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**Answer on a piece of paper and turn it in to the tray when finished.**

Puzzle Assessment Answer on a piece of paper and turn it in to the tray when finished.

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**Puzzle 13 & Puzzle 14 This number is less than 10**

This number is a factor of 70 This number is a factor of 42 This number is prime This number is a factor of 60 The sum of the digits in this number is 3 This number has 2 digits One factor of this number is 4

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**..and really long multiplication combinations!**

Prime Factorization ..and really long multiplication combinations!

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**Learning Goals What am I learning today? Why am I learning this?**

How to find all the prime factors of a number Identify multiplication combinations and finding factors Why am I learning this? To help me understand numbers and factors of numbers How do I know when I am being successful? I can break apart factors until I get to all prime numbers I know how to find the prime factors of a given number

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Guiding Question How do you know when you have found all the prime factors of a given number?

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**Reviewing what we have learned**

Factors of Factors of 180

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**Using a white board: write the longest multiplication combination you can for these numbers:**

120 180 210 Students share on Elmo

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Quick Check Why does the longest combination you can make involve only prime numbers? When you are trying to find the prime factors of a number, why does it not matter which multiplication combination you start with?

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Partner Work Work with your partner to find multiplication combinations with two, three, or more factors for one of these numbers: 1,200 1,800 2,100 Challenge: CAN YOU FIND THE PRIME FACTORIZATION FOR YOUR NUMBER?

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**Learning Goals What am I learning today? Why am I learning this?**

How to find all the prime factors of a number Identify multiplication combinations and finding factors Why am I learning this? To help me understand numbers and factors of numbers How do I know when I am being successful? I can break apart factors until I get to all prime numbers I know how to find the prime factors of a given number

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Guiding Question How do you know when you have found all the prime factors of a given number?

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