Investigation of Turkish mathematics teachers' proficiency perceptions in using information and communication technologies in teaching. - Osman Birgin; Kübra Uzun Yazici; Sacide Güzin Mazman Akar (Educ. Inf. Technol., 2020)

The effect of GeoGebra software-supported mathematics instruction on eighth-grade students' conceptual understanding and retention. - Osman Birgin; Kübra Uzun Yazici (J. Comput. Assist. Learn., 2021)