Lesson plan

Compose 2D shapes by their given attributes

teaches Common Core State Standards CCSS.Math.Content.2.G.A.1 http://corestandards.org/Math/Content/2/G/A/1
teaches Common Core State Standards CCSS.Math.Practice.MP2 http://corestandards.org/Math/Practice/MP2
teaches Common Core State Standards CCSS.Math.Practice.MP3 http://corestandards.org/Math/Practice/MP3

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Big Ideas: Geometric attributes (such as sides and angles) give descriptive information about a shape’s properties and orientation, which supports visualization and problem solving. In this lesson, students will learn to compose 2-dimensional shapes by their geometric attributes and name. Students recognize that shapes can be created using other shapes that are placed together. This lesson builds on students' prior knowledge of definite geometric attributes, such as the type of lines, number of angles, angle size, and the number of sides to recognize shapes, as well as their knowledge of geometric classifications. In this task, students use pattern blocks to compose shapes. Students recognize there is not just one way to compose a shape, but various combinations. This lesson sets the foundation for decomposing shapes as well as understanding how 3-dimensional shapes are composed of 2-dimensional shapes. Vocabulary: polygon, triangle, quadrilateral, trapezoid, parallelogram, square, rectangle, rhombus, pentagon, hexagon, irregular shape, line, side, angle, right angle, straight, compose Special Materials: Pattern blocks Copy of pattern blocks (optional)