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Day 1
Rigid Motion and Tessellations
Objectives:
Students will be able to identify a reflections, rotations, and translations
Students will be able to define rigid motion Students will be able to define isometry
Students will be able to identify and create tessellations
Materials:
Dot paper for tessellations
Worksheet about tessellations
Activities: (45 Minute class)
Teacher defines terms and definitions with examples (15 Min)
Preimage: original figure (Show example of square
Image: new figure (Show continuation of example)
Preimage Image
Transformation: Operation the moves a preimage onto its image (Relate to example)
--->
Preimage Image
Rigid: when a transformation maps every figure onto a congruent figure
--->
--->
Rigid
Not Rigid
Isometry: A transformation in the plane is an isometry if it preserves length (A rigid transformation is called an isometry)
3 Types of Transformations:
Reflections: Show example and explain
Rotations: Show example and explain
Translations: Show example and explain
--->
Practice as a class (15 Min)
p. 328 (1-16)
Tessellations (10 Min)
Show examples from textbook pp. 694,291,292
Go over hand out about creating the shape on dot paper
Students work on outside class and have the weekend to complete
Grading Rubric
Must cover entire sheet of paper
Must use color
Be as creative as possible (More credit for more elaborate)
Example of tessellation
Closing (5 Min)
Hand out dot paper
Students work on shapes for remaining class period
Assessment:
Informal Listen to answers and questions during oral practice
Listen to questions during lecture on definition
Formal
Grade Tessellations
Qu-est at the end of the chapter (Quiz/Test)
Example of a Tessellation