Teaching Divisibility Rules to elementary and middle school students is an imperative. It is not just a nice topic. It’s an essential component of number theory. And even though it is not explicitly included in common core standards, we will shortchange our students if we fail to teach it. The way I see it, divisibility rules are just as important as spelling rules. It increases students’ computation fluency that they will use all throughout university. The Sieves Method uses Divisibility Rules to find prime numbers. It’s a game like method in learning difference between prime and composite numbers.
Grades : 4-6
For the Lesson Plan go to: http://tinyurl.com/kjuyeu6