“Designing a Math Picture Book to Stimulate Primary School Students’ Understanding of Properties of 2-D Shapes”. JOURNAL OF TEACHING AND LEARNING IN ELEMENTARY EDUCATION (JTLEE) 4, no. 2 (August 17, 2021): 164–179. Accessed September 15, 2025. https://jtlee.ejournal.unri.ac.id/index.php/JTLEE/article/view/161.