Digital SAT Math
Lesson Plan
Area and perimeter of common 2D shapes and composite figures
Goals / Objectives
Apply area formulas for rectangles (A=lw), triangles (A=1/2bh), parallelograms (A=bh), trapezoids (A=1/2(b1+b2)h), and circles (A=pir^2)
Decompose composite figures into non-overlapping simpler shapes and sum their areas
Find the area of shaded regions by subtracting the area of an inner shape from an outer shape
Calculate the perimeter of polygons and composite figures, counting only the outer boundary — including edges exposed by a cut-out and curved edges from C = 2πr
Calculate the area of polygons on the coordinate plane
Solve applied problems in which a real-world object is modelled by these figures
Standards
"Solve real-world and mathematical problems about the: • area or perimeter of a geometric figure or an object that can be modeled by a geometric figure using given information." "Demonstrate procedural fluency by selecting the correct: • area formula and correctly calculating a specified value."
Academic Vocabulary
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Materials
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Remediation
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Enrichment
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Accommodations
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Anticipatory Set / Bell Work
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Modeling
Check for Understanding
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Guided Practice
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Homework
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