A sieve is a kitchen utensil that is used to strain solids from liquids or for separating coarser from finer particles. The Sieve of Eratosthenes is similar because it’s used to separate out all the prime numbers from a given set of numbers.
Spark your math thinking!
1. Set up your math mini spark recording page: #5: Sieve of Eratosthenes
2. Listen to the pronunciation of Eratosthenes several times. Practice saying “Eratosthenes”
3. Learn about Prime Numbers at Math is Fun and then answer these question on your recording page. What is a prime number anyway? What is the smallest prime number? Is 1 prime? Why or Why not? Are all odd numbers prime? How many prime numbers are there between 1 and 100?
4. Watch this video about the Sieve of Eratosthenes.
5. Do this online prime number activity and Add a picture of the finished chart to your recording page. If you would rather use paper, print out this 100 chart and find the prime numbers.
6. Read this article and find out about Eratosthenes. Consider the following questions as you read and record your responses on your recording sheet.
What were 2 of Eratosthenes’ nicknames and what did they mean?
What is Eratosthenes known for besides the Sieve named after him?
What kind of man was Eratosthenes?
7. Share your math mini spark recording page with your teacher/EY coordinator.