Lesson Plan: Cube Roots of Perfect Cubes Mathematics • 8th Grade

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to find cube roots of perfect cube integers.


Students will be able to

  • take the cube root of a perfect cube,
  • take the cube root of a negative perfect cube,
  • understand that
    • the cube root preserves signs,
    • the cube root of 𝑎=𝑎,
    • the cube root of 0=0,
  • find the dimensions of a cube given the volume by using cube roots.


Students should already be familiar with

  • finding square roots of rational numbers.


Students will not cover

  • taking the cube root of other rational numbers (such as 278 or 0.004),
  • solving equations involving cube roots.

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