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2-GM-1-1

Page history last edited by Tashe Harris 6 years, 2 months ago

2.GM.1.1 Recognize trapezoids and hexagons.

In a Nutshell

In first grade, students could identify trapezoids and hexagons by pointing to the two-dimensional shape when given its name. Second grade students should be able to both identify and name trapezoids and hexagons. Third grade students will continue using geometric attributes to sort three-dimensional shapes.

Student Actions	Teacher Actions
Develop a deep and flexible conceptual understanding of the geometric attributes of trapezoids and hexagons by observing, comparing, and contrasting various two-dimensional shapes. Communicate mathematical ideas to one another as they compare two-dimensional shapes through examples, demonstrations, models, drawing, and logical arguments. Develop mathematical reasoning as they explore and explain why a two-dimensional shape is or is not a trapezoid or hexagon.	Implement mathematical tasks which allow students to discover properties of trapezoids and hexagons through the use of manipulatives, objects, etc. Facilitate meaningful mathematical discourse where ideas about the attributes of trapezoids and hexagons are freely shared, discussed and analyzed. Pose purposeful questions, asking “Why? How do you know? Will that always be true? Explain your brain.”
Key Understandings	Misconceptions
Trapezoids are 4-sided flat shapes with straight sides that have a pair of opposite parallel sides. A hexagon is any six sided polygon.	Any four-sided shape is a trapezoid. The sides of a hexagon must be the same length.