Decompose 2D shapes (e.g., cut square from rectangle; partition into identical triangles) and identify parts.
With 2.8E, Grade 2 students practice Decompose shapes in multiple representations and contexts.
In Mathematics, 2.8E defines what success looks like for Decompose shapes—from core skills to real‑world use.
Use short exit tickets and tasks where students explain decisions, show multiple representations, or justify answers—directly aligned to 2.8E.
It lays groundwork for the next grade by deepening accuracy and flexibility with Decompose shapes, 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 2.8E.
Standard 2.8E describes the essential skills and understandings for Decompose shapes in Grade 2. It clarifies the learning outcomes and what successful work looks like.
