Laksmi, M. L., Sari, D. P., Rinanto, Y. and Sapartini, R. R. (2021) “Implementation of Problem Based Learning to Increase Scientific Explanation Skill in Biology Learning about the Environment”, Journal of Learning for Development , 8(3), pp. 532-540. Available at: https://jl4d.org/index.php/ejl4d/article/view/531 (Accessed: 3December2021).