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

2. 3.OA.1: Group Counting 3.OA.2: Divide Equal Groups
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

3. Divide Equal Groups

4. Divide Equal Groups
How many groups
are there?

5. Divide Equal Groups
How many groups
are there? 2

6. How many are in each group?
Divide Equal Groups
How many are in each group?

7. How many are in each group?
Divide Equal Groups
How many are in each group? 5

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

9. Divide Equal Groups
5 + 5 =

10. Divide Equal Groups
5 + 5 = 10

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

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

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

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

15. Divide Equal Groups
Division Sentence:

16. Divide Equal Groups
Division Sentence: 10

17. Divide Equal Groups
Division Sentence: 10

18. Divide Equal Groups
Division Sentence:

19. Divide Equal Groups
Division Sentence: =

20. Divide Equal Groups
Division Sentence:
= 5

21. 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)

22. 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)

23. Are there any other strategies to solve this problem?
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?

24. Agenda Fluency Application Problem NEW LEARNING Problem Set
Exit Ticket

25. Materials
Counters
Whiteboard
Whiteboard Marker

26. 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?

27. 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

28. 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.

29. 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.

30. 14 ÷ 7 = ___
size of groups

31. 14 ÷ 7 = ___
Draw an
array and a number bond

32. 14 ÷ 7 = ___
Draw an
array and a number bond 7 14

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

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

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

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

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

38. 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.

39. Solve using 2 or more strategies.
One More Problem 
Ms. Burch plans to buy 15 burgers.
Three burgers come in each pack.
How many packs should she buy?
Solve using 2 or more strategies.
Number Bond
Equal Shares Drawing
Equation

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

41. Remember Today’s Objective
We will understand the meaning of the unknown as the number of groups in division.

42. 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.

43. 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.
Solve using more than one strategy:

44. She needs to buy 5 packs of burgers.
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? 15 3
She needs to buy 5 packs of burgers.

46. Problem Set

47. Problem Set Debrief