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In this drawing triangles instructional activity, 5th graders follow directions to draw triangles using specific angle and line segment measurements. They work with both centimeters and inches. They classify each triangle by its angles and sides.
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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
Polygons-Changing Area Versus Changing Perimeter
Investigate the area and perimeter of polygons in this geometry instructional activity. Young geometers use grid paper to draw a quadrilateral and calculate its area and perimeter. They also read The Greedy Triangle to identify the...
5th - 8th Math CCSS: Designed