First-year teachers often experience tensions between their visions of high-quality and equitable mathematics instruction and the realities of school culture and politics. Subsequently, first-year teachers need a professional learning space where they can be supported in enacting their instructional visions while developing their professional voices. In this paper, we share the voices of four first-year teachers and how a community of practice supported them to navigate the individual challenges of their classroom practices. Findings from this study yielded two major themes: 1) the community of practice supported them to reflect, envision, and articulate alternative realities; and 2) instructional visions were filters that empowered them to strengthen their professional voices while developing as equitable mathematics teachers.