Lesson Plan: Multiplying Binomials by Algebraic Expressions Mathematics

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to multiply polynomial expressions together by expanding the parentheses.


Students will be able to

  • multiply two binomial expressions together using expansion and simplify the result,
  • multiply a binomial expression by a trinomial expression using expansion and simplify the result,
  • multiply multiple polynomial expressions together (monomials, binomials, or trinomials) and simplify the result,
  • solve geometric problems involving the multiplication of polynomial expressions.


Students should already be familiar with

  • multiplying a polynomial by a monomial (e.g., 𝑥(2+𝑥)=𝑥+2𝑥),
  • simplifying expressions by combining like terms,
  • rules of exponents.


Students will not cover

  • multiplying polynomials by binomials (or higher polynomials),
  • factoring algebraic expressions,
  • negative and fractional exponents.

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