References
- Kang, H., Jung, H-J., Sim, H., Han, S., Won, M., Kim, H., Jo, T., & Park, J. (2012). Research on Korean language education vocabulary content development(stage 1). National Institute of Korean Language.
- Kang, H., Jung, H-J., Sim, H., Han, S., Won, M., Kim, H., & Park, J. (2013). Research on Korean language education vocabulary content development(stage 2). National Institute of Korean Language.
- Kang, H., Jung, H-J., Sim, H., Han, S., Won, M., Kim, H., & Gu, J. (2014). Research on Korean language education vocabulary content development(stage 3). National Institute of Korean Language.
- Ministry of Education (2015a). Confirmation and announcement of the 2015 revised curriculum general and specific topics. Ministry of Education press release, 2015.9.23.
- Ministry of Education (2015b). Mathematics 1-1. Chunjae Education INC.
- Ministry of Education (2015c). Mathematics 1-2. Chunjae Education INC.
- Ministry of Education (2015d). Mathematics 2-1. Chunjae Education INC.
- Ministry of Education (2015e). Mathematics 2-2. Chunjae Education INC.
- Ministry of Education (2018a). Mathematics 1-1. Chunjae Education INC.
- Ministry of Education (2018b). Mathematics 1-2. Chunjae Education INC.
- Ministry of Education (2018c). Mathematics 2-1. Chunjae Education INC.
- Ministry of Education (2018d). Mathematics 2-2. Chunjae Education INC.
- Kwon, M. (2019). Analysis of the adequacy of vocabulary in elementary mathematics textbooks for grader 1~2 aligned to the 2009 and 2015 revised curriculum. School Mathematics, 21(2), 459-481.
- Kwon, Y. M., & Ahn, B. G. (2005). The analysis on students' understanding of mathematics terms being used in elementary school mathematics textbooks: Centering on the field of geometry. Journal of elementary mathematics education in Korea, 9(2), 137-159.
- Kwon, J. R. (2016). A study to analyze the adequacy of elementary school mathematics textbooks: Based on the unit structure and vocabulary. The Mathematical Education, 55(3), 281-297. https://doi.org/10.7468/mathedu.2016.55.3.281
- Kim, G. H. (2008). Vocabulary for Korean language education according to level. PIJBOOK.
- Kim, Y. (2001). EBS Your Literacy: The power to develop basic study skills. Korea Educational Broadcasting System(EBS).
- Kim, H. (2010). Research of the vocabulary of textbooks for selecting vocabulary of Korean education: Analysis on elementary school textbooks. The Journal of Korean Language and Literature Education, 47, 63-90.
- Do, J., & Chang, H. (2022). An analysis of Korean language learners' understanding according to the types of terms in school mathematics. Communications of Mathematical Education, 36(3), 335-353. https://doi.org/10.7468/JKSMEE.2022.36.3.335
- Park, K. S. (2001). A study on mathematical terms in 7th elementary mathematics curriculum in Korea. School Mathematics, 3(2), 233-248.
- Park, K. S. (2013). A study on vocabularies related to four fundamental rules of arithmetic used in elementary school mathematics. Journal of Elementary Mathematics Education in Korea, 17(2), 185-205.
- Park, K. S., & Kwon, S. (2012). A study on compositions of listed terms in 2011 elementary mathematics curriculum in Korea. Journal of Educational Research in Mathematics, 22(3), 429-444.
- Park, K. S., & Yim, J. (2005). A critical examination of undefined mathematical terms used in elementary school mathematics textbooks of Korea. Journal of Educational Research in Mathematics, 15(2), 197-213.
- Park, M., & Lee, E. J. (2022). An Analysis of vocabulary rating and types in elementary mathematics textbooks for grade 1-2. Education of Primary School Mathematics, 25(4), 361-375. https://doi.org/10.7468/JKSMEC.2022.25.4.361
- Pang, J-S., & Kwon, M. (2016). Analysis of the adequacy of vocabulary in elementary mathematics textbooks and workbooks for grades 3~4. School Mathematics, 18(4), 903-922.
- Bong, M-K., Kim, H., & Kim, S. (2022). Development of vocabulary for elementary education based on textbook analysis. The Academy for Korean Language Education, 132, 343-368.
- Seo, D-Y., Kwon, S., & Lee, J-Y. (2019). A study on the improvement of words in elementary mathematics textbook. Korea Foundation for the Advancement of Science and Creativity BD-1907-0002.
- Shin, M. (2004). A study on Korean academic vocabulary education [Seoul National University Doctoral dissertation].
- Shin, M., Cha, K., & Yi, K. (2020). A study on the relationship between Korean academic vocabulary ability and textbook reading ability. Korean language education research, 55(4), 79-119. https://doi.org/10.20880/KLER.2020.55.4.79
- Yang, J-S., Jung, E., Lee, M. H., Park, M., Park, J-H., Lee, E-J., & Choi, I. (2021). A study on implementable measures to improve the 1st and 2nd grade elementary students' vocabulary comprehension in Korean and math textbooks. Korea Institute for Curriculum and Evaluation research report RRI 2021-6.
- Yi, K. (2015). A study of the vocabulary of elementary School textbooks for selecting vocabulary of education. Journal of Learner-Centered Curriculum and Instruction, 15(6), 669-689.
- Lee, E. B., Kim, S. R., & Lee, I. S. (1982). An investigation of elementary school children's vocabulary power. Korean Language Education, 42, 235-242.
- Chang, H. J., Jeon, H. S., Shin, M., & Kim, H. J. (2014). Study on selection of basic vocabulary for elementary school students: Focused on basic vocabulary in the lower grades. Journal of Speech-Language & Hearing Disorders, 23(1), 157-170. https://doi.org/10.15724/jslhd.2014.23.1.008
- Chang, H., & Lim, M. (2016). An analysis on suitability of words and sentences in mathematics textbooks for elementary first grade. The journal of educational research in mathematics, 26(2), 247-267.
- Jeong, E. S. (2005). Mathematics as a communication in elementary school mathematics textbooks. School Mathematics, 14(3), 377-394.
- Cho, S-I., & Kim, J-K. (2023). The effects of using both defining and context clue strategies on academic vocabulary learning of elementary school students with learning disabilities. The Journal of Special Children Education, 25(3), 25-46. https://doi.org/10.21075/KACSN.2023.25.3.25
- Cho, H-B., Jang, C-D., & Kim, K-Y. (2008). An influence on the vocabulary power in subject studying. Gaesin Language and Literature Research, 28, 31-57.
- Han, S., Jung, H-J., Sim, H., Won, M., Kim, H., Hwang, Y., & Gu, J. (2015). Research on Korean language education vocabulary content development(stage 4). National Institute of Korean Language.
- Hitotsumatsu, S., Okada., Y., Akai, T., Ikeda, T., Kurosawa, S., & Tanakd, H. et al. (2020). Mathematics for elementary school 4th Grade Volume 1. Gakko Tosho.
- Nation, I. S. P. (1990). Teaching and learning vocabulary. Heinle & Heinle Publishers.
- YTN (2023). 초등학생 난독증.경계선 지능 급증 코로나19 여파. https://www.ytn.co.kr/_ln/0103_202310221616376012
- YTN (2023). The aftermath of COVID-19, a surge in dyslexia and borderline intelligence among elementary school students. https://www.ytn.co.kr/_ln/0103_202310221616376012