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Title - Transformations Unit - Translations
By - Cornelia Taran
Primary Subject - Math
Grade Level - 9-12
Lesson Plan 1: Translations
Content:
The students will identify and locate translations.
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:
- Transformation tool
- Navigation through Geometry, NCTM
- Translucent paper
- Pictures with translations
Development of Lesson:
Introduction:
Objectives:The students will identify and locate translations.
Anticipatory Set:Show pictures that represent translations.
Lesson:
- A translation "slides" an object a fixed distance
in a given direction. The original object and its translation have the
same shape and size, and they face in the same direction.
- The word "translate" in Latin means, "carried across".
- Use translucent paper to create translations.
Methods/Procedures:
- Draw a vector on one sheet of translucent paper.
- Draw an original shape on the sheet of paper.
- Place a second paper over the first sheet. On sheet 2, trace the endpoint of the arrow and draw a line that extends beyond the endpoint and head of the original arrow. Without moving sheet 2, trace the original figure.
- Place the second sheet under the original. Align the line on the second sheet and the vector on the first. Slide sheet 2 until the point you drew on the line is under the tip of the arrow.
- Trace the image from sheet 2 onto sheet 1. Label the original figure and the translated figure.
Explain translations in the coordinate plane
Accommodations/Adaptations:
Assessment/Evaluation: Formative - monitor and provide feedback.
Closure:Draw a triangle in the coordinate plane and translate it (6,-4)
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