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Activity 1

15 mins

Number Talk: Design 1

Standards Alignment

Building On

Addressing

Building Toward

Instructional Routines

Number Talk

to see where instructional routines fit in your journey.

Materials

None

Activity Narrative

The purpose of this activity is for students to reason about strategies for finding whole-number quotients of whole numbers with up to four-digit dividends and two-digit divisors. Students add one expression to a partially-completed Number Talk activity. If there is time, students can facilitate their Number Talk with another group.

Engagement: Provide Access by Recruiting Interest. Synthesis: Optimize meaning and value. Invite students to share how they chose the last expression to complete the Number Talk with their favorite math teacher.
Supports accessibility for: Conceptual Processing, Language

Launch

Groups of 2 or 4
“Now you will work with your group to complete a Number Talk activity. This activity has one expression missing. Decide on an expression that would complete the Number Talk and write it on the blank line.”

Activity

10 minutes: small-group work time
As students work, monitor for groups that discuss and design an expression based on some of the following:
- They keep the same divisor.
- They add the dividends, but keep the same divisor.
- They subtract the dividends and keep the same divisor.
- They make the dividend smaller to get or .
- They use a combination of multiples, half, double, or triple the dividend and divisor to change both the dividend and divisor. For example, .

Activity Synthesis

Choose groups to share that had different reasons for their fourth expression.
Ask groups to share their completed Number Talk and ask the class to share reasons for the last expression.
As each group shares, continually ask others in the class if they agree or disagree and the reasons why.

Activity 2

15 mins

Number Talk: Design 2

Standards Alignment

Building On

Addressing

Building Toward

Instructional Routines

Number Talk

to see where instructional routines fit in your journey.

Materials

None

Activity Narrative

The purpose of this activity is for students to reason about strategies for finding whole-number quotients of whole numbers with up to four-digit dividends and two-digit divisors. Students add two expressions to a partially-completed Number Talk activity. If there is time, students can facilitate their Number Talk with another group.

Launch

Groups of 2 or 4
“Now you will work with your group to complete a Number Talk activity. This activity has two options that each have two expressions missing. Decide on expressions that would complete one of the Number Talk activities and write those expressions in the blank lines.”

Activity

10 minutes: small-group work time
As students work, monitor for groups that discuss and design expressions based on some of the following:
- They adjust the dividend but keep the divisor.
- They adjust the divisor and keep the dividend.
- They use partial quotients, either through addition or subtraction.
- They use multiplicative relationships, such as halving and doubling, and reason how that impacts the quotient.
- They use multiplicative relationships, such as multiplying by 2 or 10 and dividing by 2 or 10, and reason how that impacts the quotient.

Student Task Statement

Choose one of the Number Talk activities to complete. Be prepared to share your reasoning for the expressions you chose.

Option 1:

Find the value of each expression mentally.

________________
________________

Option 2:

Find the value of each expression mentally.

________________
________________

Activity Synthesis

Choose groups to share that had different reasons for their expressions.
Ask groups to share their completed Number Talks and ask the class to share reasons for their expressions.
As each group shares, continually ask others in the class if they agree or disagree and the reasons why.

Activity 3

15 mins

Number Talk: Design 3

Standards Alignment

Building On

Addressing

Building Toward

Instructional Routines

Number Talk

to see where instructional routines fit in your journey.

Materials

None

Activity Narrative

The purpose of this activity is for students to reason about strategies for finding whole-number quotients of whole numbers with up to four-digit dividends and two-digit divisors. Students add three expressions to a partially-completed Number Talk activity. If there is time, students can facilitate their Number Talk with another group.

Launch

Groups of 2 or 4
“Now you will work with your group to complete a Number Talk activity. This activity has three expressions missing. Decide on expressions that would complete the Number Talk and write them in the blank lines.”

Activity

10 minutes: small-group work time
As students work, monitor for groups that discuss and design expressions based on some of the following:
- They adjust the dividend but keep the divisor.
- They adjust the divisor and keep the dividend.
- They use partial quotients, either through addition or subtraction.
- They use multiplicative relationships, such as multiplying by 2 or 10 and dividing by 2 or 10, and reason how that impacts the quotient.

Student Task Statement

Write expressions to complete the Number Talk. Be prepared to share your reasoning for the expressions.

Find the value of each expression mentally.

__________
__________
__________

Activity Synthesis

Choose groups to share that had different reasons for their expressions.
Ask groups to share their completed Number Talk and ask the class to share reasons for their expressions.
As each group shares, continually ask others in the class if they agree or disagree and the reasons why.

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Lesson 16

Number Talk

Warm-up

Number Talk: Division

Instructional Routines

Materials

Activity Narrative

Launch

Activity

Student Task Statement

Student Response

Advancing Student Thinking

Are You Ready for More?

Activity Synthesis

Activity 1

Number Talk: Design 1

Standards Alignment

5.NBT.B.6

Instructional Routines

Materials

Activity Narrative

Launch

Activity

Activity Synthesis

Activity 2

Number Talk: Design 2

Standards Alignment

5.NBT.B.6

Instructional Routines

Materials

Activity Narrative

Launch

Activity

Student Task Statement

Activity Synthesis

Activity 3

Number Talk: Design 3

Standards Alignment

5.NBT.B.6

Instructional Routines

Materials

Activity Narrative

Launch

Activity

Student Task Statement

Activity Synthesis

Lesson Synthesis

Have a correction or suggestion?

Standards Alignment

5.NBT.B.6

Student Task Statement

Student Response

Advancing Student Thinking

Are You Ready for More?

Student Response

Advancing Student Thinking

Are You Ready for More?

Student Response

Advancing Student Thinking

Are You Ready for More?