Lesson plan

7. Understand angles are composed of 1º angles (C)

teaches Common Core State Standards 4.G.A.1 http://corestandards.org/Math/Content/4/G/A/1
teaches Common Core State Standards 4.MD.C.5.b http://corestandards.org/Math/Content/4/MD/C/5/b
teaches Common Core State Standards MP3 http://corestandards.org/Math/Practice/MP3