Access Point #: MAFS.1.G.1.AP.3a (Archived Access Point)


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Partition circles and rectangles into two and four equal parts.

Clarifications:

Essential Understandings

Concrete:

  • Given a rectangle, fold or cut the shape into two equal parts, in various ways (Ex: horizontally, vertically, diagonally).
  • Given a circle, fold or cut the shape into two equal parts.
  • Given a rectangle, fold or cut the shape into four equal parts, in various ways (Ex: horizontally, vertically, and diagonally).
  • Given a circle, fold or cut the shape into four equal parts.
Representation:
  • Select visual representations of circles that have been partitioned into two or four equal parts.
  • Select visual representations of rectangles that have been partitioned in various ways (Ex: horizontally, vertically, diagonally) into two or four equal parts.
  • Given a visual representation of a rectangle, partition the shape into two equal parts, in various ways (Ex: horizontally, vertically, diagonally).
  • Given a visual representation of a circle, partition the shape into two equal parts.
  • Given a visual representation of a rectangle, partition the shape into four equal parts, in various ways (Ex: horizontally, vertically, diagonally).
  • Given a visual representation of a circle, partition the shape into four equal parts.
  • Understand the following concepts and vocabulary of horizontal, vertical, diagonal, whole, equal parts, circle, rectangle, partition.

Number: MAFS.1.G.1.AP.3a Category: Access Points
Date Adopted or Revised: 06/14 Cluster: Reason with shapes and their attributes. (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.1.G.1.3: Partition circles and rectangles into two and four equal shares, describe the shares using the words halves, fourths, and quarters, and use the phrases half of, fourth of, and quarter of. Describe the whole as two of, or four of the shares. Understand for these examples that decomposing into more equal shares creates smaller shares.



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