ALEX Facebook
ALEX Twitter
Home
Resources
Courses of Study
Search All COS
English Language Arts
Science
Mathematics
Social Studies
Arts Education
Foreign Languages
Career Tech
Physical Education
Driver Safety
Technology Education
Health Education
Other Courses of Study
Learning Activities
Lesson/Unit Plans
Multimedia
Alabama Insight
Search
Learn More
Contact ALEX
GEMS-U
Log In
Register for NEW Account
Reset Password
ALEX Lesson Plan Resources
Back
ALEX Lesson Plans
Subject:
Mathematics (9 - 12)
Title:
Unit Circle - Special Angles - Just Know One
Description:
This lesson will demonstrate that in order to find the coordinates of the special angles on the unit circle, students will need a knowledge of the first quadrant angles only. Students will use special right triangle relationships for 30° - 60° -90° or 45° - 45° - 90° triangles to find the first quadrant coordinate values. These values will then be reflected across the x- and y-axis to locate the coordinates in the remaining quadrants. Students will also convert the angle measurements from units in degrees to units in radians. They will become familiar with finding angles in the quadrants by using reference angles (π-x, π+x. 2π-x). This lesson results from the ALEX Resource Gap Project.
Thinkfinity Lesson Plans