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## Prime and Composite Numbers

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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**• 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 • 2 1, 2 • 3 1, 3 • 4 1, 2, 4 • 5 1, 5 • 6 1, 2, 3, 6**Online Fun!!!!**• Brain Pop • http://www.brainpop.com/math/numbersandoperations/primenumbers/quiz/**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**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.**Where do you belong?**Card Sort • Composite vs. Prime • Why do you belong there? • Hand Transition Activity**Fruit Shoot Virtual Manipulative**Math Games: Prime and Composite Numbers- Fruit Shoot**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!**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.**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.**The end….**• What was the main goal for today’s learning? • Students will be able to……**What’s the one thing that stuck out to you the most?**• Exit Ticket