 7. Reflections, 33(1), 55-58.
Çelik, A. Ö., & Güzel, E. B. (2017). Mathematics teachers' knowledge of student thinking and its evidences in their instruction. Journal on Mathematics Education, 8(2), 199-210. https://doi.org/10.22342/jme.8.2.4144.199-210
Cox, D. C., & Lo, J. (2019). Measurement and Decomposition: Making Sense of the Area of a Circle. Proceedings of the 41st Annual Meeting of PME-NA, 2, 802–810.
Collins, R. (2014). Skills for the 21st century: Teaching higher-order thinking. Curriculum & Leadership Journal, 12(14).
Department of Education and Training. (2022). Victorian Skills Plan for 2022 into 2023: a shared vision for skills-led solutions. Victoria: Department of Education and Training
Ferrándiz, C., Ferrando, M., Soto, G., Sáinz, M., & Prieto, M. D. (2017). Ferrandiz Et Al_2017_Dimensions of Creativity Factor Analysis. Anales De Psicología, 33(1), 40–47.
Fitri, N. L., & Prahmana, R. C. I. (2020). Designing learning trajectory of circle using the context of Ferris wheel. Journal of Research and Advances in Mathematics Education, 5(3), 247–261. https://doi.org/10.23917/jramathedu.v5i3.10961
Frambach, J. M., van der Vleuten, C. P. M., & Durning, S. J. (2013). Academic Medicine: Quality criteria in qualitative and quantitative research. Journal of the Association of American Medical Colleges, 88(4), 552.
Fujita, T., & Jones, K. (2014). Reasoning-and-proving in geometry in school mathematics textbooks in Japan. International Journal of Educational Research, 64, 81-91. https://doi.org/10.1016/j.ijer.2013.09.014
García-García, J., & Dolores-Flores, C. (2018). Intra-Mathematical Connections Made by High School Students in Performing Calculus Tasks. International Journal of Mathematical Education in Science and Technology, 49(2), 227–252. https://doi.org/10.1080/0020739X.2017.1355994
Hadi, S., Retnawati, H., Munadi, S., Apino, E., & Wulandari, N. F. (2018). The difficulties of high school students in solving higher-order thinking skills problems. Problems of Education in the 21st Century, 76(4), 520–532. https://doi.org/10.33225/pec/18.76.520
Hirza, B., & Kusumah, Y. S. (2014). Improving Intuition Skills With Realistic. Journal on Mathematics Education, 5(1), 27–34. http://dx.doi.org/10.22342/jme.5.1.1446.27-34
Homa-Agostinho, I. R., & Oliveira-Groenwald, C. L. (2020). Digital information and communication technologies as a didactic resource in the mathematics curriculum. Uniciencia, 34(2), 153–170. https://doi.org/10.15359/RU.34-2.9
Huang, H.-M. E., & Witz, K. G. (2013). Children’s Conceptions of Area Measurement and Their Strategies for Solving Area Measurement Problems. Journal of Curriculum and Teaching, 2(1), 10–26. https://doi.org/10.5430/jct.v2n1p10
Hwang, G., Lai, C., Liang, J., Chu, H., & Tsai, C. (2017). A long-term experiment to investigate the relationships between high school students’ perceptions of mobile learning and peer interaction and higher-order thinking tendencies. Educational Technology Research and Development, 66(1), 75–93. https://doi.org/10.1007/s1142 3-017-9540-3.
Kay, R., & Ruttenberg-Rozen, R. (2020). Exploring the Creation of Instructional Videos to Improve the Quality of Mathematical Explanations for Pre-Service Teachers. International Journal of E-Learning and Distance Education, 35(1), 1–21.
Komarudin, Suherman, Puspita, L., Arrafiansyah, R., & Hasanah, U (2020). Program Course Lab 2.4 Mathematics Learning Media for Increasing of Creativity Domain at Higher Order Thinking Skills (HOTS). Journal of Gifted, 7(3), 131–136.
Laurens, T., & Laamena, C. M. (2020). Development of mathematical learning devices based on multimedia on circle materials of grade eighth of junior high school. Journal of Physics: Conference Series, 1470(1). https://doi.org/10.1088/1742-6596/1470/1/012088
Lee, K. yuen, & Lai, Y. chi. (2017). Facilitating higher-order thinking with the flipped classroom model: a student teacher’s experience in a Hong Kong secondary school. Research and Practice in Technology Enhanced Learning, 12(1). https://doi.org/10.1186/s41039-017-0048-6
Lestari, R., Prahmana, R. C. I., Chong, M. S. F., & Shahrill, M. (2023). Developing Realistic Mathematics Education-Based Worksheets for Improving Students’ Critical Thinking Skills. Infinity Journal, 12(1), 69. https://doi.org/10.22460/infinity.v12i1.p69-84
Lince, R. (2016). Creative Thinking Ability to Increase Student Mathematical of Junior High School by Applying Models Numbered Heads Together. Journal of Education and Practice, 7(6), 206–212.
