Instructional Video
Khan Academy

Khan Academy: Decomposing Shapes to Find Area: Grids

3rd Standards
Lindsay finds the area of an irregular shape by decomposing it into 2 rectangles.
Instructional Video
Khan Academy

Khan Academy: Decomposing Shapes to Find Area: Grids

2nd - 3rd Standards
Demonstrates how to break an irregular shape into its parts, find the individual areas, and then add them together. [2:51]