Transcript 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/numbersandoperatio
ns/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
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
 http://mathforum.org/library/drmath/view/57182.htm
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