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Use Crayola Dry Erase Crayons to draw and compare polygons with a partner. What is similar? What is different?
A polygon is a closed, two-dimensional, geometric figure with at least three straight sides and angles. Triangles, rectangles, and squares are examples of some familiar polygons. Focusing on the attributes of polygons helps to name them. For example, a five-sided polygon is called a pentagon. Regular polygons have sides and angles that are all the same length. Irregular polygons have sides and angles of differing lengths.
Share the definition and examples of polygons with students. Be sure to include examples of regular and irregular polygons. Provide vocabulary for describing the attributes of a polygon (side, angle, vertex, vertices, length of sides, number of sides).
Arrange students in pairs, sitting back-to-back with their dry-erase boards and dry-erase crayons.
Ask each child to draw one polygon on his or her dry-erase board and color it in with a bold dry-erase crayon color.
Partners can now compare their polygons. Ask students to write their ideas either directly on their dry-erase boards or using Crayola Colored Pencils in a math journal or on lined paper. Provide sentence starters:
Our shapes/polygons are similar because...
Our shapes/polygons are different because...
Repeat this learning activity several times, erasing shapes or using the same shapes but comparing them with different partners.
At the end of the lesson invite children to reflect on their learning in a math journal or on lined paper. Provide a reflection prompt, such as “Tell about today’s shape activity.”
Find all of the different shapes that can be made by arranging Crayola Dry-Erase Crayons end to end on an individual dry
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