OREGON MATH STANDARDS (2021): [3.GM]

2021 Oregon Math Guidance: 3.GM.A.2

 ODE and Oregon Math Project Logo

Cluster: 3.GM.A - Reason with shapes and their attributes.

STANDARD: 3.GM.A.2

 Standards Statement (2021):

Partition shapes into parts with equal areas and express the area of each part as a unit fraction of the whole.

  Connections:

Preceding Pathway Content (2021)

Subsequent Pathway Content (2021)

Cross Domain Connections (2021)

Common Core (CCSS)

(2010)

2.GM.A.3

3.GM.C.5

3.NF.A.1

3.G.A.2

3.GM.A Crosswalk

 Standards Guidance:

Progressions

  • Students [continue to] develop competence in the composition and decompostion of rectangular regions, that is spatially structuring rectangular arrays. They learn to partition a rectangle into identical squares by anticipating the final structure and thus forming the array by drawing rows and columns. (Please reference page 13 in the Progression document).

Examples