This page provides samples of 3rd grade geometry activities suitable for use in math centers, small group, or whole class settings. All activities are designed to elicit a range of responses and provide opportunities for students to communicate their reasoning and mathematical thinking. Download the sample activites under each standard or purchase the 3rd Grade Math Centers eBook and have all the Number, Geometry, Measurement and Data Centers you’ll need for the entire school year in one convenient digital file.

Reason with shapes and their attributes 

3.G.1 Understand that shapes in different categories (e.g., rhombuses, rectangles, and others) may share attributes (e.g., having four sides), and that the shared attributes can define a larger category (e.g. quadrilaterals). Recognize rhombuses, rectangles, and squares as examples of quadrilaterals, and draw examples of quadrilaterals that do not belong to any of these subcategories.
Sample Activities:
Shape Match
Quadrilateral Riddle
Also included in 
3rd Grade Math Centers
Geoboard Squares
Comparing Quadrilaterals
Classify Shapes Using a Venn Diagram

3.G.2 Partition shapes into parts with equal areas. Express the area of each part as a unit fraction of the whole. For example, partition a shape into 4 parts with equal area, and describe the area of each part as 1/4 of the area of the shape.
Sample Activity:
Partition a Square (ver. 1)
Also included in 
3rd Grade Math Centers
Partition a Square (ver. 2)
Partition a Square (ver. 3)
Partition Shapes