Santosa, T. A., Siagian, G., Festiyed, F., Razak, A., Zulyusri, Z., Diliarosta, S. and Yerimadesi, Y. (2023) “Development of Higher Order Thinking Skill Instruments in Biology Learning on Ecology and Environment Materials”, Edumaspul: Jurnal Pendidikan, 7(1). doi: 10.33487/edumaspul.v7i1.5855.