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주요 내용

STANDARDS

Math

Common Core Math

Grade 2: Geometry

2.G.A

Reason with shapes and their attributes.

2.G.A.1

Partially covered
Recognize and draw shapes having specified attributes, such as a given number of angles or a given number of equal faces. Identify triangles, quadrilaterals, pentagons, hexagons, and cubes.

2.G.A.2

Fully covered
Partition a rectangle into rows and columns of same-size squares and count to find the total number of them.

2.G.A.3

Mostly covered
Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape.