Use models to compose and decompose numbers up to 120 in more than one way (hundreds, tens, ones).
For Grade 1, this standard focuses on Compose/decompose to 120 and prepares learners for increasingly complex tasks.
TEKS 1.2B bridges prior learning and next steps in Mathematics, keeping Compose/decompose to 120 coherent across the year.
Use short exit tickets and tasks where students explain decisions, show multiple representations, or justify answers—directly aligned to 1.2B.
It lays groundwork for the next grade by deepening accuracy and flexibility with Compose/decompose to 120, so students can tackle more complex problems later.
Students may rely on procedures without reasoning or mix key terms. Build in quick oral explanations, error analysis, and vocabulary supports tied to 1.2B.
Standard 1.2B describes the essential skills and understandings for Compose/decompose to 120 in Grade 1. It clarifies the learning outcomes and what successful work looks like.
