Education Technology

Middle Grades Math: Multiplication and Division of Rational Numbers
by Texas Instruments

Updated on October 02, 2014

Objectives

  • Students will use an interactive area model to multiply and divide positive decimals and mixed numbers.
  • Students will use the distributive and commutative properties to multiply decimals and mixed numbers.
  • Students will use the idea of division as an inverse operation of multiplication to divide decimals and mixed numbers.

Vocabulary

  • factor
  • product
  • dividend
  • divisor
  • quotient
  • commutative property of multiplication
  • distributive property
  • inverse

About the Lesson

This lesson involves using an interactive area model to solve multiplication and division problems with positive decimals and mixed numbers.
As a result, students will:

  • Make connections between the geometric model and mathematical operations.
  • Record their steps and observations on their worksheets.
  • Randomly generate new numeric expressions.