Lesson plan

Sums!: Trajectory of Understanding

teaches Common Core State Standards 2.OA.B.2 http://corestandards.org/Math/Content/2/OA/B/2
teaches Common Core State Standards MP2 http://corestandards.org/Math/Practice/MP2
teaches Common Core State Standards MP7 http://corestandards.org/Math/Practice/MP7
teaches Common Core State Standards MP8 http://corestandards.org/Math/Practice/MP8