Area of Composite Figures
Lesson Prep
Lesson Details
Duration: 50 minutes
Learning Goal: Introduce composite figures with an estimation challenge and develop understanding of how to calculate the area of regular polygons.
Prework
Consider joining our free online workshop to explore 3 Act Math more in depth
If possible, use big whiteboards and have each group member write with different colors
Write pre-scripted questions for audience members to ask during presentations
Classwork
3 Act Math - Mowing the Lawn (Kyle Pearce)
Finished Early?
Circle Recap & Right Triangle Refresh
Some items taken from Michael Pershan
Standards
Common Core
6.G.A.1 – Find the area of right triangles, other triangles, special quadrilaterals, and polygons by composing into rectangles or decomposing into triangles and other shapes; apply these techniques in the context of solving real-world and mathematical problems.
TEKS
G.11(A) – apply the formula for the area of regular polygons to solve problems using appropriate units of measure
G.11(B) – determine the area of composite two-dimensional figures comprised of a combination of triangles, parallelograms, trapezoids, kites, regular polygons, or sectors of circles to solve problems using appropriate units of measure