# Standards and Sources

## The standards that apply to this lesson are:

*Standards CCSSM/Maryland College and Career Ready Standards***Previous standards that provided prior knowledge:**CCSS.MATH.CONTENT.7.G.B.4 Know the formulas for the area and circumference of a circle and use them to solve problems; give an informal derivation of the relationship between the circumference and area of a circle.

**Current standard being addressed:**CCSS.MATH.CONTENT.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.

**Standard to be addressed in the next lesson:**

*CCSS.MATH.CONTENT.HSG.C.A.3*Construct the inscribed and circumscribed circles of a triangle, and prove properties of angles for a quadrilateral inscribed in a circle

**Model with mathematics. Use appropriate tools strategically. Look for and make use of structure.**

*Standards for Mathematical Practice***Integrate Science, Technology, Engineering and Mathematics Content Interpret and Communicate Information from Science, Technology, Engineering, and Mathematics**

*STEM Standards of Practice***Fetter, A. (2015, October).**

*Research Considerations**Sense Making? Aren’t We Already Doing That In Literacy?*Presented at the meeting of the National Council of Teachers of Mathematics, Atlantic City, NJ. Perry, D. R., & Steck, A. K. (2015). Increasing Student Engagement, Self-Efficacy, and Meta-Cognitive Self-Regulation in the High School Geometry Classroom: Do iPads Help?

*Computers in the Schools,*

*32*(2), 122-143. http://dx.doi.org/10.1080/07380569.2015.1036650 Pictures and Videos: https://www.reference.com/math/circles-used-real-life-5a9cee1968769425 http://www.tolkienshop.com/contents/en-uk/d131.html http://time.com/4834213/spiderman-movie-ranking/ https://mymajicdc.com/3649232/nestle-recalls-drumstick-ice-cream-cones/ https://fractad.wordpress.com/tag/harpeth-hall/ https://www.youtube.com/watch?v=4R2aW03pwL0

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