To define what makes a prime number students begin the lesson by calculating factors of several integers.  Prime numbers are then defined and listed.  To aid their recollection of the first 12 primes students are challenged to apply them within calculations.  As learning progresses students use the Sieve of Eratosthenes to calculate all the primes up to 100.

Differentiated Learning Objectives

• All students should be able to recall the first 12 prime numbers.
• Most students should be able to recall and apply the first 12 prime numbers.
• Some students should be able to use the Sieve of Eratosthenes to calculate all primes up to 100.

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Properties of Number

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