Decompose Shapes to Compare Areas
Videos to help Grade 3 students learn how to decompose and recompose shapes to compare areas.
Common Core Standards: 3.MD.5,
Plans and Worksheets for Grade 3
Plans and Worksheets for all Grades
Lessons for Grade 3
Common Core For Grade 3
New York State Common Core Math Module 4, Grade 3, Lesson 2
Wilma and Freddie use patterns blocks to make shapes as shown. Freddie says his shape is bigger than Wilma’s because it’s longer than hers. Is he right? Explain your answer.
Note: This problem reviews Grade 3–M4–Lesson 1, specifically that even though shapes look different, they can have the same area.
Rearrange 12 square tiles to make different rectangles.
Lesson 2 Homework
1. Each □ is a square unit. Count to find the area of each rectangle. Then circle all the rectangles
with an area of 12 square units.
2. Colin uses square inch pieces to create these rectangles. Do they have the same area? Explain.
3. Each □ is a square unit. Count to find the area of the rectangle below. Then draw a different
rectangle that has the same area.
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