Grade 3 Module 1 Lesson 5 Module 1

Grade 3 Module 1: Lesson 5 Module 1, Lesson 5 Engage NY Eureka Math

Today’s Learning Objective: We will understand the meaning of the unknown as the number of groups in division. 3. OA. 1: Group Counting 3. OA. 2: Divide Equal Groups

Divide Equal Groups

Divide Equal Groups How many groups are there?

Divide Equal Groups How many groups are there? 2

Divide Equal Groups How many are in each group?

Divide Equal Groups How many are in each group? 5

Divide Equal Groups Tell me the total as I say the repeated addition sentence.

Divide Equal Groups 5+5=

Divide Equal Groups 5 + 5 = 10

Divide Equal Groups 5 + 5 = 10 2 rows of __

Divide Equal Groups 5 + 5 = 10 2 rows of 5

Divide Equal Groups 5 + 5 = 10 2 rows of 5

Divide Equal Groups 5 + 5 = 10 2 x 5 = 10

Divide Equal Groups Division Sentence:

Divide Equal Groups Division Sentence: 10

Divide Equal Groups Division Sentence: 10

Divide Equal Groups Division Sentence: 10 2

Divide Equal Groups Division Sentence: 10 2 =

Divide Equal Groups Division Sentence: 10 2 = 5

Application Problem Ms. Cordova has 18 bracelets. After she sorts them by color, she has 3 equal groups. How many bracelets are in each group? (Read, Draw, Write)

Application Problem Ms. Cordova has 18 bracelets. After she sorts them by color, she has 3 equal groups. How many bracelets are in each group? (Read, Draw, Write)

Application Problem Ms. Cordova has 18 bracelets. After she sorts them by color, she has 3 equal groups. How many bracelets are in each group? (Read, Draw, Write) Are there any other strategies to solve this problem?

Agenda Fluency Application Problem NEW LEARNING Problem Set Exit Ticket

Materials Counters Whiteboard Marker

Fair Share with Division This weekend, my friend Candice is having a party. 18 people are coming. I told her I’d help her set up tables. We know that 6 people can sit at each table, but we’re not sure how many tables we’ll need. Partner Talk: -What info did they give us? -What do we still need?

Fair Share with Division This weekend, my friend Candice is having a party. 18 people are coming. I told her I’d help her set up tables. We know that 6 people can sit at each table, but we’re not sure how many tables we’ll need. 18 ÷ 6 = ___ Use your counters to show me your thinking

Fair Share with Division This weekend, my friend Candice is having a party. 18 people are coming. I told her I’d help her set up tables. We know that 6 people can sit at each table, but we’re not sure how many tables we’ll need. 18 ÷ 6 = 3 Candice needs 3 tables to fit everyone.

Fair Share with Division Compare how you solved this problem to the application problem from earlier. Notice the number sentences too. You should have noticed that the unknown was different in each problem. We divide when we want to find the size of the groups or the number of groups.

14 ÷ 7 = ___ size of groups

14 ÷ 7 = ___ Draw an array and a number bond

14 ÷ 7 = ___ Draw an array and a number bond 7 14

14 ÷ 7 = ___ Challenge Can you show 2 ways to solve this problem?

14 ÷ 7 = ___ Challenge Can you show 2 ways to solve this problem? What property did you use?

14 ÷ 7 = ___ Challenge Can you show 2 ways to solve this problem? The Commutative Property

One More Problem Ms. Burch plans to buy 15 burgers. Three burgers come in each pack. How many packs should she buy?

One More Problem Ms. Burch plans to buy 15 burgers. Three burgers come in each pack. How many packs should she buy?

One More Problem Ms. Burch plans to buy 15 burgers. Three burgers come in each pack. How many packs should she buy? Whisper to your partner what the numbers 15 and 3 represent in this problem.

One More Problem Ms. Burch plans to buy 15 burgers. Three burgers come in each pack. How many packs should she buy? Solve using more than 1 strategy. Number Bond Equal Shares Drawing Equation

One More Problem Ms. Burch plans to buy 15 burgers. Three burgers come in each pack. How many packs should she buy? Whisper to your partner what the numbers 15 and 3 represent in this problem. 15 ÷ 3 = how many groups? She needs to buy 5 packs of burgers. 15 3 3 3

Problem Set

Problem Set Debrief