1st Grade Math Centers




1ST GRADE 
GEOMETRY ACTIVITIES

ALIGNED WITH COMMON
CORE 
STATE STANDARDS

1ST GRADE GEOMETRY 

This page provides sample Geometry activities from our 1st Grade Math Centers eBook.  Try out the sample activities under each Common Core Standard or download the eBook and have all the Number, Geometry, Measurement and Data Centers you’ll need for the entire school year in one convenient digital file.

Teaching in a state that is implementing their own specific math standards?  Download our 1st Grade Correlations document for cross-referenced tables outlining the alignment of each state's standards with the CCSS-M, as well as the page numbers in our 1st Grade Math Centers eBook related to each standard.  

Teaching in Australia?   Also available for the Year One outcomes as written in the Australian Curriculum: Mathematics.

Reason with shapes and their attributes

1.G.A.1 Distinguish between defining attributes (e.g. triangles are closed and three-sided) versus non-defining attributes (e.g., color, orientation, overall size); build and draw shapes to possess defining attributes.
Possible Activities:
My 2D Shapes Book
Geoboard Squares
Literature Link: Mouse Shapes

Also included in 1st Grade Math Centers:
Comparing Shapes (ver. 1)
Comparing Shapes (ver. 2)

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.

Possible Activities:
Putting Shapes Together
Make a Triangle
Literature Link: Grandfather Tang's Story
Literature Link: Tangram Cat

Also included in 1st Grade Math Centers:
Make a Hexagon
Pattern Block Numbers
Tangram Triangles
Tangram Squares

Shape Patterns

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.

Possible Activity:
Equal Parts of a Square (ver. 1)
Also included in 1st Grade Math Centers:
Equal Parts of a Square (ver. 2)
Fraction Pictures
Color a Fraction

1.G.A.2 Make a Triangle
1.G.A.2 Tangram Cat



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