Lesson Plan: Parallel, Perpendicular, and Intersecting Lines Mathematics • 4th Grade

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to identify and label parallel, perpendicular, and intersecting lines, rays, and line segments.


Students will be able to

  • identify whether a pair of lines, rays, or line segments are parallel, perpendicular, or intersecting,
  • use the notation for parallel () and perpendicular () lines.


Students should already be familiar with

  • how to define lines, rays, and line segments and represent them with mathematical symbols.


Students will not cover

  • drawing parallel, perpendicular, and intersecting lines.

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