Corner (Angle) Recognizer

Sub Trajectory: parts

Recognizes angles as separate geometric objects, at least in the limited context of "corners." 



You may see this:

Linked Image to Sign In/Sign Up page

Other Examples:

  • When asked “Why is this a triangle?”, a child says, "It has three angles" and counts them, pointing clearly to each vertex (point at the corner).
  • When asked “How many angles, or corners, does this rectangle have?”, a child points to each and says “Four.”

Help your student become a(n) Corner (Angle) Recognizer

Activities and discussions challenge children to see corners (mathematical term: vertices) and angles (two sides with a common vertex) in shapes and be able to "abstract" them out of the shape. 

Feely Bag
Feely Bag
Quick Shapes: Angles
Quick Shapes: Angles

Special Thanks To

Institute of Education Sciences
The research reported here was supported by the Institute of Education Sciences, U.S. Department of Education, through grant numbers R305K050157, R305A120813, R305A110188, and R305A150243. to the University of Denver. The opinions expressed are those of the authors and do not represent views of the Institute or the U.S. Department of Education.