شطيطح م., طالبي م. ا., حازي م., & بوضياف م. (2021). The use of experimental approach and the semiotic mediation, To process mathematical Situations in a digital environment. (The composite of two central symmetries as an example): تاريخ الاستلام: 13/02/2020 تاريخ القبول: 27/10/2020. Human Resources Development Research, 16(04), 690–712. Retrieved from https://rdrh.univ-setif2.dz/index.php/rdrh/article/view/418