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The Greedy Triangle by Marilyn Burns

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Theme:	Classifying Polygons
Grades:	3 - 5
Subject:	Math
Duration:	45 minutes
Standards & Goals:	Florida State Standards The student understands the different ways numbers are represented and used in the real world. (MA.A.1.2) The student describes, draws, identifies and analyzes two and three dimensional shapes. (MA.C.1.2) The student uses the reading process effectively. (LA.A.1.2) The student uses listening strategies effectively. (LA.C.1.2) The student uses writing processes effectively. (LA.B.1.2)
Objectives:	Given five diagrams of polygons, each student will correctly name each polygon by classifying them according to the number of sides and the number of angles with 80 percent accuracy Given pattern blocks and teacher modeling, each student will correctly name the four quadrilaterals by their more commonly used names (square, parallelogram, rhombus, or trapezoid) Given six pattern blocks, each student will trace on a math journal page at the end of the lesson two pattern blocks that show quadrilateral shapes and explain in words what they learned about shapes and how each shape is evident in the world around us.

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LACP Bronze Award Winner Winner of a Bronze Spotlight Award from the League of American Communications Professionals

The Greedy Triangle by Marilyn Burns

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