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Leikin, R and Elgrably, H. (2020). Problem posing through investigations for the development and evaluation of proof-related skills and creativity skills of prospective high school mathematics teachers. International Journal of Educational Research. 10.1016/j.ijer.2019.04.002

Elgrably, H., Leikin, R. Creativity as a function of problem-solving expertise: posing new problems through investigations. ZDM Mathematics Education 53, 891–904 (2021). https://doi.org/10.1007/s11858-021-01228-3

Leikin, R., Elgrably, H. Strategy creativity and outcome creativity when solving open tasks: focusing on problem posing through investigations. ZDM Mathematics Education (2022). https://doi.org/10.1007/s11858-021-01319-1

Leikin, R., & Elgrably, H. (2023). Structuring Complexity of Mathematical Problems: Drawing Connections Between Stepped Tasks and Problem Posing Through Investigations. In Mathematical Challenges For All (pp. 521-538). Cham: Springer International Publishing.‏