# Access Point #: MAFS.4.G.1.AP.2a (Archived Access Point)

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Identify and sort objects based on parallelism, perpendicularity, and angle type.

#### Essential Understandings

Concrete:

• Identify attributes within a two-dimensional figure (i.e., sides and angles).
• Sort manipulatives into categories:
• Parallel sides
• Perpendicular sides
• Types of angles
Representation:
• Identify parallel and perpendicular lines.
• Recognize and identify acute, obtuse, and right angles.
• Understand the following concepts and vocabulary: parallel, perpendicular, right angle, obtuse angle, and acute angle.

 Number: MAFS.4.G.1.AP.2a Category: Access Points Date Adopted or Revised: 06/14 Cluster: Draw and identify lines and angles, and classify shapes by properties of their lines and angles. (Additional Cluster) :  Clusters should not be sorted from Major to Supporting and then taught in that order. To do so would strip the coherence of the mathematical ideas and miss the opportunity to enhance the major work of the grade with the supporting clusters.

#### Related Standards

 Name Description MAFS.4.G.1.2: Classify two-dimensional figures based on the presence or absence of parallel or perpendicular lines, or the presence or absence of angles of a specified size. Recognize right triangles as a category, and identify right triangles.

#### Related Courses

 Name Description 5012060: Mathematics - Grade Four 7712050: Access Mathematics Grade 4 5020110: STEM Lab Grade 4 5012055: Grade 3 Accelerated Mathematics 5012015: Foundational Skills in Mathematics 3-5

#### Element Cards

 Name Description 4th Grade Math Element Cards: Element Cards are available to assist in planning for instruction. They are designed to promote understanding of how students move toward the academic standards. Element Cards contain one or more access points, essential understandings, suggested instructional strategies and suggested supports.

#### Teaching Idea

 Name Description Curriculum Resource Guide: Measurement and Geometry: Complete Unit