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Learning Goal
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Understand radian measure
Start lessonBegins with Understand radian measure · Slides
Teacher tools for this standard
Lesson Plan · Guided Notes · Exit Ticket · Re-teach · Homework
Teacher tools for this standard
Lesson Plan · Guided Notes · Exit Ticket · Re-teach · Homework
- Lesson Plan →Objectives, pacing and practice, built from this lesson's brief.
- Guided Notes →One page your students fill in and keep.
- Exit Ticket →Three items at the end of class. No student accounts.
- Re-teach →After an exit ticket: who missed what, and what to do tomorrow.
- Homework →Assign practice; it grades itself.
HSF.TF.A.1
**HSF.TF.A.1**: Understand radian measure of an angle as the length of the arc on the unit circle subtended by the angle.
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HSF.TF.A.1: Understand radian measure of an angle as the length of the arc on the unit circle subtended by the angle.
What you'll learn
- Define a radian as the measure of an angle whose arc length on the unit circle equals the radius
- Explain why a full rotation equals 2pi radians by relating circumference to radius
- Convert between degree and radian measures using the relationship 180 degrees = pi radians
- Identify radian measures of key angles: pi/6, pi/4, pi/3, pi/2, pi, and 2pi
- Justify why radians are a natural unit of angle measure for mathematics
- Label angles in standard position on the unit circle using radian measure
Slides
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Understand radian measure
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