Reason with shapes and their attributes
2.G.A.1 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.
Sample Activities:
My Shape Riddle

Geoboard Quadrilaterals
Tangram Shapes
Skeletal Models
Math Read Aloud Task Card:
The Greedy Triangle
Also included in 2nd Grade Math Centers:

Constructing 2-Dimensional Shapes
Describing 3-Dimensional Shapes
Comparing 3-Dimensional Shapes

Geoboard Triangles
Flip, Slide, Turn

Nets for a Cube

2.G.A.2 Partition a rectangle into rows and columns of same-size squares and count to find the total number of them.

Sample Activity:
Cover a Rectangle 
Also included in 2nd Grade Math Centers:
Complete the Rectangle

2.G.A.3 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.

Sample Activities:
Geoboard Halves 
Fraction Barrier Game
Also included in 2nd Grade Math Centers:
Geoboard Fourths 
Mr. Zed's Cakes

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