List of Articles Klein Model Open Access Article Abstract Page Full-Text 1 - Evaluation of Architectural Engineering Curriculum to Promote Vocational Education Based on Klein Model Majid Yazdani Alireza Rezvani Mohsen vafamehr mohamad hassan khademzade 10.30495/ccd.2022.689602 Open Access Article Abstract Page Full-Text 2 - Validation of play-based preschool education curriculum based on Francis Klein's model. Vadood Shoshtari Gogtapeh mohammad ali mojallal chobglo Jahangir Yari haj atalo Zarin Dneshvar Haris