Ahmed, A., Melesse, S., & Wondimuneh, T. (2020). Students’ perception of the application of cooperative problem-solving method and its effect on mathematics performance: The case of secondary schools in Awi-zone, Ethiopia. Research in Pedagogy, 10(1), 1–12. https://doi.org/10.5937/istrped2001001a

Anderson, T. (2011). The theory and practice of online learning (2nd ed.). AU Press.

Ardiyanti, Haninda, B., & Tina, Y. (2014). Analisis kesalahan siswa dalam menyelesaikan soal cerita matematika [Analyze student errors in solving math story problems]. Unila Journal of Mathematics Education/ Jurnal Pendidikan Matematika Unila, 2(7), 1–9. https://doi.org/10.21831/pg.v14i1.21481

Baharuddin, & Wahyuni, E. N. (2015). Teori belajar & pembelajaran [Learning and teaching theory]. Ar-ruzz Media.

Bailey, J. (2017). Embedding problem-solving in a primary mathematics programme. Waikato Journal of Education, 22(4), 19–31. https://doi.org/10.15663/wje.v22i4.555

Boonen, A. J. H., de Koning, B. B., Jolles, J., & van der Schoot, M. (2016). Word problem solving in contemporary math education: A plea for reading comprehension skills Training. Frontiers in Psychology, 7, 1-10. https://doi.org/10.3389/fpsyg.2016.00191

Budiyono. (2015). Statistika untuk penelitian [Statistics for research]. UNS Press.

Budiyono. (2017). Pengantar metodologi penelitian pendidikan [Introduction to educational research methodology]. UNS Press.

De Jong, T. (2010). Cognitive load theory, educational research, and instructional design: Some food for thought. Instructional Science, 38(2), 105–134. https://doi.org/10.1007/ s11251-009-9110-0

Demitra, & Sarjoko. (2018). Effects of handep cooperative learning based on indigenous knowledge on mathematical problem solving skill. International Journal of Instruction, 11(2), 103–114. https://doi.org/10.12973/iji.2018.1128a

Dewi, S. K., Suarjana, I. M., & Sumantri, M. (2014). Penerapan model polya untuk meningkatkan hasil belajar dalam memecahkan soal cerita matematika siswa kelas V [Application of the polya model to improve learning outcomes in solving mathematical word problems of the fifth grade students]. Journal of Primary School Teacher Education Pulpit Ganesha Education University/ Jurnal Mimbar PGSD Universitas Pendidikan Ganesha, 2(1), 1–10. https://doi.org/10.23887/jjpgsd.v2i1.2057

Dharma, I. M. A., Suarjana, I. M., & Suartama, I. K. (2016). Analisis kemampuan menyelesaikan soal cerita siswa kelas IV SD Negeri Banjar Bali [Analysis of the ability to complete word problems for the fourth grade students of the Banjar state elementary school in Bali]. Journal of Primary School Teacher Education Pulpit Ganesha Education University/ Mimbar PGSD Universitas Pendidikan Ganesha, 4(1), 1–10. https://doi.org/10.23887/jjpgsd.v4i1.7193

Espinal, M. L. M., & Gelvez, D. Y. P. (2020). Método de Pólya como estrategia pedagógica para fortalecer la competencia resolución de problemas matemáticos con operaciones básicas [Polya's method as a pedagogical strategy to strengthen the ability to solve mathematical problems with basic operations]. Near Zone/ Zona Próxima, (31), 8-25. https://doi.org/10.14482/zp.31.372.7

Germain-Williams, T. L. (2017). Teaching children to love problem-solving: a reference from birth through adulthood. World Scientific Publishing Co. Pte. Ltd. https://doi.org/10.1142/10415

Gunawan, G., Harjono, A., Nisyah, M. A., Kusdiastuti, M., & Herayanti, L. (2020). Improving students' problem-solving skills using inquiry learning model combined with advance organizer. International Journal of Instruction, 13(4), 427-442. https://doi.org/10.29333/ iji.2020.13427a

Harter, C. A., & Ku, H.-Y. (2008). The effects of spatial contiguity within computer-based instruction of group personalized two-step mathematics word problems. Computers In Human Behavior, 24(4), 1668–1685. https://doi.org/10.1016/j.chb.2007. 06.006

Harvey, S., & Goudvis, A. (2007). Strategies that work: Teaching comprehension for understanding and engagement (2nd ed.). Stenhouse Publishers.

