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Fourth graders identify and describe lines, shapes, and solids using formal geometric language. They use Inspiration to create a graphic organizer and outline of polygons.
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Area and Perimeter of Regular and Irregular Polygons
Extend young mathematicians' understanding of area with a geometry lesson on trapezoids. Building on their prior knowledge of rectangles and triangles, students learn how to calculate the area of trapezoids and other irregular...
3rd - 6th Math CCSS: Adaptable
Find the Perimeter of a Polygon with More Than 4 Sides
Perimeter moves beyond squares and rectangles in a lesson on irregular-shaped polygons. The lesson focuses on the strategy of counting and then adding side lengths. Several examples are slowly walked through, giving learners plenty of...
5 mins 2nd - 4th Math CCSS: Designed