Assess students’ ability to analyze and represent all possible partitions (number bonds) of each number from 1 to 10 using concrete objects, drawings, and addition equations. Tasks: list every two‑part decomposition for each target number, create physical or drawn models for selected decompositions, write matching equations, and explain how they verified completeness and avoided duplicates; extend to three‑part decompositions for selected numbers. Emphasize accuracy, completeness, and clear explanation of strategies; suitable for Pre‑K–Grade 2 with advanced analytical challenge.