Hobri, Ummah, I. K., Yuliati, N., & Dafik. (2020). The effect of jumping task based on creative problem solving on students problem solving ability. International Journal of Instruction, 13(1), 387–406. https://doi.org/10.29333/iji.2020.13126a

Hulaikah, M., Degeng, I. N. S., Sulton, & Murwani, F. D. (2020). The effect of experiential learning and adversity quotient on problem solving ability. International Journal of Instruction, 13(1), 869–884. https://doi.org/10.29333/iji.2020.13156a

Irwanto, Saputro, A. D., Rohaeti, E., & Prodjosantoso, A. K. (2018). Promoting critical thinking and problem solving skills of preservice elementary teachers through process-oriented guided-inquiry learning (POGIL). International Journal of Instruction, 11(4), 777–794. https://doi.org/10.12973/iji.2018.11449a

Karatas, I., & Baki, A. (2013). The effect of learning environments based on problem solving on students achievements of problem solving. International Electronic Journal of Elementary Education, 5(3), 249–267.

Kaya, D., Izgiol, D., & Kesan, C. (2014). The investigation of elementary mathematics teacher candidates’ problem solving skills according to various variables. International Electronic Journal of Elementary Education, 6(2), 295–314.

Kemendikbud. (2014). Konsep dan implementasi kurikulum 2013 [Concept and implementation of the 2013 curriculum]. Indonesian Ministry of Education and Culture.

Kivunja, C. (2015). Exploring the pedagogical meaning and implications of the 4cs “super skills” for the 21st century through bruner’s 5e lenses of knowledge construction to improve pedagogies of the new learning paradigm. Creative Education, 6, 224-239. https://doi.org/10.4236/ce.2015.62021

Kızıltoprak, A., & Köse, N. Y. (2017). Relational thinking: The bridge between arithmetic and algebra. International Electronic Journal of Elementary Education, 10(1), 131–145. https://doi.org/10.26822/iejee.2017131893

Kojo, A., Laine, A., & Näveri, L. (2018). How did you solve it? – Teachers’ approaches to guiding mathematics problem solving. LUMAT: International Journal on Math, Science and Technology Education, 6(1), 22–40. https://doi.org/10.31129/LUMAT.6.1.294

Kramarski, B. (2017). Developing a pedagogical problem solving view for mathematics teachers with two reflection programs. International Electronic Journal of Elementary Education, 2(1), 137–153.

Mädamürk, K., Kikas, E., & Palu, A. (2016). Developmental trajectories of calculation and word problem solving from third to fi fth grade. Learning and Individual Differences, 49, 151–161. https://doi.org/10.1016/j.lindif.2016.06.007

Mautone, P. D., & Mayer, R. E. (2001). Signaling as a cognitive guide in multimedia learning. Journal of Educational Psychology, 93(2), 377–389. https://doi.org/10.1037/0022-0663.93.2.377

Moleong, L. J. (2010). Metodologi penelitian kualitatif [Qualitative research methodology]. Remaja Rosdakarya.

National Council of Teachers of Mathematics. (2000). Principles and standards for school mathematics. The National Council of Teachers of Mathematics, Inc.

Noer, S. H. (2010). Peningkatan kemampuan berpikir kritis, kreatif, dan reflektif (K2R) matematis siswa SMP melalui pembelajaran berbasis masalah [Improving students mathematical critical, creative, and reflective thinking (K2R) skills through problem-based learning] [Unpublished doctoral dissertation]. Universitas Pendidikan Indonesia.

Nortvedt, G. A. (2011). Coping strategies applied to comprehend multistep arithmetic word problems by students with above-average numeracy skills and below-average reading skills. Journal of Mathematical Behavior, 30(3), 255–269. https://doi.org/10.1016/j.jmathb.2011.04.003 

Nurhayanti, H., Riyadi, & Usodo, B. (2020). Analysis of mathematical problem-solving skills viewed from initial ability and gender differences in an elementary school. Elementary Education Online, 19(3), 1127–1141. https://doi.org/10.17051/ilkonline.2020.716848

Özreçberoğlu, N., & Çağanağa, Ç. K. (2018). Making it count: strategies for improving problem-solving skills in mathematics for students and teachers’ classroom management. Eurasia Journal of Mathematics, Science and Technology Education, 14(4), 1253–1261. https://doi.org/10.29333/ejmste/82536  

Özsoy, G., Kuruyer, H. G., & Çakiroğlu, A. (2015). Evaluation of students’ mathematical problem solving skills in relation to their reading levels. International Electronic Journal of Elementary Education, 8(1), 113–132.

