Lesson 01
Area of Rectangles — Part 1
Derive area from equal-size unit squares and calculate rectangle area with proper squared units.
Open lesson →Chapter 11: Area and Perimeter
5 lessons · 1 consolidation units · chapter review and exam
Internally reviewed instructional baseline. External educator/learner testing, human scoring of student constructions, and live-host verification remain pending.
Instructional lessons
Lesson 02
Area of Rectangles — Part 2
Determine missing dimensions of rectangles from area and solve applied area problems.
Open lesson →Lesson 03
Area of Composite Figures
Split and rearrange nonoverlapping rectangles to determine composite areas.
Open lesson →Lesson 04
Perimeter — Part 1
Find perimeters of rectangles and other polygons, including missing side lengths.
Open lesson →Lesson 05
Perimeter — Part 2
Find perimeter of composite rectilinear shapes using all outer boundaries.
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