3.MATH.6.D
Decompose composite figures formed by rectangles into non-overlapping rectangles to determine the area of the original figure using the additive property of area.
Grade 3 · Texas Essential Knowledge and Skills (TEKS) · TEKS 2012
Standard Unwrapping
AI-generated as a starting point — sign in to edit.Vocabulary
composite figuresrectanglesnon-overlapping rectanglesareaoriginal figureadditive property of area
Skills
- decompose (composite figures formed by rectangles into non-overlapping rectangles) #dok2
- determine (the area of the original figure using the additive property of area) #dok2
- apply (the additive property of area to find total area) #dok2
- explain (how decomposing figures helps determine total area) #dok3
Learning Targets
- I can decompose a composite figure made of rectangles into smaller, non-overlapping rectangles. #dok2
- I can determine the area of a composite figure by finding the area of each non-overlapping rectangle. #dok2
- I can apply the additive property of area to calculate the total area of the original figure. #dok2
- I can explain how breaking a composite rectangle into smaller rectangles helps find its total area. #dok3
Big Ideas
- Composite figures can be broken down into smaller rectangles to make finding area easier.
- The additive property of area allows us to find the area of a composite figure by adding the areas of its non-overlapping parts.
Essential Questions
- How can we break a composite figure made of rectangles into simpler parts?
- Why does finding the area of smaller rectangles help us find the area of the whole figure?
- What does the additive property of area mean?
- How do we make sure the rectangles we create do not overlap?
- Can you explain your strategy for finding the total area of a composite figure?