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1st Grade Geometry

This page provides examples of 1st Grade Geometry Activities aligned with the Common Core State Standards. All activities are suitable for use in Math Centers, small group or whole class settings and are designed to elicit a range of responses and provide opportunities for students to communicate their reasoning and mathematical thinking.  All files are in PDF format and can be accessed using Adobe Reader® . For Kindergarten and 2nd Grade Geometry activities click on the links below.

1st Grade Geometry Activities

Reason with shapes and their attributes
1.G1 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:
Geoboard Squares
Comparing Polygons Template
My 3D Shapes Book
Comparing 3D Shapes Template
Shape Patterns
Read Aloud Task Cards:
When a Line Bends a Shape Begins
Mouse Shapes

Geometry Read Alouds
Geometry Read Alouds

1.G2 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:
Pattern Block Numbers
Pattern Block Triangles
Fold a Square
Cover a Hexagon
Tangram Squares
Tangram Triangles

Math Read Aloud Task Card:
Grandfather Tang's Story

Graadfather Tangf

1.G3 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 Activities:
Fraction Pictures
Make a Pizza

More 1st Grade Geometry Read Alouds

More 1st Grade Geometry Resources

1st Grade E-Books (click on a cover for more information)

1st Grade Math Journals
Counting rhymes
Math Projects K-2
K-2 Addition and Subtraction Strategies

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