1. PowerPoint created by Parsheena Berch Resource : JBHM material Pictures: Google Images

2. Factors and Multiples

3. Bell Ringer: Page 39 in JBHM binder (DOK 2)

4. Focus/Introduction: Do you remember the “count-bys” (count by 2–2, 4, 6, 8…; count by 3–3, 6, 9, 12…; 4–4, 8, 12, 16…; 5–5, 10, 15, 20,…) from early elementary school. Who can demonstrate how to count by 6? There is actually a mathematical term to describe these. Does anyone know what the term is? Clue-it is similar to “multiply.” Multiple This lesson will explain more about multiples and their partners “factors.”

5. Guided Practice: (DOK 1) Divisibility rules can be used to determine factors for a number. It is important for you to learn these rules not only for this lesson, but for future mathematical learning.

6. What do all numbers have in common that are divisible by___? 2 3 4 5 6 9 10

7. We are in the binder notes on pages 88 through 89 on the divisibility rules.

8. Factors A factor of a number is one of two or more numbers that are multiplied together to get a product.

9. Examples: What are the factors of 8? 1 x 8 = 8 and 2 x 4 = 8 So 1, 2, 4, and 8 are the factors of 8.

10. Additional Examples: Find the factors of 50. 1 x 50 2 x 25 5 x 10 So, the factors of 50 are 1, 2, 5, 10, 25, and 50.

11. Find the factors of 100. 1 x 100 2 x 50 4 x 25 5 x 20 10 x 10 So, the factors of 100 are 1, 2, 4, 5, 10, 20, 25, 50, and 100.

12. Find the factors of 48. 1 x 48 2 x 24 3 x 16 4 x 12 6 x 8 So, the factors of 48 are 1, 2, 3, 4, 6, 8, 12, 16, 24, and 48.

13. Find the factors of 124. 1 x 124 2 x 62 4 x 31 So, the factors of 124 are 1, 2, 4, 31, 62, and 124.

14. Common Factors – numbers that are factors of two or more numbers

15. Examples: Factors of 4 are 1, 2, and 4. Factors of 8 are 1, 2, 4, and 8. Common Factors of 4 and 8 are 1, 2, and 4.

16. Additional Examples: What are the common factors of 50 and 100? (1, 2, 5, 10, 25, 50) Why are the common factors of 50 and 100 are the same as the factors of 50? What number is a common factor of every number? (1) We are now on the binder notes page 90.

17. Independent Work/Activity: (DOK 1) Find all factors and the greatest common factor of the following sets of numbers: 24 _______________________________________ 36 _______________________________________ GCF: ___ Prime Factors: _____________

18. 6 _____________________________________ 14 _____________________________________ GCF: ___ Prime Factors: ____________

19. 12 _____________________________________ 15 _____________________________________ GCF: ___ Prime Factors: ____________

20. 3 _____________________________________ 20 _____________________________________ GCF: ___ Prime Factors: ____________

21. 17 _____________________________________ 51 _____________________________________ GCF: ___ Prime Factors: ____________

22. 78 _____________________________________ 96 _____________________________________ GCF: ___ Prime Factors: ____________

23. Closure: Objective: NO.1c Identify factors and multiples of whole numbers. (DOK 1)

24. Homework: Find the factors and greatest common factor of the following: 6 and 24 15 and 20 4 and 34