Standards Map

Mathematics > Grade 1 > Geometry
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Mathematics | Grade : 1

Domain - Geometry

Cluster - Reason with shapes and their attributes.

[1.G.A.2] - Compose two-dimensional shapes (rectangles, squares, trapezoids, triangles, half-circles, and quarter-circles) or three-dimensional shapes (cubes, right rectangular prisms, right circular cones, and right circular cylinders) to create a composite shape, and compose new shapes from the composite shape. [Note: Students do not need to learn formal names such as "right rectangular prism"]

Resources:


  • Compose shapes
    Join geometric shapes without overlaps to form new shapes.

Predecessor Standards:

  • K.G.B.6
    Compose simple shapes to form larger shapes. For example, "Can you join these two triangles with full sides touching to make a rectangle?"

Successor Standards:

  • 3.MD.C.5
    Recognize area as an attribute of plane figures and understand concepts of area measurement.
  • 4.G.A.3
    Recognize a line of symmetry for a two-dimensional figure as a line across the figure such that the figure can be folded along the line into matching parts. Identify line-symmetric figures and draw lines of symmetry.

Same Level Standards:

  • 1.G.A.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.