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Title - Transformations Unit - Rotations
By - Cornelia Taran
Primary Subject - Math
Grade Level - 9-12
Lesson Plan 3: Rotations
Content:The students will identify and locate rotations.
Benchmarks:
- G3.1: Distance-preserving transformations - isometries
- METS 3.a.5: Students use online tutorial and discuss the benefits and disadvantages of this method of learning.
Learning Resources and Materials:
Development of Lesson:
Introduction:
Objectives:The students will identify and perform rotations.
Anticipatory Set:Show pictures that represent rotations.
Lesson:- A rotation is a transformation that turns a figure about a fixed point called the center of rotation. An object and its rotation are the same shape and size, but the figures may be turned in different directions
- The angle of rotation is 90o, the direction is counterclockwise and the point of rotation is P.
Methods/Procedures
- Draw a shape on translucent paper. Draw a point to serve as the center of rotation and draw the angle of the rotation.
- Place a second sheet on the top of the original. Trace the figure, the vertex of the angle of reflection and one ray of the angle.
- Place the second sheet under the original so everything is aligned. Place your pencil tip on the vertex of the angle. Turn Sheet 2 until the ray is aligned with other ray of the angle on Sheet 1.
- Trace the image onto the original sheet. Label the original figure and the rotated figure.
Accommodations/Adaptations:
Assessment/Evaluation: Formative - monitor and provide feedback.
Closure:
Find the image of a figure under a 180o rotation.
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