Use models to determine formulas for perimeter of rectangles/squares and area of rectangles.
For Grade 4, this standard focuses on Perimeter/area formulas and prepares learners for increasingly complex tasks.
In Mathematics, 4.5C defines what success looks like for Perimeter/area formulas—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 4.5C.
It lays groundwork for the next grade by deepening accuracy and flexibility with Perimeter/area formulas, 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 4.5C.
Standard 4.5C describes the essential skills and understandings for Perimeter/area formulas in Grade 4. It clarifies the learning outcomes and what successful work looks like.
