Solve problems related to perimeter and area of rectangles with whole‑number dimensions.
The intent of 4.5D is to move students from guided examples to independent work with Solve perimeter & area problems.
With 4.5D, Grade 4 students practice Solve perimeter & area problems in multiple representations and contexts.
Students may rely on procedures without reasoning or mix key terms. Build in quick oral explanations, error analysis, and vocabulary supports tied to 4.5D.
Start with concrete or familiar examples, connect to prior knowledge, model a clear process, and provide checks for understanding aligned to 4.5D.
Standard 4.5D describes the essential skills and understandings for Solve perimeter & area problems in Grade 4. It clarifies the learning outcomes and what successful work looks like.
It lays groundwork for the next grade by deepening accuracy and flexibility with Solve perimeter & area problems, so students can tackle more complex problems later.
