This is aligned with the following California State Standards:
Recognize same as the object that shares all of the same attributes as other objects in a group. Recognize different as the object that shares some or none of the attributes as other objects in a group.
Recognize two-dimensional shapes such as square, circle, triangle, or rectangle or three-dimensional shapes such as cube, cone, cylinder, or sphere.
Communicate attribute values of a shape, such as number of sides or number of corners (e.g., a square has four sides).
Recognize shapes with specified attributes (e.g., number of sides, number of vertices).
Group together shapes with specified attributes (e.g., number of sides, number of vertices).