Lesson Plan: Square Roots of Perfect Squares Mathematics • 8th Grade

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


Students will be able to

  • understand that taking the square root of a number is the inverse operation of squaring that number,
  • understand that the square root symbol denotes the positive square root of a number,
  • find the square root of a perfect square,
  • find the square root of a fraction where the numerator and denominator are perfect squares,
  • Find the square root of a decimal number that can be written as a fraction with a numerator that is a perfect square and a denominator that is a multiple of 100, and give your answer as a decimal,
  • find the square root of squared algebraic terms,
  • find lengths by taking the square root of perfect squares,
  • solve word problems by taking the square root.


Students should already be familiar with

  • powers and exponents,
  • perfect squares.


Students will not cover

  • square roots of non-perfect squares,
  • fractional powers of numbers,
  • solving equations by taking the square root.

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