Teach your students to sort triangles as acute, right, or obtuse based on their internal angle type.

Can your first graders tell the difference between a square and a cube? How about a triangle and a cone? Use this geometry assessment to gauge your students’ abilities to use attributes to sort 2-D and 3-D shapes.

These dogs and cats just can't seem to figure out where to stand! They need some help sorting themselves out.

Build student understanding of the defining attributes of triangles with this sorting activity. Students will cut out different shape cards and sort them into examples and non-examples of triangles.

Angles, angles everywhere! Help students learn to recognize and count angles with this fun worksheet. By looking closely at the various shapes, students will gain practice classifying and sorting shapes based on how many angles they can identify.