ACT Math

Lesson Plan

Degree-radian conversion

Goals / Objectives

Convert between degree and radian measure in exact form, in either direction, including measures such as 75 degrees that do not reduce to a landmark angle and radian measures given without pi such as 2 radians

Define one radian as the central angle that subtends an arc equal in length to the radius, explain why the measure carries no unit symbol, and derive pi radians = 180 degrees from the circumference

State the radian measures of 30, 45, 60, 90, 180 and 360 degrees on sight, and reconstruct any forgotten entry from the fits-into-180 pattern

Identify an angle's unit from its notation, and evaluate trig functions in that unit

Standards

F 704. Exhibit knowledge of unit circle trigonometry G 701. Use relationships among angles, arcs, and distances in a circle F 705. Match graphs of basic trigonometric functions with their equations

Academic Vocabulary

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Materials

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Enrichment

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Accommodations

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Anticipatory Set / Bell Work

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Check for Understanding

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Guided Practice

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Independent Practice

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Pacing

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