El-Sayed, N. S. M., Ismail, M. R., Abdellatief, O. G. A., Noshey, S. M. (2024). 'The effectiveness of a proposed unit in science based on social constructivist theory in developing systems thinking habits among students of the first cycle of basic education', Egyptian Journal of Science Education, 27(1), pp. 211-246. doi: 10.21608/mktm.2024.339666