### Day 22 - Factoring (Prime Factorization and GCF) - 02.09.15

• New Seats!
• Unit 2 Test
• Average = 79%
• Go over test
• If you missed the test, it is in the testing center. It must be taken this week!
• See me today if you think this might be a problem!
• Go over Unit 3
• Timeframe
• Unit 3 Test next Friday, February 20th!

Bell Ringer

1. Which of the following are prime numbers?

1. 1

2. 2

3. 4

4. both a and b

5. none of the above

2. Which of the following are composite numbers?

1. 1

2. 2

3. 4

4. both a and b

5. none of the above

3. Which of the following are prime factors of 24?

1. 6 * 4

2. 2 * 12

3. 2 * 3 * 4

4. 2 * 2 * 2 * 3

5. none of the above

Review
• Prerequisites
• Prime Numbers
• Composite Numbers
• Factor

Lesson
• Factoring (video 1) (video 2)
• Prime Factorization
• Factored Form
• Greatest Common Factors

Exit Ticket
• Posted on board at the end of the block
Lesson Objective(s)
• How can integers and monomials be factored into their primes?
• How can the GCF of integers and monomials be found?
Skills
• Classifying Numbers as Prime or Composite
• Prime Factorization of a Positive Integer
• Prime Factorization of a Negative Integer
• Prime Factorization of a Monomial
• Finding the GCF of an Integer
• Finding the GCF of a Monomial
• Factor Applications

#### In-Class Help Requests

Standard(s)
• CC.9-12.A.SSE.1a Interpret parts of an expression, such as terms, factors, and coefficients.

Mathematical Practice(s)
• #1 - Make sense of problems and persevere in solving them
• #2 - Reason abstractly and quantitatively
• #7 - Look for and make use of structure

Past Checkpoints
• N/A