Lesson 1.1: Playing the Factor Game

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Presentation transcript:

Lesson 1.1: Playing the Factor Game Prime Time Lesson 1.1: Playing the Factor Game

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

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

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

Launch

Launch

Launch

Launch

Launch

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?

Explore – 20 Minutes A – F on page 9 40 Min. 30 Min. 20 Min. 10 Min. Check the Teacher Guide for questions to ask as you walk around. Try not to tell the students how to do the exploration, instead guide the students’ thinking by strategic questioning. 40 Min. 30 Min. 20 Min. 10 Min.

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Time’s Up!!!

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

Assignment ACE pp. 14 – 18 Problems 1 – 7; Connections 28 – 31; Extensions 39 Suggested Assignment in beginning of Teacher Guide for each Investigation.