Lesson plan

Discover angle measurement by using circles

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teaches Common Core State Standards 4.MD.C.5 http://corestandards.org/Math/Content/4/MD/C/5
teaches Common Core State Standards 4.MD.C.5.a http://corestandards.org/Math/Content/4/MD/C/5/a
teaches Common Core State Standards MP3 http://corestandards.org/Math/Practice/MP3
teaches Common Core State Standards MP6 http://corestandards.org/Math/Practice/MP6
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Big Ideas: Angles are measured with reference to a circle. Angles are measured in units called degrees. A full circle has 360 degrees. A half circle has 180 degrees This lesson will build on students' knowledge of right, acute, obtuse and straight angles to introduce the concept of angle measurement using a circle. Students will explore the idea that angles are measured in degrees, that a full circle is comprised of 360 degrees, and a half circle is 180 degrees. Vocabulary: degree, circle, turn