Lesson plan

2. Describe transformations in the coordinate plane (FP)

teaches Common Core State Standards CCSS.Math.Content.8.G.A.2 http://corestandards.org/Math/Content/8/G/A/2
teaches Common Core State Standards CCSS.Math.Practice.MP3 http://corestandards.org/Math/Practice/MP3
teaches Common Core State Standards CCSS.Math.Practice.MP6 http://corestandards.org/Math/Practice/MP6
teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7
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Lesson objective: Fluently describe transformations in the coordinate plane.

This lesson helps to build fluency with description of transformations in the coordinate plane. Charts are used here because they clearly separate different denotations for writing the descriptions. This work develops students' understanding that the structure of the coordinate plane allows us to describe geometric transformations using coordinates..

Students engage in Mathematical Practice 6 (attend to precision) as they provide details of transformations that have occurred with respect to the coordinate plane. The beginning of the lesson reminds students of what information must be included in a description, and the task directs students to describe transformations from diagrams.

Key vocabulary:

  • center of rotation
  • line of reflection
  • reflection
  • rotation
  • translation

Special materials needed:

  • patty paper (optional)
  • transparency and wet- or dry-erase marker (optional alternative to patty paper)