1. Do Now Imagine that you wanted to have hot dogs at a party. Hot dogs come in packages of 5 but hot dog buns come in packages of 8. You don’t want to waste hot dogs or hot dog buns. So you need the same amount of hot dogs and hot dog buns. Imagine that you wanted to have hot dogs at a party. Hot dogs come in packages of 5 but hot dog buns come in packages of 8. You don’t want to waste hot dogs or hot dog buns. So you need the same amount of hot dogs and hot dog buns. 1. How could you figure out how many packages of each to buy? 2. What is the smallest amount of packages you could buy? How do you know? Homework: Homework:

2. Least Common Multiple

3. Standard/Objective 6.N.16 Add and subtract fractions with unlike denominators 6.N.16 Add and subtract fractions with unlike denominators Objective: Objective: SWBAT find the multiples of a number. SWBAT find the multiples of a number. SWBAT find the LCM. SWBAT find the LCM.

4. Flow of the Day Do Now 5 min Do Now 5 min Multiple practice 10 min Multiple practice 10 min Common multiple practice 15 min Common multiple practice 15 min Independent practice 10 min Independent practice 10 min Exit Slip Exit Slip Journal 10 min Journal 10 min

5. Review: Product The answer to a multiplication problem. The answer to a multiplication problem. 6 X 6 = 36

6. What is the product? 7 X 8 = 56

7. Multiple The product of a whole number multiplied times any other whole number. The product of a whole number multiplied times any other whole number. Some multiples of 6 6, 12, 18, 24, 30, 36, 42

8. Name some multiples of 5 5, 10, 15, 20, 25, 30, 35

9. Name some multiples of 7 7, 14, 21, 28, 35, 42, 49

10. Name some multiples of 4 4, 8, 12, 16, 20, 24, 28

11. Name some multiples of 9 9, 18, 27, 36, 45, 54, 63

12. Common Multiple A number that is a multiple of two or more numbers. A number that is a multiple of two or more numbers.

13. What are some Common Multiples for 4 & 6? 4, 8, 12, 16, 20, 24, 28, 32, 36, 40 6, 12, 18, 24, 30, 36, 42, 48, 54, 60 Some multiples of 4 Some multiples of 6

14. What are some Common Multiples for 4 & 5? 4, 8, 12, 16, 20, 24, 28, 32, 36, 40 5, 10, 15, 20, 25, 30, 35, 40, 45, 50 Some multiples of 4 Some multiples of 6

15. What are the first 5 Common Multiples for 2 & 8? 8, 16, 24, 32, 40

16. What are the first 3 Common Multiples for 3 & 7? 21, 42, 63

17. What are the first 3 Common Multiples for 8 & 12? 24, 48, 72

18. Least Common Multiple The smallest common multiple of a set of two or more numbers. The smallest common multiple of a set of two or more numbers. 6 = 6, 12, 18, 24, 30, 36 5 = 5, 10, 15, 20, 25, 30

19. What is the Least Common Multiple of 4 & 8 8 = 8, 16, 24, 32, 40, 48 4 = 4, 8, 12, 16, 20, 24

20. What is the Least Common Multiple of 6 & 8 8 = 8, 16, 24, 32, 40, 48 6 = 6, 12, 18, 24, 30, 36, 42, 48

21. What is the Least Common Multiple of 3 & 9 9 = 9, 18, 27, 36, 45, 54 3 = 3, 6, 9, 12, 15, 21,

22. Individual work You will take turns using blocks to determine LCM. You will take turns using blocks to determine LCM. When it is not your turn to use blocks, you will work on a separate sheet of paper. When it is not your turn to use blocks, you will work on a separate sheet of paper.

23. Independent work Expectations: raise quiet hand to get out of seat, work silently on assignment Find the least common multiples of: 7 & 8 7 & 8 3 & 5 3 & 5 6 & 3 6 & 3 4 & 17 4 & 17 13 & 6 13 & 6 2 & 3 2 & 3

24. Exit Slip 1. Name 3 multiples of 6. 2. Name common multiples of 4 and 3. 3. What is the least common multiple of 5 & 10? 4. What is the least common multiple of 7 and 3?

25. Journal What did you learn today? How would you explain it to a third grader? What did you learn today? How would you explain it to a third grader? Write at least 1 paragraph (4-6 sentences). Write at least 1 paragraph (4-6 sentences).

26. http://www.mesacc.edu/dept/d25/mat082/fractions/l cm/Cuisenaire_Rod_Class_Activity.pdf http://www.mesacc.edu/dept/d25/mat082/fractions/l cm/Cuisenaire_Rod_Class_Activity.pdf http://www.mesacc.edu/dept/d25/mat082/fractions/l cm/Cuisenaire_Rod_Class_Activity.pdf http://www.mesacc.edu/dept/d25/mat082/fractions/l cm/Cuisenaire_Rod_Class_Activity.pdf http://numberwarrior.wordpress.com/2009/04/22/hot -dogs-and-buns-least-common-multiple/ http://numberwarrior.wordpress.com/2009/04/22/hot -dogs-and-buns-least-common-multiple/ http://numberwarrior.wordpress.com/2009/04/22/hot -dogs-and-buns-least-common-multiple/ http://numberwarrior.wordpress.com/2009/04/22/hot -dogs-and-buns-least-common-multiple/ http://www.wisc- online.com/objects/ViewObject.aspx?ID=ABM4902 http://www.wisc- online.com/objects/ViewObject.aspx?ID=ABM4902 http://www.wisc- online.com/objects/ViewObject.aspx?ID=ABM4902 http://www.wisc- online.com/objects/ViewObject.aspx?ID=ABM4902 http://www.boostconference.org/PDF/2011_worksho ps/Using%20Hands- On%20Activities,%20Games,%20and%20Literacy%2 0Connections%20to%20Reach%20Diverse%20Stude nt%20Needs%20-%20final.pdf http://www.boostconference.org/PDF/2011_worksho ps/Using%20Hands- On%20Activities,%20Games,%20and%20Literacy%2 0Connections%20to%20Reach%20Diverse%20Stude nt%20Needs%20-%20final.pdf http://www.boostconference.org/PDF/2011_worksho ps/Using%20Hands- On%20Activities,%20Games,%20and%20Literacy%2 0Connections%20to%20Reach%20Diverse%20Stude nt%20Needs%20-%20final.pdf http://www.boostconference.org/PDF/2011_worksho ps/Using%20Hands- On%20Activities,%20Games,%20and%20Literacy%2 0Connections%20to%20Reach%20Diverse%20Stude nt%20Needs%20-%20final.pdf