Peranginangin, S. A., Saragih, S., & Siagian, P. (2019). Development of learning materials through PBL with Karo culture context to improve students problem solving ability and self-efficacy. International Electronic Journal of Mathematics Education, 14(2), 265–274. https://doi.org/10.29333/iejme/5713

Raharjo, M., & Waluyawati, A. (2011). Pembelajaran soal cerita operasi hitung campuran di sekolah dasar [Learning of mixed counting operation word problems in elementary school]. Indonesian Ministry of National Education.

Rahman, M. (2019). 21st century skill “problem solving”: defining the concept. Asian Journal of Interdisciplinary Research, 2(1), 64-74. https://doi.org/10.34256/ajir1917

Saputri, I., Susanti, E., & Aisyah, N. (2017). Kemampuan penalaran matematis siswa menggunakan pendekatan metaphorical thinking pada materi perbandingan kelas VIII di SMPN 1 Indralaya Utara [Students mathematical reasoning ability using metaphorical thinking approach to comparison material at the eig. Element Journal/ Jurnal Elemen, 3(1), 15–24. https://doi.org/10.29408/jel.v3i1.302

Sari, N. M., Pasundan, U., & Yaniawati, P. (2019). The effect of different ways in presenting teaching materials on students mathematical problem solving abilities. International Journal of Instruction, 12(4), 495–512. https://doi.org/10.29333/iji.2019.12432a

Schoenfeld, A. H. (2014). Mathematical problem solving. Elsevier Inc.

Schumacher, R. F., & Fuchs, L. S. (2013). Does understanding relational terminology mediate effects of intervention on compare word problems? Journal of Experimental Child Psychology, 111(4), 607–628. https://doi.org/10.1016/j.jecp.2011.12.001

Suarsana, I. M., Lestari, I. A. P. D., & Mertasari, N. M. S. (2019). The effect of online problem posing on students problem-solving abilitiy in mathematics. International Journal of Instruction, 12(1), 809–820. https://doi.org/10.29333/iji.2019.12152a

Suyono, & Hariyanto. (2015). Implementasi belajar & pembelajaran [Implementation of learning & teaching]. Remaja Rosdakarya.

Thevenot, C., & Barrouillet, P. (2014). Arithmetic word problem solving and mental representations. In R. C. Kadosh, & A. Dowker (Eds.), The Oxford handbook of numerical cognition (pp. 158–179). Oxford University Press.

Ulu, M. (2017). Errors made by elementary fourth grade students when modelling word problems and the elimination of those errors through scaffolding. International Electronic Journal of Elementary Education, 9(3), 553–580.

Verschaffel, L., Greer, B., & De Corte, E. (2007). Whole number concepts and operations. In F. Lester (Ed.), Second handbook of research on mathematics teaching and learning (pp. 557-628). Information Age Publishing Inc.

Vilenius-Tuohimaa, P. M., Aunola, K., & Nurmi, J. E. (2008). The association between mathematical word problems and reading comprehension. Educational Psychology: An International Journal of Experimental Educational Psychology, 28(4), 409–426. https://doi.org/10.1080/01443410701708228

Vula, E., Avdyli, R., Berisha, V., Saqipi, B., & Elezi, S. (2017). The impact of metacognitive strategies and self-regulating processes of solving math word problems. International Electronic Journal of Elementary Education, 10(1), 49–59. https://doi.org/10.26822/iejee.2017131886  

Wahyuningtyas, D. (2013). Peningkatan hasil belajar matematika pada siswa kelas III SDN 01 Alastuwo pokok bahasan penjumlahan dan pengurangan bentuk soal cerita melalui metode Polya tahun pelajaran 2012/2013 [Improving mathematics learning outcomes in grade III students of SDN 01 Alastuwo main subjects addition and subtraction of story problems through the Polya method in the academic year of 2012/2013] [Unpublished undergraduate’s thesis]. Universitas Muhammadiyah Surakarta.

Wardhani, S., Purnomo, S. S., & Wahyuningsih, E. (2010). Pembelajaran kemampuan pemecahan masalah di SD [Learning problem solving skills in elementary schools]. Pusat Pengembangan dan Pemberdayaan Pendidik dan Tenaga Kependidikan [Development and Empowerment of Mathematics Educators and Education Personnel Center].

Yılmaz-Özcan, N., & Tabak, S. (2019). The effect of argumentation-based social studies teaching on academic achievement , attitude and critical thinking tendencies of students. International Electronic Journal of Elementary Education, 12(2), 213–222. https://doi.org/10.26822/iejee.2019257669