Decades of research have converged on a clear picture of what students need to build lasting mathematical proficiency — but translating that evidence into coherent, school-wide action is where many systems fall short. In this guest post, Jillian Mendoza, Director of Math at PowerMyLearning, introduces the Foundations of Numeracy framework: a research-backed map for making smarter decisions about curriculum, intervention, and instructional coherence. Whether you're a principal, instructional coach, or district leader, this framework gives you a shared language for evaluating every math decision — not just a slice of it, but the whole picture.