Lu, K., Yang, H. H., Shi, Y., & Wang, X. (2021). Examining the key influencing factors on college students’ higher-order thinking skills in the smart classroom environment. International Journal of Educational Technology in Higher Education, 18(1), 1–13. https://doi.org/10.1186/s41239-020-00238-7
Mahmud, M. S., & Mohd Drus, N. F. (2023). The use of oral questioning to improve students’ reasoning skills in primary school mathematics learning. Frontiers in Education, 8(May), 1–12. https://doi.org/10.3389/feduc.2023.1126816
McClain, A. & North, T. (2021). Effect of technology integration on middle school math proficiency: A multiple linear regression study. International Journal of Education in Mathematics, Science, and Technology (IJEMST), 9(4), 557-570. https://doi.org/10.46328/ijemst
Meryansumayeka, Zulkardi, Putri, R. I. I., & Hiltrimartin, C. (2022). Designing geometrical learning activities assisted with ICT media for supporting students’ higher order thinking skills. Journal on Mathematics Education, 13(1), 135–148. https://doi.org/10.22342/jme.v13i1.pp135-148
Napitupulu, E. E., Suryadi, D., & Kusumah, Y. S. (2016). Cultivating Upper Secondary Students’ Mathematical Reasoning-Ability and Attitude towards Mathematics Through Problem-Based Learning. Journal on Mathematics Education, 7(2), 117–128. https://doi.org/10.22342/jme.7.2.3542.117-128
National Council of Teachers of Mathematics (NCTM). (2000). Principles and Standards for School Mathematics. USA: NCTM.
Nurhayati, Sugiatno, & Sayu, S. (2023). Developing HOTS-Based Open Ended Test on Geometry for Junior High School. AKSIOMA: Jurnal Program Studi Pendidikan Matematika, 12(1), 406-418. https://doi.org/10.24127/ajpm.v12i1.6132
Outhred, L. N., & Mitchelmore, M. C. (2000). Young Children’s Intuitive Understanding of Rectangular Area Measurement. Journal for Research in Mathematics Education, 31(2), 144–167. https://doi.org/10.2307/749749
OECD. (2018). PISA for Development Mathematics Framework. OECD Publishing.
OECD. (2019a). Indonesia-Country Note-PISA 2018 Results. OECD Publishing.
OECD. (2019b). PISA 2018 Assessment and Analytical Framework. OECD Publishing.
Payadnya, I. P. A. A., Suparta, I. N., Suweken, G., & Sudiarta, M. (2016). Pengembangan Desain Pembelajaran Berbantuan Pertanyaan What-If dalam Upaya Meningkatkan Kemampuan Siswa Menangani Permasalahan Matematika Terbuka. Prosiding Seminar Nasional MIPA, 2, 19–28.
Plomp, T., & Nieveen. (2013). Educational Design Research Educational Design Research. Netherlands Institute for Curriculum Development: SLO, 1–206. http://www.eric.ed.gov/ERICWebPortal/recordDetail?accno=EJ815766
Praveen, S., & Leong, K. E. (2013). Effectiveness of Using Geogebra on Students’ Understanding in Learning Circles. The Malaysian Online Journal of Educational Technology, 1(4), 1–11.
Prahmana, R. C. (2017). Design Research: (Teori dan Implementasinya: Suatu Pengantar). Depok: Rajawali Pers.
Prensky, M. (2011). From Digital Natives to Digital Wisdom. From Digital Natives to Digital Wisdom, 1–9.
Rejeki, S., & Putri, R. I. I. (2018). Models to support students’ understanding of measuring area of circles. Journal of Physics: Conference Series, 948(1). https://doi.org/10.1088/1742-6596/948/1/012058
Rosita, C. D., Nopriana, T., & Silvia, I. (2019). Design of learning materials on circle based on mathematical communication. Infinity Journal, 8(1), 87-98. https://doi.org/10.22460/infinity.v8i1.p87-98
Sari, D. P., Darhim, & Rosjanuardi, R. (2018). Errors of students learning with react strategy in solving the problems of mathematical representation ability. Journal on Mathematics Education, 9(1), 121–128. https://doi.org/10.22342/jme.9.1.4378.121-128
Şengül, S., & Katranci, Y. (2015). The Analysis of the Problems Posed by Prospective Mathematics Teachers about ‘Ratio and Proportion’ Subject. Procedia - Social and Behavioral Sciences, 174, 1364–1370. https://doi.org/10.1016/j.sbspro.2015.01.760
Septia, T., Prahmana, R. C. I., Pebrianto, & Wahyu, R. (2018). Improving students spatial reasoning with course lab. Journal on Mathematics Education, 9(2), 327–336. https://doi.org/10.22342/jme.9.2.3462.327-336
Simon, M. A. (1995). Reconstructing Mathematics Pedagogy from a Constructivist Perspective Author (s): Martin A. Simon Source: Journal for Research in Mathematics Education, Vol. 26, No. 2 (Mar., 1995), pp. Published by: National Council of Teachers of Mathematics. Journal for Research in Mathematics Education, 26(2), 114–145. http://www.jstor.org/stable/749205
Son, A. L. (2022). The Students’ Abilities on Mathematical Connections: A Comparative Study Based on Learning Models Intervention. Mathematics Teaching-Research Journal, 14(2), 72–87.
Song, S., Yim, J., Shin, E., & Lee, H. (2007). Posing Problems With Use the ‘What If Not?’ Strategy in Nim Game 1. Proceedings of the 31 Conference of the International Group for the Psychology of Mathematics Education, 4(1987), 193–200.
Sofiyan, S., Amalia, R., & Suwardi, A. B. (2020). Development of mathematical teaching materials based on project-based learning to improve students’ HOTS and character. Journal of Physics: Conference Series, 1460(1), 012006.
Tan, S., Zou, L., Wijaya, T. T., & Dewi, N. S. S. (2020). Improving Student Creative Thinking Ability With Problem Based Learning Approach Using Hawgent Dynamic Mathematics Software. Journal on Education, 2(4), 303–312. https://doi.org/10.31004/joe.v2i4.324
Tanudjaya, C. P., & Doorman, M. (2020). Examining higher order thinking in Indonesian lower secondary mathematics classrooms. Journal on Mathematics Education, 11(2), 277–300. https://doi.org/10.22342/jme.11.2.11000.277-300