M.1.21: Compose two-dimensional shapes (rectangles, squares, trapezoids…
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.
The West Virginia College- and Career-Readiness Standards for Mathematics (2024) outcome M.1.21 for Grade 1 says: “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.” These printable Fieldbook pages practise it, each with a full answer key. Official wording: West Virginia College- and Career-Readiness Standards for Mathematics (2024).
Printable practice for M.1.21
- Grade 3 Common Core Math: Geometry and Measurement printable pack
1 practice page, 1 assessment, with answer keys. Free sample.
Compared with Common Core: 1.G.A.2.
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