# prime and composite numbers

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Curipod generated lesson: "prime and composite numbers". #1-4

## igraft

Updated 5 months ago

1. Word cloud
120 seconds
Name one type of number?
2. Slide
60 seconds
Prime numbers are whole numbers that can only be divided evenly by 1 and itself. Composite numbers are whole numbers that can be divided evenly by more than 1 and itself. Examples of prime numbers are 2,3,5,7,11 and examples of composite numbers are 4,6,8,9,10.
Prime and Composite Numbers
3. Slide
60 seconds
The first known proof of the fundamental theorem of arithmetic was given by Euclid in his book Elements. The Prime Number Theorem was first proposed by Bernhard Riemann in 1859. There are an infinite number of prime numbers, but only a finite number of composite numbers.
Did you know?
4. Open question
300 seconds
What is the difference between a prime number and a composite number?
5. Open question
300 seconds
What are some real-life examples of prime and composite numbers?
6. Open question
300 seconds
How might understanding prime and composite numbers help you in the future?
7. Open question
300 seconds
What patterns can you find when looking at prime and composite numbers?
8. Drawings
450 seconds
Brain break: Draw three talking triangles having a conversation with hats and a bow tie.
9. Poll
60 seconds
What is a prime number?
• A number that ends with the digit 0
• A number that ends with the digit 5
• A number that can be divided by any other number
• A number that can only be divided by 1 and itself
10. Poll
60 seconds
Which of these numbers is a prime: 11, 12, or 13?
• 12
• 13
• 11
11. Poll
60 seconds
What is a composite number?
• A number that has more than two factors
• A number that has exactly two factors
12. Poll
60 seconds
Which of these numbers is composite: 7, 9, or 11?
• 7
• 9
• 11
13. Poll
60 seconds
Is '1' a prime or composite?
• Neither
• Prime
• Composite
14. Open question
180 seconds
Work together in pairs: Q: What is the difference between a prime number and a composite number?