Trigonometric Concepts Unit

Two students, Mary and Claire, investigate angle measure and the sine function. They begin by investigating how to measure angles in a variety of ways. They explore how to measure these angles in degrees, non-standard units, and radians. Next, they investigate the sine function. They explore how the function relates two quantities as they co-vary, and how to graph the function. Finally, they investigate how to manipulate the graph of the sine function to model climate data.

Lesson 1: Measuring Angle Openness

Mary and Claire explore what it means for one angle to be more open than another. They also investigate how to measure that openness using both degrees and non-standard units.

Lesson 2: Making Sense of Angles as Rotations

Mary and Claire explore how to create and measure angles that represent the amount an object has rotated. They measure the angles using both degrees and a non-standard unit of measure. They then reflect on what those measurements mean in terms of the rotation.

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