Introduce Compositions of Isometries

  1. Introduce key terms.
    Isometry
    Glide reflection
  2. Have students view examples of isometries. This link takes you to Passy’s World of Mathematics where you will find examples of isometric drawings and 3D cubes.
  3. Teach students the concept of composition of reflection across parallel and intersecting lines.
  4. Teach students to recognize isometries by having them prepare a short lesson using ShowMe, an iPad app, or other tool then presenting to the class or other teammates. Go to this site for examples.

Tips and Tools

After students create their ShowMe lesson, critique by highlighting Mathematical Practice 6, Attend to precision, on the Mathematical Practices Rubric

Have students complete Daily Learning Logs.  

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