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Lesson Plan

Determine the number of one-degree turns in a circle by analyzing its characteristics

teaches Common Core State Standards CCSS.Math.Content.4.MD.C.5a http://corestandards.org/Math/Content/4/MD/C/5/a
teaches Common Core State Standards CCSS.Math.Practice.MP1 http://corestandards.org/Math/Practice/MP1
teaches Common Core State Standards CCSS.Math.Content.4.MD.C.5b http://corestandards.org/Math/Content/4/MD/C/5/b
teaches Common Core State Standards CCSS.Math.Practice.MP5 http://corestandards.org/Math/Practice/MP5
teaches Common Core State Standards CCSS.Math.Practice.MP6 http://corestandards.org/Math/Practice/MP6
teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7
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Big Ideas: Angles are measured by using a circle. Angle measurement is like measuring a turn. Circles are measured in units called degrees. There are 360 - 1 degree angles in a circle that all share the same endpoint in the center. This lesson builds on students' understanding of measurement and angles. Students are introduced to the concept that angles are measured by using a circle, and discover that when measuring angles, standard measurement is needed. This lesson introduces the idea that 1/360 of a turn in a circle is measured as one degree, and lays the foundation for angle measurement using a protractor. Vocabulary: degree, arc, wedge Special Materials: Circle Template, Ruler or Straight Edge
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