Lesson 5

Break-Apart Products

Est. Class Sessions: 2

Summarizing the Lesson

Direct students to the Break-Apart Products pages in the Student Guide. These pages provide an opportunity to review the content of the lesson. Read and discuss the questions as a class or ask students to discuss the questions in pairs before discussing their strategies with the class.

If students have trouble sketching a rectangle for Question 5, provide them with copies of the Square-Inch Grid Paper Master.

X

Use students' discussion of Questions 1–5 in the Student Guide to check students' understanding of break-apart products. Note students' progress on the Expectation below:

E9.
Break products into the sum of simpler products to solve multiplication problems (applying the distributive property of multiplication over addition).

Observe the following:

  • Can students make connections between rectangles and number sentences that represent break-apart products? (Questions 1 and 4)
  • Can students break products into the sum of simpler products and represent them with rectangles? (Questions 2 and 5)

    • The Workshop in Lesson 6 provides targeted practice.

Ask students to complete the Factors, Multiples, and Primes Assessment Master in the Teacher Guide.

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Use the Factors, Multiples, and Primes Assessment Master with Feedback Box to assess students' abilities to use rectangular arrays to represent and solve multiplication and division problems [E1]; determine the multiples of a number [E2]; find the factors of a number [E3]; identify prime numbers [E4]; and break products into the sum of simpler products [E9].

The Workshop in Lesson 6 provides targeted practice.

Student Guide:
Student Activity Book:
Master: