This session is based on the learning progressions focusing on number sense and number relationships from kindergarten to second grade. Participants will engage in developing a deeper understanding of this foundational content, how to build fluency from conceptual understanding within these standards, and how to make instructional decisions responsive to the needs of each student. TESS: 1a, 1b, 1c, 1d, 1e, 3a, 3c, 3d, 3e, 4e