Lesson Plan:

Dicey Division

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Grade
Subject
Standards
August 27, 2015
by Molly Stahl

Learning Objectives

Students will be able to solve division problems with up to four-digit dividends and two-digit divisors using both the digit-by-digit method and the rectangle sections method.

Lesson

Introduction (3 minutes)

  • Ask students to name strategies for solving multiplication problems. Possible answers include arrays, lattices, and partial products.
  • Explain to students that just like there are different ways for solving multiplication problems, there are different methods to solve division problems too. Tell students that today they will be exploring two of these methods and by the end of the lesson you hope they find one that works best for them.

Explicit Instruction/Teacher Modeling (15 minutes)

  • Introduce both methods of solving division equations.
  • Label each method using the vocabulary cards.
  • Model solving example problems with 4-digit dividends and 2-digit divisors using the digit-by-digit method discussing each step as you go.
  • Model solving example problems with 4-digit dividends and 2-digit divisors using the rectangle sections method discussing each step as you go.

Guided Practice/Interactive Modeling (15 minutes)

  • Use the following division equations as practice on the board: 1452/11, 2499/19, 7482/22, 9387/68, 8482/14, and 6081/35.
  • Invite two students at a time to the board to solve the same problem using different methods.
  • Repeat as necessary.

Independent Working Time (20 minutes)

  • Distribute the Dicey Division worksheets.
  • Model rolling the dice and setting up an example problem on the board by using the digits rolled to fill in the boxes on the worksheets.
  • Have students work independently to solve problems using both methods.
  • Circulate around the room to assist students as needed.

Extend

Differentiation

  • Enrichment: Allow advanced students to create additional problems using the dice and their favorite strategy with up to 6-digit dividends and 3-digit divisors.
  • Support: Give struggling students Extra Practice #3 to review dividing 2 and 3-digit dividends by one-digit divisors or give them Extra Practice #9 to review dividing 2 and 3-digit dividends by one and two-digit divisors.

Related Books and/or Media

Review

Assessment (2 minutes)

  • Use the Dicey Division worksheets to assess students’ understanding of both methods of division.

Review and Closing (5 minutes)

  • Ask students to turn and talk to their partners, answering which division strategy they liked better and why.
  • Invite volunteers to share their responses with the class.

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