This literature review investigates formative assessment practices among teachers, outlining a conceptual model known as the 'formative assessment cycle' (fa-cycle) that includes five phases from clarifying expectations to taking follow-up actions. The study analyzes 106 peer-reviewed publications to explore effective teacher practices and their impact on student learning, highlighting trends, challenges, and areas requiring more research, particularly phase 5 of the cycle. Preliminary findings suggest that successful formative assessment relies on active student involvement, ongoing communication, and the need for teachers to possess both subject matter and pedagogical content knowledge.