Decompose composite figures formed by rectangles to determine total area using the additive property of area.
TEKS 3.6D provides a clear foundation for continued study of Area of composite rectangles in future grades.
The intent of 3.6D is to move students from guided examples to independent work with Area of composite rectangles.
Start with concrete or familiar examples, connect to prior knowledge, model a clear process, and provide checks for understanding aligned to 3.6D.
Standard 3.6D describes the essential skills and understandings for Area of composite rectangles in Grade 3. It clarifies the learning outcomes and what successful work looks like.
Use short exit tickets and tasks where students explain decisions, show multiple representations, or justify answers—directly aligned to 3.6D.
Students may rely on procedures without reasoning or mix key terms. Build in quick oral explanations, error analysis, and vocabulary supports tied to 3.6D.
