Introduce Rotations

  1. Explain positive rotation and negative rotation.
  2. Introduce key terms: Center of a polygon, Rotation
  3. Have students practice rotating a triangle around a point using Sketchometry or Geometer’s Sketchpad. Both are tools for use with geometry.
  4. Have students practice rotating objects in a coordinate plane.
  5. Have students practice rotations using this unit from Curriki.
  6. Teams brainstorm three bullet points for a message that markets rotations to teens. 

Tips and Tools

Highlight Mathematical Practices 1, Use appropriate tools strategically, on the Mathematical Practices Rubric.

Provide examples of rotations.

See this unit on rotations for ideas on designing the next two lessons.

Have students complete Daily Learning Logs