Prime Time

1
Prime Time

• Lesson 1.1
• Playing the Factor Game

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Materials

• Labsheet 1.1 (1 per pair)
• colored pens, pencils, or markers

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Vocabulary

• (whole number) factor
• (whole number) divisor
• proper factor

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Goals

• Become familiar with the factors of the numbers
  from 2 to 30
• Review multiplication and division of small
  whole numbers
• Begin to recognize the difference between prime
  numbers and composite numbers
• Relate dividing and finding factors of a number

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Launch

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Launch
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Launch
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Launch
As you play the game, think about these
questions Is it better to go first or second?
Why? What is the best first move? Why? How do
you know when the game is over? How do you know
when you have found all the factors of a number?
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Explore 20 Minutes

• A F on page 9

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Times Up!!!
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Summarize
What do you think is a good strategy for playing
the Factor Game?
Do you think their strategies are good ones?
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Assignment

• ACE
• pp. 14 18
• Problems 1 7 Connections 28 31 Extensions
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