Arifani, H., Wardono, W. and Cahyono, A. (2021) “Mathematics Literacy Skill Based on Self-directed Learning on Meaningful Instructional Design Based Outdoor Learning”, Unnes Journal of Mathematics Education Research, 10(A), pp. 26-31. Available at: https://journal.unnes.ac.id/sju/ujmer/article/view/34281 (Accessed: 22November2024).