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Prime and Composite Numbers. GLE 0406.2.3 Identify prime and composite numbers. Main Goal for Today:. Standard Addressed: GLE 0406.2.3 Identify prime and composite numbers. But…. What are Prime and Composite Numbers?. Identify Prime and Composite Numbers.

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Prime and Composite Numbers

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Prime and composite numbers l.jpg

Prime and Composite Numbers

GLE 0406.2.3 Identify prime and composite numbers.


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Main Goal for Today:

Standard Addressed:

GLE 0406.2.3 Identify prime and composite numbers.

But…. What are Prime and Composite Numbers?


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Identify Prime and Composite Numbers

  • Prime Numbers- A whole number greater than 1 that has exactly two factors, 1 and itself.

  • Composite Numbers- A whole number greater than 1 that has more than two factors.

    Look @ these Numbers Factors

  • 21, 2

  • 31, 3

  • 41, 2, 4

  • 51, 5

  • 61, 2, 3, 6


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Online Fun!!!!

  • Brain Pop

  • http://www.brainpop.com/math/numbersandoperations/primenumbers/quiz/


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Bring the number to life!

Items in use: Connecting cubes and white boards

Show me the ways one could arrange the connecting cubes (arrays) for the number 4 ? Then, write all the possible factors for this number on the whiteboards. Classify prime or composite. Why?

  • numbers 1-10


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Hundreds Chart

We are Greek Mathematicians and we are on the hunt for prime numbers!

Instructions:

  • put a triangle around the number that is neither prime nor composite,

  • circle the Prime Numbers

  • mark out the Composite Numbers 1-100.

  • *There are 25 prime number in total between 1-100.


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Where do you belong?

Card Sort

  • Composite vs. Prime

  • Why do you belong there?

  • Hand Transition Activity


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Fruit Shoot Virtual Manipulative

Math Games: Prime and Composite Numbers- Fruit Shoot


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Share your thinking while you work!

Tic Tac Toe Game…Lets take a look

  • Partners of 2 (neighbor)

  • Two sided (7-8 minutes a side)

  • Foam squares and dice

  • May use 100’s chart as guide

  • Review Instructions before start!


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Answer and you shall see prime and composite number are easy!

  • How are composite numbers and prime numbers different?

  • Give an example of an odd number that is composite?(whiteboards)

  • What is the only even prime number? (whiteboards)

  • Roger has 47 cars. Can he group them more than two ways?

  • Why is 1 neither prime nor composite?

  • What’s another way in math that we could use prime and composite numbers other that just identifying and classifying them.


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Think- Pair- Share

  • Kyle has 17 toy trucks. How many ways can the trucks be placed in equal groups?

  • 5 ways

  • 2 ways

  • 3 ways

  • Marla says that every number in the nineties is composite. Jackie says that one number in the nineties is prime. Who is correct? Explain.


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The end….

  • What was the main goal for today’s learning?

  • Students will be able to……


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What’s the one thing that stuck out to you the most?

  • Exit Ticket


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  • http://mathforum.org/library/drmath/view/57182.html


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