Learning Goal: Introduce circles with an engaging task that leads to learning about central angles and properties of major and minor arcs.

Classwork

• Captain’s Wheel
• Practice
  • 2nd page inspired by Dan Meyer
  • Use these slides for 2nd page
• Go over Concept Quiz
  • Students complete analysis handout in order to prepare for retake. See retake policy and learning folders post for more details.

 Standards

• Common Core
  • HSG.C.A.2 – Identify and describe relationships among inscribed angles, radii, and chords. Include the relationship between central, inscribed, and circumscribed angles; inscribed angles on a diameter are right angles; the radius of a circle is perpendicular to the tangent where the radius intersects the circle.
• TEKS
  • G.12(A) – apply theorems about circles, including relationships among angles, radii, chords, tangents, and secants, to solve non-contextual problems
  • G.12(B) – Apply the proportional relationship between the measure of an arc length of a circle and the circumference of the circle to solve problems