Serving advanced learners (and their teachers) since 2012.

Arizona Math Standard: 4.MD.C.5

Recognize angles as geometric shapes that are formed wherever two rays share a common endpoint, and understand concepts of angle measurement:

Intersecting Angles and Streets

Intersecting Angles and Streets

There can never be just one angle.

The Angles of a Triangle

The Angles of a Triangle

Why tell a kid the rules of a triangle when they can discover them!?